Commit Graph

639 Commits

Author SHA1 Message Date
Eric Fiselier 2d4fbb7b0c Mark thread exit test as unsupported w/o threads
llvm-svn: 285523
2016-10-30 20:05:52 +00:00
Eric Fiselier f6c4ab901b Get libc++abi building with LLVM_ENABLE_MODULES
llvm-svn: 285107
2016-10-25 20:07:49 +00:00
Vitaly Buka 5468832aca Fix typo in comment
llvm-svn: 284295
2016-10-15 00:02:20 +00:00
Vitaly Buka b8e9603acd Don't compile cxa_thread_atexit.cpp with -DLIBCXX_ENABLE_THREADS=OFF
Reviewers: rmaprath

Subscribers: beanz, mgorny

Differential Revision: https://reviews.llvm.org/D25636

llvm-svn: 284294
2016-10-14 23:51:41 +00:00
Eric Fiselier ccc6502abc Mark test as unsupported without threads
llvm-svn: 284217
2016-10-14 09:12:53 +00:00
Asiri Rathnayake 0b357ed2ab [libcxxabi] Fix gcc build after r284128
NFC.

llvm-svn: 284141
2016-10-13 18:40:57 +00:00
Asiri Rathnayake 6d3ea6831d [libcxxabi] Refactor pthread usage into a separate API
This patch refactors all pthread uses of libc++abi into a separate API. This
is the first step towards supporting an externlly-threaded libc++abi library.

I've followed the conventions already used in the libc++ library for the same
purpose.

Patch from: Saleem Abdulrasool and Asiri Rathnayake

Reviewed by: compnerd, EricWF

Differential revisions:
  https://reviews.llvm.org/D18482 (original)
  https://reviews.llvm.org/D24864 (final)

llvm-svn: 284128
2016-10-13 15:05:19 +00:00
Eric Fiselier 829c0eab91 Provide a fallback __cxa_thread_atexit() implementation. Patch from Tavian Barnes
llvm-svn: 283988
2016-10-12 08:54:10 +00:00
Eric Fiselier c3dc89e4ab Fix libc++abi test config after recent libc++ changes
llvm-svn: 283962
2016-10-12 01:19:16 +00:00
Eric Fiselier fc1b0d5c24 [libc++abi] Fix bug which cased the static libunwind to always be chosen
llvm-svn: 283699
2016-10-09 20:44:48 +00:00
Igor Kudrin d9edde4ae2 Recommit r282692: [libc++abi] Use fallback_malloc to allocate __cxa_eh_globals in case of dynamic memory exhaustion.
Throwing an exception for the first time may lead to call calloc to
allocate memory for __cxa_eh_globals. If the memory pool is exhausted
at that moment, it results in abnormal termination of the program.

This patch addresses the issue by using fallback_malloc in that case.

In this revision, some restrictions were added into the test to not
run it in unsuitable environments.

Differential Revision: https://reviews.llvm.org/D17815

llvm-svn: 283531
2016-10-07 08:48:28 +00:00
Logan Chien 78d8ac368f [CMake] Fix libc++abi standalone cmake build.
The cmake files install directory has been changed to
${prefix}/lib/cmake/llvm since r259821.  Searching cmake modules in
${prefix}/share/llvm/cmake will result in fatal errors.

This commit fixes the out-of-tree build by changing the CMake module
search path to: "$(llvm-config --obj-root)/lib/cmake/llvm"

llvm-svn: 283100
2016-10-03 11:08:17 +00:00
Igor Kudrin 49df799762 Revert r282692: Use fallback_malloc to allocate __cxa_eh_globals in case of dynamic memory exhaustion.
The test breaks build bots.

llvm-svn: 282703
2016-09-29 08:11:57 +00:00
Igor Kudrin 962750b511 [libc++abi] Use fallback_malloc to allocate __cxa_eh_globals in case of dynamic memory exhaustion.
Throwing an exception for the first time may lead to call calloc to
allocate memory for __cxa_eh_globals. If the memory pool is exhausted
at that moment, it results in abnormal termination of the program.

This patch addresses the issue by using fallback_malloc in that case.

Differential Revision: https://reviews.llvm.org/D17815

llvm-svn: 282692
2016-09-29 06:38:06 +00:00
Shoaib Meenai 88c6acfedc [libc++abi] Default to DLL annotations on Windows
`__declspec(dllexport)` and `__declspec(dllimport)` should only be used
when building libc++abi as a DLL, but that's the more common use case,
so default to adding the annotations and add an option to opt out.

Similar to r282449, which made the corresponding change for libc++.

Differential Revision: https://reviews.llvm.org/D24945

llvm-svn: 282470
2016-09-27 03:44:09 +00:00
Saleem Abdulrasool 7ec747fe95 annotate more function visibility
These data and text symbols were missing annotations for building with hidden
visibility.  As we do not currently enable hidden visibility by default, this is
a NFC for the buildbots.

llvm-svn: 282300
2016-09-23 21:36:24 +00:00
Asiri Rathnayake 7c98baab29 [libcxxabi] cleanup the use of LIBCXXABI_HAS_NO_THREADS macro (NFC)
Align the naming / use of the macro LIBCXXABI_HAS_NO_THREADS to follow what we
have in libcxx. NFC.

llvm-svn: 282062
2016-09-21 09:09:32 +00:00
Eric Fiselier b4e15b8cee Fix side effect in assertion
llvm-svn: 281709
2016-09-16 08:16:07 +00:00
Logan Chien 7a78e5113a [lit] Replace print with lit_config.note().
This commit replaces print statement with lit_config.note().  This fixes
python3 support for check-libcxxabi.

llvm-svn: 280484
2016-09-02 13:56:05 +00:00
Saleem Abdulrasool 7c4700525c libc++abi: fix some -Wunused-function warnings
is_initialized is only used in the no threads case or if on non ARM Apple
targets.  Use the preprocessor to remove the function otherwise.  NFC.

llvm-svn: 280286
2016-08-31 20:29:05 +00:00
Logan Chien b2e620a23b Wrap LIBCXXABI_USE_LLVM_UNWINDER with defined().
This commit fixes -Wundef by replacing:

    #if !LIBCXXABI_USE_LLVM_UNWINDER

with:

    #if !defined(LIBCXXABI_USE_LLVM_UNWINDER)

llvm-svn: 280251
2016-08-31 15:16:40 +00:00
Chris Bieneman fafcb85e79 [CMake] Trying to fix the bots I broke
See: http://lab.llvm.org:8011/builders/libcxx-libcxxabi-x86_64-linux-ubuntu-cxx1z/builds/981/steps/build.libcxxabi/logs/stdio
llvm-svn: 280023
2016-08-29 22:26:00 +00:00
Chris Bieneman 8223a1d09f [CMake] Use -std=c++11 if supported
Summary: This patch adds a check for if -std=c++11 is a supported flag, and adds it to CMAKE_CXX_FLAGS if it is supported.

