These are not necessarily correct, just because Clang is configured
to use libc++ or compiler-rt as defaults doesn't mean that the host
compiler uses these as defaults as well. A more correct solution
would be to test the host compiler to check what the default actually
is as attempted in D46857.
Part of PR-38025.
Differential Revision: https://reviews.llvm.org/D49272
llvm-svn: 337033
Summary:
Use `-Wl,-z,global` for all Sanitizer shared libraries on
Android. We want them to be in the global group
(https://android.googlesource.com/platform/bionic/+/master/android-changes-for-ndk-developers.md#changes-to-library-search-order)
to avoid any alloc/dealloc mismatch between the libc allocator & said library.
`audioserver` was one of the binary that exhibited the problem with Scudo,
this seems to fix it.
[edited for accuracy]
Reviewers: eugenis, alekseyshl
Reviewed By: eugenis
Subscribers: kubamracek, srhines, mgorny, delcypher, #sanitizers, llvm-commits
Differential Revision: https://reviews.llvm.org/D49198
llvm-svn: 337010
Summary:
A prior refactoring accidentally dropped the case for using libc++abi as
the out-of-tree C++ runtime library for sanitizers. This patch restores
that functionality, which is used by Android, which can't depend on the
full libc++ for these libraries.
Reviewers: phosek, EricWF
Reviewed By: phosek
Subscribers: meikeb, kongyi, chh, mgorny, delcypher, llvm-commits, #sanitizers, pirama
Differential Revision: https://reviews.llvm.org/D49157
llvm-svn: 336749
This change adds a support for multiarch style runtimes layout, so in
addition to the existing layout where runtimes get installed to:
lib/clang/$version/lib/$os
Clang now allows runtimes to be installed to:
lib/clang/$version/$target/lib
This also includes libc++, libc++abi and libunwind; today those are
assumed to be in Clang library directory built for host, with the
new layout it is possible to install libc++, libc++abi and libunwind
into the runtime directory built for different targets.
The use of new layout is enabled by setting the
LLVM_ENABLE_RUNTIME_TARGET_DIR CMake variable and is supported by both
projects and runtimes layouts. The runtimes CMake build has been further
modified to use the new layout when building runtimes for multiple
targets.
Differential Revision: https://reviews.llvm.org/D45604
llvm-svn: 335809
build with an IDE (e.g. Xcode) as the generator.
Previously the global `USE_FOLDERS` property wasn't set in standalone
builds leading to existing settings of FOLDER not being respected.
In addition to this there were several targets that appeared at the top
level that were not interesting and clustered up the view. These have
been changed to be displayed in "Compiler-RT Misc".
Now when an Xcode project is generated from a standalone compiler-rt
build the project navigator is much less cluttered. The interesting
libraries should appear in "Compiler-RT Libraries" in the IDE.
Differential Revision: https://reviews.llvm.org/D48378
llvm-svn: 335728
Use compiler-rt builtins when selected as default Clang rtlib and avoid
explicitly passing -rtlib= flag to avoid the "argument unused during
compilation" warning.
This is a partial alternative to D47094 that does not rely on compiler
runtime checks.
Differential Revision: https://reviews.llvm.org/D47115
llvm-svn: 333037
Use libc++ when selected as default Clang stdlib and avoid checking
C++ compiler when using the in-tree version of libc++.
This is a partial alternative to D47094 that does not rely on compiler
runtime checks.
Differential Revision: https://reviews.llvm.org/D47100
llvm-svn: 333010
Rather then requiring the user to specify runtime the compiler
runtime and C++ standard library, or trying to guess them which is
error-prone, use auto-detection by parsing the compiler link output.
Differential Revision: https://reviews.llvm.org/D46857
llvm-svn: 332683
The source being compiled is plain C, but using .cc extension forces it
to be compiled as C++ which requires a working C++ compiler including
C++ library which may not be the case when we're building compiler-rt
together with libcxx as part of runtimes build.
Differential Revision: https://reviews.llvm.org/D47031
llvm-svn: 332679
Fuchsia is no longer treated as UNIX which means we need to explicitly
enable building of shared versions of runtimes.
Differential Revision: https://reviews.llvm.org/D46609
llvm-svn: 331922
Clang-cl supports the -gline-tables-only flag, so we were going down
that path. Honestly, we should just go ahead and enable full codeview
support.
llvm-svn: 330989
This expands the CMake check to handle both statically and dynamically
linked version of libc++abi and libunwind and matches the implemnetation
used elsewhere in LLVM.