Reviewers: EricWF

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D24007

llvm-svn: 280021
2016-08-29 22:12:21 +00:00
Eric Fiselier 36ca35f505 [CMake] Be more consistent about naming targets and components in libc++abi
This patch (and commit summary) mirror r279675 by Chris B which was applied
to libc++ but not libc++abi.

Summary:
The point of this patch is to have a consistent convention for naming build,
check and install targets so that the targets can be constructed from the
project name.

This change renames a bunch of CMake components and targets from libcxxabi to
cxxabi. For each renamed target I've added a convenience target that matches
the old target name and depends on the new target. This will preserve function
of the old targets so that the change doesn't break the world. We can evaluate
if it is worth removing the extra targets later.

llvm-svn: 279938
2016-08-28 18:28:51 +00:00
Eric Fiselier 4b3308c27f [CMake] Apply r279151 cleanup to libc++abi.
This patch applies changes similar to those in r279515 to libc++abi.

Summary of changes in this patch:

* Renamed variable LLVM_CONFIG -> LLVM_CONFIG_PATH
* Renamed variable LIBCXXABI_BUILT_STANDALONE -> LIBCXXABI_STANDALONE_BUILD
* Add an include of AddLLVM in the tests subdirectory for add_lit_testsuite.

llvm-svn: 279936
2016-08-28 18:16:18 +00:00
Saleem Abdulrasool 0b7b36a9dd test: fix test under ASAN and MSAN
When we're running tests under ASAN or MSAN, they're compiled with -O1, which
enables tail call elimination. This causes backtrace_test to fail: the compiler
performs tail call elimination for call3_nothrow, but it can't for call3_throw,
leading to a mismatched frame count. Disable tail call elimination (and
inlining, just to be explicit) to avoid this.

Patch by Shoaib Meenai!

llvm-svn: 279935
2016-08-28 18:16:00 +00:00
Eric Fiselier 937c13d922 Default LIBCXXABI_LIBDIR_SUFFIX to LLVM_LIBDIR_SUFFIX
llvm-svn: 278773
2016-08-16 03:44:55 +00:00
Mehdi Amini 4d03572c14 Fix ASAN failures in the demangler
These were found fuzzing with ASAN.

llvm-svn: 278579
2016-08-13 00:02:33 +00:00
Petr Hosek 8ec04577d6 Depend directly on unwind when not building standalone
When using libunwind and not building as standalone project, we
can directly depend on the unwind library target.

Differential Revision: https://reviews.llvm.org/D23289

llvm-svn: 278169
2016-08-09 21:28:52 +00:00
Petr Hosek b9a77f827d Add lib directory to linker paths when using libunwind
When using libunwind and not building as standalone project, we
need to add LLVM library directory to the list of linker directories
to ensure it can find libunwind dependency.

Differential Revision: https://reviews.llvm.org/D23287

llvm-svn: 278076
2016-08-09 00:27:19 +00:00
Petr Hosek daee3be364 Do not depend on unwind when building standalone
When libcxxabi is being built standalone, unwind dependency is not
available, so do not use it even when LLVM unwinder is being
requested.

Differential Revision: https://reviews.llvm.org/D23228

llvm-svn: 278058
2016-08-08 22:09:54 +00:00
Eugene Zelenko 9d09275fa6 CMakeLists.txt cleanups: synchronize version with rest of LLVM, consistent spacing.
Differential revision: https://reviews.llvm.org/D23092

llvm-svn: 278030
2016-08-08 17:59:02 +00:00
Richard Smith 398d9c0c4a Attempt to bring peace to -Werror buildbots.
llvm-svn: 276022
2016-07-19 20:35:09 +00:00
Richard Smith 2f984cab4f [libcxxabi] When catching an exception of type nullptr_t with a handler of
pointer-to-member type, produce a null value of the right type.

This fixes a bug where throwing an exception of type nullptr_t and catching it
as a pointer-to-member would not guarantee to produce a null value in the catch
handler. The fix is pretty simple: we statically allocate a constant null
pointer-to-data-member representation and a constant null
pointer-to-member-function representation, and produce the address of the
relevant value as the adjusted pointer for the exception.

llvm-svn: 276016
2016-07-19 20:19:37 +00:00
Eric Fiselier b6b04e2013 Fix arc config to use https
llvm-svn: 275752
2016-07-18 02:05:52 +00:00
Saleem Abdulrasool 6e2aa5e1a9 libc++abi: add a top level option for using CompilerRT
Add an option to opt into compiler-rt instead of libgcc.  This option defaults
to OFF to avoid a behaviour change.  It is not possible to mix and match
different runtime libraries.  Disabling this requires that libc++ is built
accordingly.  This knob is particularly useful for targets that are GCC by
default (i.e. Linux).

llvm-svn: 275505
2016-07-15 00:49:42 +00:00
Eric Fiselier d1804db966 Fix [libcxxabi] Fix warning about uninitialized const member.
llvm-svn: 272824
2016-06-15 19:59:16 +00:00
Eric Fiselier 567b755b7c Fix warning about uninitialized const member. NFC
llvm-svn: 272823
2016-06-15 19:48:26 +00:00
Eric Fiselier 78621e4076 [libcxxabi] Reorder base class initializers in libc++abi tests to prevent -Wreorder
Summary:
This patch fixes -Wreorder warnings on test classes with virtual bases. Since the compiler is performing the reordering anyway this change *should* have NFC.

However the test notes that it is checking that "virtual base classes work properly". Since initialization order is clearly part of correctness I want to confirm that this wasn't an intentional mistake.