Differential Revision: https://reviews.llvm.org/D45242
llvm-svn: 329205
Summary:
For some reason CMake can't find the `append` macro if LLVM is built separately and imported via `LLVM_CONFIG_PATH`.
Patch by Loo Rong Jie
Reviewers: rnk, vitalybuka
Reviewed By: rnk, vitalybuka
Subscribers: dberris, mgorny, llvm-commits, #sanitizers
Differential Revision: https://reviews.llvm.org/D43458
llvm-svn: 327876
This also slightly refactors the code that's checking the directory
presence which allows eliminating one unnecessary variable.
Differential Revision: https://reviews.llvm.org/D40637
llvm-svn: 320446
Per beanz, building compiler-rt standalone is a pretty important use
case, so the comment is very out of date.
Differential Revision: https://reviews.llvm.org/D40740
llvm-svn: 319570
Allow user to override shadow scale in compiler_rt by passing
-DCOMPILER_RT_ASAN_SHADOW_SCALE=n to CMake. Propagate the override
shadow scale value via a compiler define to compiler-rt and asan
tests. Tests will use the define to partially disable unsupported
tests. Set "-mllvm -asan-mapping-scale=<n>" for compiler_rt tests.
Differential Revision: https://reviews.llvm.org/D39469
llvm-svn: 318038
Make it possible to control building profile runtime separately from
other options. Before r313549, the profile runtime building was
controlled along with sanitizers. However, since that commit it is built
unconditionally which results in multiple builds for people building
different runtimes separately.
Differential Revision: https://reviews.llvm.org/D38441
llvm-svn: 314646
This is a resubmission of r313270. It broke standalone builds of
compiler-rt because we were not correctly generating the llvm-lit
script in the standalone build directory.
The fixes incorporated here attempt to find llvm/utils/llvm-lit
from the source tree returned by llvm-config. If present, it
will generate llvm-lit into the output directory. Regardless,
the user can specify -DLLVM_EXTERNAL_LIT to point to a specific
lit.py on their file system. This supports the use case of
someone installing lit via a package manager. If it cannot find
a source tree, and -DLLVM_EXTERNAL_LIT is either unspecified or
invalid, then we print a warning that tests will not be able
to run.
Differential Revision: https://reviews.llvm.org/D37756
llvm-svn: 313407
This was originally broken by r258744 which introduced a weak reference
from ubsan to ubsan_cxx. This reference does not work directly on
Windows because COFF has no direct concept of weak symbols. The fix is
to use /alternatename to create a weak external reference to ubsan_cxx.
Also fix the definition (and the name, so that we drop cached values)
of the cmake flag that controls whether to build ubsan_cxx. Now the
user-controllable flag is always on, and we turn it off internally
depending on whether we support building it.
Differential Revision: https://reviews.llvm.org/D37882
llvm-svn: 313391
This was intended to be a generic CMake solution to a problem
shared across several projects. It turns out it doesn't interact
very well certain CMake configurations, and furthermore the
"problem" is actually not a problem, as the problematic code
is never executed to begin with. So this really isn't solving
anything.
llvm-svn: 313191
Fuchsia's lowest API layer has been renamed from Magenta to Zircon.
Patch by Roland McGrath
Differential Revision: https://reviews.llvm.org/D37770
llvm-svn: 313106
Some projects need to add conditional dependencies on other projects.
compiler-rt is already doing this, and I attempted to add this to
debuginfo-tests when I ran into the ordering problem, that you can't
conditionally add a dependency unless that dependency's CMakeLists.txt
has already been run (which would allow you to say if (TARGET foo).
The solution to this seems to be to determine very early on the entire
set of projects which is enabled. This is complicated by the fact that
there are multiple ways to enable projects, and different tree layouts
(e.g. mono-repo, out of -tree, external, etc). This patch attempts to
centralize all of this into one place, and then updates compiler-rt to
demonstrate as a proof of concept how this can simplify code.
Differential Revision: https://reviews.llvm.org/D37637
llvm-svn: 313091
Resulting library binaries will be named libclang_rt.fuzzer*, and will
be placed in Clang toolchain, allowing redistribution.
Differential Revision: https://reviews.llvm.org/D36908
llvm-svn: 311407
Summary: This is to support Android where libc++abi is part of libc++.