Reviewers: mclow.lists, howard.hinnant

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D21396

llvm-svn: 272821
2016-06-15 19:33:01 +00:00
Eric Fiselier f5ff11c432 Suppress warnings about the operations currently under test.
llvm-svn: 272819
2016-06-15 19:07:19 +00:00
Eric Fiselier 2d6714a9c5 Partially revert r270816: build with -fvisibility=hidden.
This patch breaks the ABI on linux when libc++abi.a is statically linked into
libc++.so. Certain libc++ symbols get exported from libc++abi.a as hidden
and therefore they also get hidden in libc++.so.

The symbols is question are:

* _ZNKSt3__121__basic_string_commonILb1EE20__throw_out_of_rangeEv
* _ZNKSt3__121__basic_string_commonILb1EE20__throw_length_errorEv
* _ZNKSt3__120__vector_base_commonILb1EE20__throw_length_errorEv

I imagine we just need to fix the visibility for these symbols in the libc++
headers but I'm reverting the patch until it's sorted.

llvm-svn: 271500
2016-06-02 08:14:28 +00:00
Eric Fiselier ffd1893df5 [libcxxabi] Allow target flags to affect configuration tests.
Summary:
This patch changes the libc++abi CMake so that it adds certain target flags like  '-m32' or '--gcc-toolchain' before including `config-ix.cmake`.
Since these flags can affect things like `check_library_exists([...])` they needed to be added before the tests are performed.

Additionally this patch adds `LIBCXXABI_BUILD_32_BITS` which defaults to `LLVM_BUILD_32_BITS`.

This patch fixes:

https://llvm.org/bugs/show_bug.cgi?id=27950
https://llvm.org/bugs/show_bug.cgi?id=27959

Reviewers: danalbert, jroelofs, bcraig, compnerd, EricWF

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D20886

llvm-svn: 271470
2016-06-02 02:18:31 +00:00
Asiri Rathnayake ece18f4c14 [libcxxabi][test] Add missing return statement.
This causes a test failure when running with -Werror=return-type.

NFC.

llvm-svn: 271423
2016-06-01 19:13:53 +00:00
Ben Craig 658310b83e Missed part of D16545 (static lib testing)
http://reviews.llvm.org/D16545

llvm-svn: 271388
2016-06-01 12:50:30 +00:00
Chris Bieneman 1d72b89580 [CMake] Update to requiring CMake 3.4.3
Summary:
This is as per the discussions on developer lists:

http://lists.llvm.org/pipermail/llvm-dev/2016-April/098780.html
http://lists.llvm.org/pipermail/llvm-dev/2016-May/100058.html

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D20829

llvm-svn: 271330
2016-05-31 20:21:53 +00:00
Asiri Rathnayake 57e446dafa [libcxxabi] Introduce a -fno-exceptions libc++abi libary variant
Currently there is only support for a -fno-exceptions libc++ build. This is
problematic for functions such as std::terminate() which are defined in
libc++abi and using any of those functions throws away most of the benefits
of using -fno-exceptions (code-size). This patch introduces a -fno-exceptions
libc++abi build to address this issue.

This new variant of libc++abi cannot be linked against any with-exceptions
code as some symbols necessary for handling exceptions are missing in this
library.

Differential revision: http://reviews.llvm.org/D20677

Reviewers: EricWF, mclow.lists, bcraig
llvm-svn: 271267
2016-05-31 12:01:32 +00:00
Saleem Abdulrasool 18ef564c8b libc++abi: build with -fvisibility=hidden
Enable building libc++abi with hidden visibility by default.  The ABI mandated
interfaces (and a few extra) are already set up to be externally visible.  This
allows us to ensure that any implementation details are not leaked.

llvm-svn: 270816
2016-05-26 02:12:20 +00:00
Ben Craig 24a986108f Allow explicit pthread opt-in
When building libcxxabi in tree (i.e. in llvm/projects/libcxxabi,
along with llvm/projects/libcxx), libcxx's config_site.in doesn't
get created in a timely manner. This means that any configuration
that is normally set in libcxx's config_site.in needs to be
duplicated in libcxxabi to successfully build libcxxabi. This patch
does exactly that for the _LIBCPP_HAS_THREAD_API_PTHREAD
preprocessor define.

http://reviews.llvm.org/D20574

llvm-svn: 270732
2016-05-25 17:37:38 +00:00
Saleem Abdulrasool f51af6c9cd libc++abi: make __cxa_call_unexpected visible
This may be invoked by the compiler, and needs to be made available so that the
users can reference it.

llvm-svn: 269255
2016-05-11 23:56:37 +00:00
Saleem Abdulrasool 7d5169b68d libc++abi: fix visibility of personalities
The personality routines need to be exposed to the users as the functions
reference the personality routine to handle exceptions.

llvm-svn: 268477
2016-05-04 04:22:29 +00:00
Ben Craig e9fdfd868a Enable testing for static libc++abi
This change leverages framework changes made in libcxx. See those changes for
more details. (http://reviews.llvm.org/D16544)

Some Mac specific logic for testing against libc++abi had to be moved from
libcxxabi's config.py, as it was overriding choices made in libcxx's config.py.
That logic is now in libcxx's target_info.py.

http://reviews.llvm.org/D16545

llvm-svn: 266729
2016-04-19 12:47:38 +00:00
Eugene Zelenko 7deb1ac8a1 [CMake] Fix misleading error message in CMakeLists.txt.
Differential revision: http://reviews.llvm.org/D17117

llvm-svn: 266635
2016-04-18 17:40:18 +00:00
Ben Craig ab56c4041b Respect LIBCXXABI_LIBDIR_SUFFIX before an install
Prior to this patch, setting LIBCXXABI_LIBDIR_SUFFIX would confuse the
check-libcxxabi target. libc++abi.* would get output to lib instead of
lib${LIBCXXABI_LIBDIR_SUFFIX}, but the tests would look in the suffixed
directory.

Now, we match what libcxx does, and set the CMAKE_*_OUTPUT_DIRECTORY to the
LIBRARY_DIR.

http://reviews.llvm.org/D17410

llvm-svn: 266611
2016-04-18 13:30:38 +00:00
Paul Robinson d74e849270 Update copyright year to 2016.
llvm-svn: 264952
2016-03-30 22:40:47 +00:00
Jonas Hahnfeld 626557be6b [libcxxabi] Disable cxa_thread_atexit_test if unavailable
The feature check is already in place when building the library but wasn't
honored for the tests.

Differential Revision: http://reviews.llvm.org/D18205

llvm-svn: 263699
2016-03-17 10:00:24 +00:00
Ben Craig 5d78477ba1 Reducing stack usage of test
This test has a lot of classes with large amounts of manually inserted padding in them, presumably to prevent various optimizations. The test then creates lots of these objects on the stack. On embedded targets, this was usually enough to overflow the stack.

I moved the objects to global / namespace scope. Since the tests are each in their own namespace, there should be no cross-test conflicts.

llvm-svn: 262717
2016-03-04 14:25:13 +00:00
Ben Craig acd5ee88df [libcxxabi] Teach cxa_demangle about Hexagon's long double size
cxa_demangle's default size for a long double is 10 bytes. Hexagon
only has an 8 byte long double though.

llvm-svn: 258313
2016-01-20 14:10:23 +00:00
Ben Craig a6dc36f65e [libcxxabi] Make test tolerant of uncommon floating literal demanglings
libcxxabi uses the C99 library's %a format specifier to turn a floating
point value into a hexadecimal string representation. The %a format
specifier is rather loosely defined in the C spec though, and some C
libraries emit a different (but valid) string for a given floating
point value. In particular, the C spec only requires that there is a
single, non-zero hexadecimal digit on the left of the decimal point.
Given that constraint, there are typically four different valid 
representations of a floating point number. I have updated the test to
accept any of the valid representations for demangled floating
point literals.

llvm-svn: 258311
2016-01-20 14:03:27 +00:00
Eric Fiselier 3f7c20747d Mark some tests as XFAIL with GCC due to compiler bugs
llvm-svn: 258284
2016-01-20 04:06:46 +00:00
Eric Fiselier 203655a936 Fix link flags order in RUN command.
llvm-svn: 258277
2016-01-20 03:04:50 +00:00
Eric Fiselier 6f630f800b Recommit r256322: Fix PR25898 - Check for incomplete pointers types in can_catch(...)
This patch re-commits r256322 and r256323. They were reverted due to a OS X
test failure. The test failure has been fixed by libc++ commit r258217.

This patch also adds some additional tests.

llvm-svn: 258249
2016-01-19 23:42:10 +00:00
Eric Fiselier 88c15c9d6f Revert r258222 because it's missing files. Will re-commit complete patch
llvm-svn: 258228
2016-01-19 23:40:49 +00:00
Eric Fiselier ccd5d8d801 Recommit r256322: Fix PR25898 - Check for incomplete pointers types in can_catch(...)
This patch re-commits r256322 and r256323. They were reverted due to a OS X
test failure. The test failure has been fixed by libc++ commit r258217.

This patch also adds some additional tests.

llvm-svn: 258222
2016-01-19 23:37:51 +00:00
Eric Fiselier 58ad9b19cc Add missing license headers
llvm-svn: 258201
2016-01-19 22:07:10 +00:00
Nico Weber 6977ee7f4c Revert r256322 (and follow-up 256323), the test it added does not pass on OS X.
llvm-svn: 257896
2016-01-15 15:44:14 +00:00
Dan Gohman d51bd8dd2e [WebAssembly] Accomodate wasm's 128-bit long double.
llvm-svn: 257614
2016-01-13 16:39:30 +00:00
Eric Fiselier dfe216dba8 Add new tests for throwing incomplete pointer types
llvm-svn: 256323
2015-12-23 07:04:32 +00:00
Eric Fiselier 88b26886b2 Fix PR25898 - Check for incomplete pointers types in can_catch(...)
llvm-svn: 256322
2015-12-23 06:35:25 +00:00
Logan Chien 338d6de5fa Fix ARM __cxa_end_cleanup() and gc-sections.
This commit adds SHF_ALLOC and SHF_EXECINSTR section flags to
`.text.__cxa_end_cleanup` section.  This fixes a link error when we are
using integrated-as and `ld.gold` (with `-Wl,--gc-sections` and
`-Wl,--fatal-warnings`.)

Detailed Explanation:

1. There might be some problem with LLVM integrated-as.  It is not
   emitting any section flags for text sections.  (This will be fixed in
   an independent commit.)

2. `ld.gold` will skip the external symbols in the section without
   SHF_ALLOC.  This is the reason why `.text.__cxa_end_cleanup_impl`
   section is discarded even though it is referenced by
   `__cxa_end_cleanup()`.

This commit workaround the problem by specifying the section flags
explicitly.

Fix http://llvm.org/PR21292

llvm-svn: 256241
2015-12-22 14:38:30 +00:00
Eric Fiselier 3c9babc55f [libc++abi] Use libgcc and libgcc_s to provide _Unwind symbols instead of libgcc_eh.a
Summary:
libgcc_eh.a cannot be used when building libc++abi as a shared library (the default configuration). See this post for some more discussion: https://gcc.gnu.org/ml/gcc/2012-03/msg00104.html

This patch reverts back to using libgcc_s when linking libc++abi.so. 


Reviewers: danalbert, chandlerc, mclow.lists, ismail, compnerd

Subscribers: vkalintiris, cfe-commits

Differential Revision: http://reviews.llvm.org/D15440

llvm-svn: 255559
2015-12-14 22:20:04 +00:00
Evgeniy Stepanov 3e01d1b32e Replace cmake check for printf with a check for fopen.
Printf is a builtin, and the check fails with -Werror because of a clang
warning about an incompatible redeclaration.

llvm-svn: 255186
2015-12-10 00:44:42 +00:00
Saleem Abdulrasool 1750b2ba89 .gitignore: ignore vim swap files
llvm-svn: 254692
2015-12-04 02:15:02 +00:00
Saleem Abdulrasool 12315edf03 ibc++abi: mark visibility
Mark functions and types with the appropriate visibility.  This is particularly
useful for environments which explicitly indicate origin of functions (Windows).
This aids in generating libc++abi as a DSO which exposes only the public
interfaces.

llvm-svn: 254691
2015-12-04 02:14:58 +00:00
Saleem Abdulrasool 242d67b687 c++abi: whitespace adjustment
Cleanup some code with clang-format to make the following change easier to
identify material difference.  NFC.

llvm-svn: 254690
2015-12-04 02:14:41 +00:00
Saleem Abdulrasool e113b5e9af c++abi: use __builtin_offsetof instead of offsetof
Use `__builtin_offsetof` in place of `offsetof`.  Certain environments provide a
macro definition of `offsetof` which may end up causing issues.  This was
observed on Windows.  Use `__builtin_offsetof` to ensure correct evaluation
everywhere.  NFC.