Reviewers: srhines, EricWF
Subscribers: dberris, mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D36640
llvm-svn: 310769
Summary:
Define a build-time configuration option for the XRay runtime to
determine whether the archive will add an entry to the `.preinit_array`
section of the binary. We also allow for initializing the XRay data
structures with an explicit call to __xray_init(). This allows us to
give users the capability to initialize the XRay data structures on
demand.
This can allow us to start porting XRay to platforms where
`.preinit_array` isn't a supported section. It also allows us to limit
the effects of XRay in the initialization sequence for applications that
are sensitive to this kind of interference (i.e. large binaries) or
those that want to package XRay control in libraries.
Future changes should allow us to build two different library archives
for the XRay runtime, and allow clang users to determine which version
to link.
Reviewers: dblaikie, kpw, pelikan
Subscribers: mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D36080
llvm-svn: 309909
Android uses libgcc name even for shared library unlike other platforms
which use libgcc_s. Furthemore, Android libstdc++ has a dependency on
libdl. These need to be handled while performing CMake checks.
Differential Revision: https://reviews.llvm.org/D36035
llvm-svn: 309638
This change adds sanitizer support for LLVM's libunwind and libc++abi
as an alternative to libstdc++. This allows using the in tree version
of libunwind and libc++abi which is useful when building a toolchain
for different target.
Differential Revision: https://reviews.llvm.org/D34501
llvm-svn: 309362
This change adds support for compiler-rt builtins as an alternative
compiler runtime to libgcc.
Differential Revision: https://reviews.llvm.org/D35165
llvm-svn: 309361
This patch addresses two issues:
Most of the time, hacks with `if/else` in order to get support for
multi-configuration builds are superfluous.
The variable `CMAKE_CFG_INTDIR` was created precisely for this purpose: it
expands to `.` on all single-configuration builds, and to a configuration
name otherwise.
The `if/else` hacks for the library name generation should also not be
done, as CMake has `TARGET_FILE` generator expression precisely for this
purpose, as it expands to the exact filename of the resulting target.
Differential Revision: https://reviews.llvm.org/D35952
llvm-svn: 309341
This change adds sanitizer support for LLVM's libunwind and libc++abi
as an alternative to libstdc++. This allows using the in tree version
of libunwind and libc++abi which is useful when building a toolchain
for different target.
Differential Revision: https://reviews.llvm.org/D34501
llvm-svn: 309074
This change adds support for compiler-rt builtins as an alternative
compiler runtime to libgcc.
Differential Revision: https://reviews.llvm.org/D35165
llvm-svn: 309060
Summary:
Since r298413, the NEW behavior of the CMake policy CMP0056 is followed.
However, it is only effective after the call to cmake_minimum_required.
This causes CMAKE_EXE_LINKER_FLAGS etc. to be unused when CMake tries to
check compilers for languages specified in the 'project' declaration.
Set cmake_minimum_required(VERSION) at the top of the file and ahead of
the project declaration.
Reviewers: beanz
Subscribers: mgorny, srhines, llvm-commits
Differential Revision: https://reviews.llvm.org/D34282
llvm-svn: 305593
Disable building enable_execute_stack.c for targets that do not have
support for mprotect().
Differential Revision: https://reviews.llvm.org/D33018
llvm-svn: 302680
On Darwin, we're having multiple issues with using -fomit-frame-pointer in the AddressSanitizer and ThreadSanitizer runtimes, so we're actually not using -fomit-frame-pointer in the our builds of the sanitizer dylibs. This patch just pushes our internal change upstream.
The issues are usually with debuggers, profilers and other tools that unwind the stack (crash reporter), which are often simply not able to get a stack trace. And crashlogs that don't contain a stack trace are a huge problem.
Differential Revision: https://reviews.llvm.org/D31376
llvm-svn: 298859
Summary: check_cxx_compiler_flag and check_library_exists could fail because they ignored CMAKE_EXE_LINKER_FLAGS and therefore would always fail to produce executables. Cmake policy CMP0056 fixes this, but was explicitly set to OLD in our CMakeLists because it caused problems with test_target_arch. This change sets the policy to NEW to fix the problem with the compiler and library tests, and temporarily clears CMAKE_EXE_LINKER_FLAGS inside test_target_arch to emulate the old behavior there. This allows, for example, LTO builds that require lld to succeed.