llvm-svn: 253435
2015-11-18 05:33:38 +00:00
Eric Fiselier 3cf3cfc4c5 Fix LIBCXXABI_HAS_NO_THREADS configuration.
llvm-svn: 250316
2015-10-14 19:21:38 +00:00
Eric Fiselier 035ddc2046 Configure for config site header
llvm-svn: 250313
2015-10-14 19:01:47 +00:00
Eric Fiselier 453da19d2d Add config.project_obj_root to the libc++abi testsuite
llvm-svn: 250307
2015-10-14 18:20:48 +00:00
Marshall Clow 8ebfb60efa Fix Bug 25103 - _cxa_demangle improperly demangles virtual thunks. Thanks to Jason King for the report and suggested fix
llvm-svn: 250097
2015-10-12 20:45:05 +00:00
Marshall Clow a552480298 Fix incorrect parsing of arguments for nested functions. Reviewed as http://reviews.llvm.org/D13192. Thanks to Anseny Kapoulkine for the patch.
llvm-svn: 249649
2015-10-08 03:02:09 +00:00
Nico Weber 4a88f1ed71 Let cxa_demangle.cpp compile with gcc/libstdc++ 4.8 and clang-cl/MSVC2013's STL.
libstdc++ needs a few typedefs in malloc_alloc. MSVC's STL needs rebind(),
construct(), destroy().  MSVC2013 also has no snprintf, but it exists in 2015.

llvm-svn: 248129
2015-09-20 18:10:46 +00:00
Saleem Abdulrasool af99cd4174 EH: fix register usage for SjLj
When using SjLj EH, do not use __builtin_eh_return_regno, map directly to the
ID.  This would work on some targets, particularly those where the non-SjLj EH
personality used the same register mapping (0 -> 0, 1 -> 1).  However, this is
not guaranteed.  Avoiding the use of the builtin enables the use of libc++ with
SjLj EH on all targets.

llvm-svn: 248108
2015-09-20 02:08:31 +00:00
Eric Fiselier 388c1a040a Convert LIBCXXABI_BUILD_32_BITS to LLVM_BUILD_32_BITS.
llvm-svn: 246516
2015-09-01 01:02:06 +00:00
Eric Fiselier c79a8f7753 Fix or disable C++11 tests in C++03 mode
llvm-svn: 245531
2015-08-20 01:22:17 +00:00
Eric Fiselier 2838c169a5 [libcxxabi] Add "install-libcxxabi" target.
Summary:
Currently you can't install libc++abi from within the LLVM tree without installing all of LLVM. This patch adds an install rule for libc++abi.


Reviewers: danalbert, compnerd, rengolin, beanz

Subscribers: martell, beanz, jroelofs, cfe-commits

Differential Revision: http://reviews.llvm.org/D11682

llvm-svn: 245461
2015-08-19 17:17:21 +00:00
Renato Golin 4b79ebceb4 [AArch64] Quick fix for cxa demangler
This makes all libcxxabi tests pass on AArch64. Further changes and
new tests to come.

Patch by Keith Walker.

llvm-svn: 245449
2015-08-19 15:24:03 +00:00
Nico Weber da99734d89 Revert r243752, it broke running tests on OS X (PR24491).
llvm-svn: 245325
2015-08-18 18:29:33 +00:00
Tanya Lattner be2225f115 Update to new lists.llvm.org
llvm-svn: 244004
2015-08-05 04:01:26 +00:00
Renato Golin 9e737939fb [libc++abi] Allow use just compiled clang++ for tests
Currently, the tests assume the system compiler is the one we want
to test, but if we build libcxxabi together with LLVM+Clang, it'll
get the wrong compiler.

This patch allows us to test if we have clang++ in our /bin directory,
and if so, use it.

llvm-svn: 243752
2015-07-31 15:25:11 +00:00
Daniel Sanders f8e6f4496b [libcxxabi][mips] Correct float_data::mangled_size for all ABI's.
Summary:
Patch by Nitesh Jain and Jaydeep Patil with a small revision to use ABIs rather
than Architecture Revisions (which currently imply particular ABIs).

Fixes test_demangle.pass.cpp (PR24149).

Subscribers: mclow.lists, jaydeep, nitesh.jain, hans, cfe-commits

Differential Revision: http://reviews.llvm.org/D11483

llvm-svn: 243645
2015-07-30 16:11:04 +00:00
Daniel Sanders 83934d3915 [libcxxabi] Add -funwind-tables to the test compilation options.
Summary:
backtrace_test.pass.cpp depends on unwind tables. These are generated by
-funwind-tables which is the default for x86 but not for other targets.

Thanks to Nitesh Jain for helping to narrow this down.

Fixes PR24148

Reviewers: jroelofs

Subscribers: cfe-commits, jroelofs, llvm-commits, hans

Differential Revision: http://reviews.llvm.org/D11529

llvm-svn: 243296
2015-07-27 18:20:17 +00:00
Logan Chien ac1d84ebb1 Remove include directive for the unused libunwind_ext.h.
llvm-svn: 241993
2015-07-12 14:47:53 +00:00
Saleem Abdulrasool 8d5ab875f6 fallback_malloc: silence conversion warning (NFC)
This silences some conversion warnings from GCC 4.9.2.  Simply casting the RHS
doesn't seem to be sufficient to silence the warning.  Convert the operation
equal operator usage to calculation and assignment.

llvm-svn: 238945
2015-06-03 17:25:35 +00:00
Saleem Abdulrasool fcdcf1b1e9 fallback_malloc: silence qual-cast warning (NFC)
This silences a GCC 4.9.2 qual-cast warning in the fallback_malloc codepath.
NFC.

llvm-svn: 238944
2015-06-03 17:25:33 +00:00
Marshall Clow 604de5c256 Implement uncaught_exceptions() to get a count, rather than a bool. Update the libc++abi version. Reviewed as http://reviews.llvm.org/D10067
llvm-svn: 238827
2015-06-02 13:03:17 +00:00
Logan Chien bbb4b1ca25 libcxx: Switch to use __gnu_unwind_frame() for libunwind.
As a step to fix libunwind unw_step(), a new function
__gnu_unwind_frame() has been introduced to libunwind, and it is
required to use this function so that some libunwind internal data
structure can be updated properly.