Reviewers: davidxl, beanz
Reviewed By: beanz
Subscribers: fjricci, dberris, mgorny, mehdi_amini, tejohnson, rnk, llvm-commits
Differential Revision: https://reviews.llvm.org/D31098
llvm-svn: 298413
Revert "Fix sanitizer tests with LLVM_TOOL_LLD_BUILD=OFF."
Revert "[asan] Remove gc-sections test with bfd."
Revert "[asan] Disable globals-gc test with ld.bfd."
Revert "[asan] Fix dead stripping of globals on Linux (compiler-rt)"
OOM in gold linker.
llvm-svn: 298287
Summary:
For a reason that hasn't been investigated for lack of powerpc knowledge and
hardware, -fno-function-sections is required for the Sanitizers to work
properly on powerpc64le. Without, the function-sections-are-bad test fails on
that architecture (and that architecture only).
This patch re-enables the flag in the powerpc64le cflags.
I have to admit I am not entirely sure if my way is the proper way to do this,
so if anyone has a better way, I'll be happy to oblige.
Reviewers: kcc, eugenis
Reviewed By: eugenis
Subscribers: nemanjai, mgorny, llvm-commits
Differential Revision: https://reviews.llvm.org/D29285
llvm-svn: 293558
Summary:
-fno-function-sections was added as a default Sanitizer common cflag with
https://reviews.llvm.org/rL200683, the reasoning behind was that things would
break if linked with --gc-sections.
This appears to not be necessary anymore, as tests pass without, including
function-sections-are-bad.cc. There is a large benefit to having
function-sections when dealing with static libraries in terms of size and
dependencies that go away with --gc-sections.
Reviewers: kcc, eugenis
Reviewed By: eugenis
Subscribers: llvm-commits, mgorny
Differential Revision: https://reviews.llvm.org/D29132
llvm-svn: 293220
Summary:
We put empty object files in archives, which causes MSVC's linker to
complain about these objects not defining any previously undefined
symbols. Since we do it on purpose, this only creates noise during
the build process. This patch causes us to suppress the warnings.
Reviewers: rnk, samsonov
Subscribers: dberris, mgorny
Differential Revision: https://reviews.llvm.org/D28262
llvm-svn: 291011
Sanitizers are intentionally not including system headers and often declare slightly different function prototypes, which is incompatible with -fmodules and -fcxx-modules. Let’s simply exclude compiler-rt from using -fmodules.
Differential Revision: https://reviews.llvm.org/D25230
llvm-svn: 283658
Summary: This flag doesn't make sense on Windows systems.
Reviewers: beanz, kubabrecka, compnerd
Subscribers: dberris, llvm-commits, beanz
Differential Revision: https://reviews.llvm.org/D24320
llvm-svn: 280953
Summary:
Allow for use of cxxabi to be disabled from cmake.
This will make sanitizers usable when c++ abi is unavailable.
Reviewers: pcc, rnk, samsonov, beanz, compnerd
Subscribers: llvm-commits, compnerd, dberris
Differential Revision: https://reviews.llvm.org/D23639
llvm-svn: 279451
When compiler-rt's CMake is not directly invoked, it will currently not call
project() and thus ASM will not be enabled.
We also don't need to put the .S files through the C compiler then.
Differential Revision: https://reviews.llvm.org/D23656
llvm-svn: 279215
Summary: This will allow for the sanitizers to be used when c++ abi is unavailable.
Reviewers: samsonov, beanz, pcc, rnk
Subscribers: llvm-commits, kubabrecka, compnerd, dberris
Differential Revision: https://reviews.llvm.org/D23376
llvm-svn: 278848
Summary: This will allow for the sanitizers to be used when c++ abi is unavailable.
Reviewers: samsonov, beanz, pcc, rnk
Subscribers: llvm-commits, kubabrecka, compnerd, dberris
Differential Revision: https://reviews.llvm.org/D23376
llvm-svn: 278772
Summary: This will allow for the sanitizers to be used when c++ abi is unavailable.
Reviewers: samsonov, beanz, pcc, rnk
Subscribers: llvm-commits, kubabrecka, compnerd, dberris
Differential Revision: https://reviews.llvm.org/D23376
llvm-svn: 278764
/Zi creates a separate PDB that we're supposed to pass along with our
sanitizer libraries, but the object library compilation rules aren't set
up to handle that. Rather than set that up, put the debug info in the
object files the way every other platform does it with /Z7.
llvm-svn: 277406
This reverts commit 23240d8de38c79220a888f645a1f4b686bfb87c6.