llvm-svn: 238561
2015-05-29 15:34:24 +00:00
Chaoren Lin 3abb86da62 Make sure !empty() before calling String::front().
Reviewers: howard.hinnant

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D9954

llvm-svn: 238263
2015-05-26 23:14:26 +00:00
Anton Korobeynikov 1af9c7b9d4 LIBCXXABI_LIBUNWIND_INCLUDES is already set before calling find_path, and find_path will not update it.
So cmake will throw error "include_directories given empty-string as include directory". 
Use other variable name for the include path and do not find the default libunwind.h in the system path.

http://reviews.llvm.org/D9641

Patch by Jingyi Wei!

llvm-svn: 236936
2015-05-09 21:03:01 +00:00
Anton Korobeynikov 396441c873 Typos
llvm-svn: 236889
2015-05-08 18:14:14 +00:00
Anton Korobeynikov d3b50dce40 Fix "TODO" and provide the configure-time options to find libunwind.
This is done the same way as we're looking for libc++

llvm-svn: 236874
2015-05-08 16:10:11 +00:00
Eric Fiselier 65ace9daa3 Disallow conversions from function pointers to void*.
Function pointers and member function pointers cannot be converted to void*.
libc++abi incorrectly allows this conversion for function pointers.

Review URL: http://reviews.llvm.org/D8811

llvm-svn: 236299
2015-05-01 01:49:37 +00:00
Eric Fiselier 9429684cce Fix syntax error in CMake created when a variable is not defined.
llvm-svn: 236115
2015-04-29 15:53:03 +00:00
Saleem Abdulrasool 03b487bf19 libc++abi: work around layering violation
This papers over a layering violation currently between libc++abi and libunwind.
It reaches into the sources to get the declaration of an ABI defined function.
This should allow the ARM buildbot to continue building libc++abi again.

llvm-svn: 235965
2015-04-28 02:52:47 +00:00
Saleem Abdulrasool e5f6e2b671 libc++abi: try harder to force the LLVM unwinder on ARM
Attempting to default the option to ON for ARM doesnt seem to work.  Force the
check lower and perform the check at the two sites that matter: the CPPFLAGS
definition and the header search path setup.

llvm-svn: 235964
2015-04-28 02:09:53 +00:00
Saleem Abdulrasool fd8a75d730 libc++abi: enable LLVM unwinder by default for ARM
libc++abi uses EHABI extensions, which are only part of the LLVM unwinder.  When
targeting ARM by default, enable the use of the LLVM unwinder.  Hopefully this
will fix the ARM native bot

llvm-svn: 235904
2015-04-27 18:19:33 +00:00
Saleem Abdulrasool 7c5d5ac831 libc++abi: remove unused variable
The externC variable was set but unused.  This constantly flagged a warning from
gcc.  Replace it with a comment until such a time that we need it.

llvm-svn: 235830
2015-04-27 02:21:57 +00:00
Saleem Abdulrasool a49aa027c1 libc++abi: clear up some -Wqual-cast warnings
Cleans up cast qualifier warnings identified by GCC 4.9.2.

llvm-svn: 235829
2015-04-27 02:21:55 +00:00
Saleem Abdulrasool 91aef804b1 libc++abi: silence some warnings
Cleans up the -Wundef warning caused by the use of the __LITTLE_ENDIAN__ macro.
Instead use `__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__`.  `__BYTE_ORDER__` is
defined by GCC since 4.2 and by clang.  This avoids the undef case where a macro
may be undefined.  This has previously caught real errors in libunwind.

llvm-svn: 235828
2015-04-27 02:21:52 +00:00
Saleem Abdulrasool a121d08ff8 libc++abi: remove build infrastructure for unwind
This removes the libunwind build infrastructure as libunwind is gaining its own
CMakeLists.txt.  The removal must occur first due to the multiple definitions of
the same target.

llvm-svn: 235794
2015-04-25 01:46:29 +00:00
Saleem Abdulrasool ac18e0639f libc++abi: move tests back
These are apparently related to libc++'s unwind personality handler and not
unwind core.  Move them back to the correct location.

llvm-svn: 235765
2015-04-24 20:20:54 +00:00
Saleem Abdulrasool a01b1afad4 libc++abi: remove the duplicated unwind content
The unwinder has been moved into its own project setup at
http://svn.llvm.org/projects/libunwind/trunk.  This simply removes the now
duplicated content.  This move was previously discussed on llvmdev at [1].

[1] http://lists.cs.uiuc.edu/pipermail/llvmdev/2015-January/081507.html

llvm-svn: 235759
2015-04-24 19:40:31 +00:00
Reid Kleckner fa990f0338 Declare __cxa_new_handler as extern "C", or it declares a new variable
Reverts change from r219012 to fix ABI incompatibility. Let's not worry
about the GCC warning here.

llvm-svn: 235013
2015-04-15 15:35:56 +00:00
Eric Fiselier b6030b9dbf [libcxxabi] Disallow Base to Derived conversions for catching pointers to members.
Summary:
I accidentally implemented the 4.11 [conv.mem] conversions for libc++abi in a recent patch. @majnemer pointed out that 5.13 [except.handle] only allows the pointer conversions in 4.10 and not those is 4.11. This patch no longer allows the following example code:

```c++
struct A {};
struct B : public A {};

int main() {
  try {
    throw (int A::*)0;
  } catch (int B::*) {
    // exception caught here.
  }
}
```

Reviewers: mclow.lists, jroelofs, majnemer

Reviewed By: majnemer

Subscribers: majnemer, cfe-commits

Differential Revision: http://reviews.llvm.org/D8845

llvm-svn: 234254
2015-04-06 23:03:01 +00:00
Eric Fiselier 1b00fc5d81 [libcxxabi] Fix multi-level pointer conversions and pointer to member conversion detection.
Summary:
Currently there are bugs in out detection of multi-level pointer conversions and pointer to member conversions. This patch fixes the following issues.

* Allow multi-level pointers with different nested qualifiers.
* Allow multi-level mixed pointers to objects and pointers to members with different nested qualifiers.
* Allow conversions from `int Base::*` to `int Derived::*` but only for non-nested pointers.

There is still some work that needs to be done to clean this patch up but I want to get some input on it.
Open questions:

* Does `__pointer_to_member_type_info::can_catch(...)` need to adjust the pointer if a base to derived conversion is performed?


Reviewers: danalbert, compnerd, mclow.lists

Reviewed By: mclow.lists

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8758

llvm-svn: 233984
2015-04-02 23:26:37 +00:00
Eric Fiselier 0e90f3ff9a Revert r228351 - Dont install header files.
llvm-svn: 233781
2015-04-01 02:56:13 +00:00
Ed Schouten 25a624e43d Also use dl_iterate_phdr() on CloudABI.
The unwinder now works on CloudABI. All exception-related libc++ tests
now pass.

This change was actually part of D8169, which also adds support for
FreeBSD. That, however, still requires some more polishing.

llvm-svn: 233676
2015-03-31 07:59:53 +00:00
Ed Schouten d0c480b04c Don't print debugging messages to stdout.
There is some debugging code in cxa_demangle.cpp that prints messages on
stdout. In general this is not safe, as the program itself may use
stdout to write its output. Change this code to write to stderr.

Differential Revision:	http://reviews.llvm.org/D8167

llvm-svn: 232716
2015-03-19 09:17:21 +00:00
Eric Fiselier cf74f5d20b Let libc++'s LIT configuration setup our linker paths and env.
llvm-svn: 232529
2015-03-17 19:45:21 +00:00
Eric Fiselier 4260252222 add option to tell LIT where to find the libc++ library when built out of tree
llvm-svn: 232518
2015-03-17 18:58:14 +00:00
Renato Golin fab3c735c3 Update copyright year to 2015.
llvm-svn: 232095
2015-03-12 20:13:54 +00:00
Eric Fiselier fe2f1f095f Remove unneeded const_cast in readPointerHelper. Pointed out by jroelofs
llvm-svn: 231852
2015-03-10 21:32:53 +00:00
Eric Fiselier e6cdf34116 [libcxx] Fix PR21580 - Undefined behavior in readEncodedPointer()
Summary: This patch fixes a bug in `readEncodedPointer()` where it would read from memory that was not suitably aligned. This patch fixes it by using memcpy.

Reviewers: danalbert, echristo, compnerd, mclow.lists

Reviewed By: compnerd, mclow.lists

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8179

llvm-svn: 231839
2015-03-10 20:43:34 +00:00
Saleem Abdulrasool 762ff68a95 Unwind: define more interfaces more often
These are also part of the Unwind interfaces.  However, their implementation is
different in EHABI vs frame tables based exception handling.  Always provide a
definition.  This partially undoes a movement change from earlier to make the
handling a bit simpler rather than grouping the two implementations together.

llvm-svn: 231690
2015-03-09 19:35:12 +00:00
Saleem Abdulrasool d9e577933b Unwind: always define unwind APIs
These interfaces are not zero cost related, but rather generic unwind APIs used
by consumers of the Unwind library.  Always provide the definition as they are
needed for both Zero Cost and Frame Table based implementations.

llvm-svn: 231666
2015-03-09 16:46:43 +00:00
Saleem Abdulrasool a99e152e80 Unwind: remove unnecessary check
Linux/GNU on AArch64 EH ABI Level III is implemented using exception frame
tables as defined in LSB II.11.6.  The exception frame tables use the DWARF
Exception Header Encoding as described in LSB II.11.5.1.  We already defined the
appropriate definition _LIBUNWIND_SUPPORT_DWARF_UNWIND to enable this.

llvm-svn: 231580
2015-03-07 22:21:31 +00:00
Saleem Abdulrasool af7e539595 Unwind: tweak register handling for AArch64
AArch64 uses // as the comment character (although, Darwin uses ;).  However,
since we are using the C preprocessor on these files, // can be used as the
comment character across the board.

Tweak the platform guard to recognise __aarch64__ as well as __arm64__ for the
platform identifier.

llvm-svn: 231578
2015-03-07 21:36:08 +00:00
Nick Lewycky 5b2d125c92 Fix build with GCC:
- GCC doesn't support #pragma mark, only Apple GCC and clang. Wrap the pragma mark's in #if 0 to make gcc ignore them but xcode still see them.
 - Wrap a bunch of "#pragma clang" lines in #ifdef __clang__.
 - Pacify gcc's -Wparenthesis in a case where it's quite reasonable.

llvm-svn: 231344
2015-03-05 02:56:05 +00:00
Eric Fiselier 14dbeaadc1 [libcxxabi] Build both static and shared versions of libc++abi by default.
Summary:
This patch builds both static and shared versions of libc++abi by default. It adds/repurposes the following cmake options:
* `LIBCXXABI_ENABLE_SHARED`: Enable/disable building the shared library. (Previously using `OFF` would build the static library instead)
* `LIBCXXABI_ENABLE_STATIC`: Enable/disable building the static library.

This patch also re-purposes the CMake target `cxxabi` to be a meta-target for `cxxabi_shared` and `cxxabi_static`. This could potentially break other builds that depend on `cxxabi` being a library target. We will need to apply a patch to libc++'s CMake before committing this change. 

Running the tests is still only supported when the shared version is built. Support for running the tests against the static library will come in another patch.


Reviewers: jroelofs, mclow.lists, danalbert, compnerd

Reviewed By: danalbert, compnerd

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D8013

llvm-svn: 231075
2015-03-03 15:59:09 +00:00
Saleem Abdulrasool 48205982a3 Unwind: make it build on Darwin again
The support for the LSB eh_frame_hdr extension was overzealous in trying to
include headers.  Be more careful to permit building on Darwin.

llvm-svn: 230837
2015-02-28 02:23:54 +00:00
Dan Albert 198d366fad Add .eh_frame_hdr search to Linux unwinder.
This improves the performance of unwinding on DWARF based targets. The
32-bit x86 support for scanning the full eh_frame
(CFI_Parser::findFDE) apparently does not work (at least not on
Linux). Since the eh_frame_hdr code delegates to that, this still
doesn't work for x86 Linux, but it has been tested on x86_64 Linux and
aarch64 Android.

llvm-svn: 230802
2015-02-27 22:21:07 +00:00
Jonathan Roelofs 0b57fc3147 Add remote testing support to the lit config
Now that the corresponding support in libcxx has landed (r230592), adding
support here is pretty simple.

llvm-svn: 230643
2015-02-26 15:55:01 +00:00
Saleem Abdulrasool bd04c44f48 Unwind: clean up some GCC warnings
This cleans up a set of -Wsign-conversion, -Wint-conversion, and -Wformat
warnings from GCC 4.9.2 on Linux.  NFC.

llvm-svn: 230606
2015-02-26 04:01:37 +00:00
Jonathan Roelofs ea163d9fa8 Add .fpu directives to ARM unwind save & restore functions.
TODO: The iwmmx register save & restore functions still need the same treatment.
      I didn't do that in this patch because the integrated assembler has a bug
      where it refuses to build them on -march=armv6-m, even with
         .march armv5t
         .arm
      in front of those functions.

This should fix PR22384.

http://reviews.llvm.org/D7258

llvm-svn: 230360
2015-02-24 20:09:29 +00:00
Eric Fiselier 64cfdfea5a Add temporary workaround for missing symbol __cxa_throw_bad_new_array_length on OS X.
llvm-svn: 230125
2015-02-21 04:30:36 +00:00
Sergey Dmitrouk 0aa66cf8f8 Do not add -fno-exceptions without -funwind-tables
Adding just -fno-exceptions breaks libunwind in quite mysterious way
when it's there, but exception handling doesn't work because of dummy
unwind tables.

Also as using exceptions implies references to symbols defined in
libcxx, abort build of libcxxabi as shared library if we have to keep
exceptions (when compiler supports -fno-exceptions, but not
-funwind-tables; one example would be a cross-compiler, in which case
testing for -funwind-tables flag by CMake actually requires libunwind to
be available before it's built).

llvm-svn: 229427
2015-02-16 19:51:06 +00:00
Jonathan Roelofs d76078f81b Moar post-commit review.
Apparently typing is hard.

llvm-svn: 229216
2015-02-14 02:02:56 +00:00
Jonathan Roelofs bb755d614a Address post-commit review comments
llvm-svn: 229207
2015-02-14 01:38:35 +00:00
Jonathan Roelofs c1d025fb61 Make the unwinder build on thumbv6-m with the integrated assembler.
http://reviews.llvm.org/D7630

llvm-svn: 229194
2015-02-14 00:21:03 +00:00
Saleem Abdulrasool 9dd5ca1fe8 unwind: always export unw_local_addr_space
It seems that the remote unwinder is entirely unused at this moment.
unw_local_addr_space was referencing sThisAddressSpace which use to be a static
in global namespace.  It has since then become a member variable of
LocalAddressSpace.  Update this definition and always export it (needed to
implement unw_get_proc_info_by_ip for ARM).

llvm-svn: 229133
2015-02-13 19:04:48 +00:00
Saleem Abdulrasool ebfe815f5c unwind: use sizeof() instead of hardcoded sizes
The statically allocated strings have a fixed size which can be computed using
the sizeof operator rather than duplicating the allocation size which can drift.
NFC.

llvm-svn: 229126
2015-02-13 17:36:11 +00:00
Ed Schouten 12dc2c4f3b Don't use bzero() and strcpy().
Instead of bzero(), we can simply use memset(). The strcpy() calls are
unneeded, as we can simply keep track of a pointer to the constant
strings we are copying.

Reviewed by:	Jonathan Roelofs

llvm-svn: 229074
2015-02-13 07:18:22 +00:00
Saleem Abdulrasool 3db633ab81 unwind: use explicit memcpy for register saving
Convert the register saving code to use an explicit memcpy rather than the
implicit memcpy from the assignment.  This avoids warnings from -Wcast-qual on
GCC and makes the code more explicit.  Furthermore, use sizeof to calculate the
offsets rather than adding magic numbers, improving legibility of the code.
NFC.

llvm-svn: 228904
2015-02-12 04:25:05 +00:00
Saleem Abdulrasool a6b32ccec4 unwind: move exported APIs out of header
Ideally, we would do something like inline __declspec(dllexport) to ensure that
the symbol was inlined within libunwind as well as emitted into the final DSO.
This simply moves the definition out of the header to ensure that the *public*
interfaces are defined and exported into the final DSO.

This change also has "gratuitous" code movement so that the EHABI and generic
implementations are co-located making it easier to find them.

The movement from the header has one minor change introduced into the code:
additional tracing to mirror the behaviour of the non-EHABI interfaces.

llvm-svn: 228903
2015-02-12 04:25:03 +00:00
Saleem Abdulrasool a9bd96e76a unwind: tweak inclusion ordering to work around GCC
This is a slightly convoluted workaround.  GCC does not support the
__has_feature extension of clang, and this results in some issues with
static_asserts.  config.h defines static_assert as a macro with a C-specific
trickery.  This then propagates into the C++ headers included after config.h,
which are used with C++11 mode, enabling constexpr constructors.  The macro'ed
static_assert does not get treated as the static_assert builtin, and will cause
an error due to a non-empty constexpr constructor.  Tweaking the include order
permits the use of libc++ headers to build libunwind with GCC on Linux.

llvm-svn: 228809
2015-02-11 05:20:53 +00:00
Saleem Abdulrasool b8a83fdf5c unwind: clean up some -Werror=return-type warnings
Mark that the functions always return or abort if the register class is
unhandled.  Avoid placing the abort in the switch to permit -Wswitch-cover to
catch missing values.

llvm-svn: 228808
2015-02-11 05:20:50 +00:00
Saleem Abdulrasool e133422fa4 unwind: clean up more -Wformat warnings
This makes compilation on ARM -Wformat clean with GCC.  NFC.

llvm-svn: 228807
2015-02-11 05:20:47 +00:00
Saleem Abdulrasool 7ebbcd968b unwind: clean up straggling -Wundef warning
Conservatively define __ARM_ARCH to 4 in the case that it is undefined (e.g.
with GCC).

llvm-svn: 228806
2015-02-11 05:20:44 +00:00
Saleem Abdulrasool b5c3e56b38 unwind: silence -Wconversion warnings
Clean up implicit uint8_t to uint32_t conversion warnings identified by GCC.

llvm-svn: 228805
2015-02-11 05:20:42 +00:00
Eric Fiselier 1dfbfb8c9e Fix libcxxabi's library and object root for tests.
llvm-svn: 228779
2015-02-11 01:07:48 +00:00
Saleem Abdulrasool bb0aba7a00 unwind: improve compilation on Linux with gcc
gcc still defaults to C89 which does not support BCPL style comments.  This
splits up the sources list in CMakeLists and selectively adds compile flags for
using C99 which avoids a number of warnings in -Wpedantic mode.  NFC.

llvm-svn: 228665
2015-02-10 03:43:33 +00:00