Broke the build because the build bots haven't gotten the latest config
from zorg yet.
llvm-svn: 276847
Summary:
This is a fixed-up version of D21612, to address failure identified post-commit.
Original commit description:
This patch implements the initialisation and patching routines for the XRay runtime, along with the necessary trampolines for function entry/exit handling. For now we only define the basic hooks for allowing an implementation to define a handler that gets run on function entry/exit. We expose a minimal API for controlling the behaviour of the runtime (patching, cleanup, and setting the handler to invoke when instrumenting).
Fixes include:
- Gating XRay build to only Linux x86_64 and with the right dependencies in case it is the only library being built
- Including <cstddef> to fix std::size_t issue
Reviewers: kcc, rnk, echristo
Subscribers: mehdi_amini, llvm-commits
Differential Revision: https://reviews.llvm.org/D22611
llvm-svn: 276251
Should fix the Windows buildbots, and maybe some other non-Linux Unix
bots too.
XRay currently depends on sanitizer_common, so associate it with the
"build sanitizers" option and remove the option for separately
controlling the XRay build.
llvm-svn: 276124
Summary:
This patch implements the initialisation and patching routines for the XRay runtime, along with the necessary trampolines for function entry/exit handling. For now we only define the basic hooks for allowing an implementation to define a handler that gets run on function entry/exit. We expose a minimal API for controlling the behaviour of the runtime (patching, cleanup, and setting the handler to invoke when instrumenting).
Depends on D19904
Reviewers: echristo, kcc, rnk
Subscribers: rnk, mehdi_amini, llvm-commits
Differential Revision: https://reviews.llvm.org/D21612
llvm-svn: 276117
The triple must be parsed in base-config-ix.cmake.
Otherwise, the cmake variable ANDROID won't be set and this
will confuse cmake to build unsupported targets targeted for
android.
Diferential revision: http://reviews.llvm.org/D21474
llvm-svn: 273914
This change is mostly to enable me to do some experimentation with building runtime libraries (See: D20992). It is harmless because unset variables evaluate to false in conditional expressions.
llvm-svn: 273320
- Fixes warnings about the ignored -fms-compatibility-version flag.
- Fixes warnings about overriding /W4 with /W3 and back.
- Fixes a warning where PREFETCH() expanded to nothing in a braceless if
block.
llvm-svn: 273021
Now that we're on CMake 3.4.3 this stuff isn't needed anymore.
The cmake_2_8_12_* variables were unused in Compiler-RT, and the policies being set to NEW are all NEW by default now.
llvm-svn: 272313
Using -fomit-frame-pointer sometimes makes a crash log miss some frames. Let's not use this optimization in debug builds.
Differential Revision: http://reviews.llvm.org/D20425
llvm-svn: 270376
Summary:
This patch adds support for building lib/builtins without a fully functioning toolchain. It allows you to bootstrap a cross-compiler, which previously couldn't be done with CMake.
This patch contains the following specific changes:
* Split builtin-specific code out of config-ix.cmake into builtin-config-ix.cmake
* Split some common CMake functionality needed by both builtins and sanitizers into base-config-ix.cmake
* Made lib/builtins/CMakeLists.txt able to be a top-level CMake configuration
I have tested this on Darwin targeting embedded Darwin, and on FreeBSD x86_64 targeting FreeBSD AArch64.
This patch depends on http://reviews.llvm.org/D19692, and is the last part of http://reviews.llvm.org/D16653.
Reviewers: samsonov, iains, jroelofs
Subscribers: compnerd, aemerson, tberghammer, danalbert, srhines, emaste, llvm-commits
Differential Revision: http://reviews.llvm.org/D19742
llvm-svn: 268977
ASan interceptors contain local statics which run before the CRT is
initialized. Thread-safe statics appear to rely on CRT-internal state,
and will crash without this flag.
llvm-svn: 263979
Summary: Building the sanitizer libraries without rpaths causes all sorts of problems when you try to use them. This simple fix should make it all work.
Reviewers: samsonov, zaks.anna
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D17556
llvm-svn: 261797
We already disabled various tests relying on C++ ABI knowledge, but we
still tried to build in this configuration on Windows which was a
mistake.
Fixes PR26415.
llvm-svn: 259388
* Adds COMPILER_RT_EXTERNALIZE_DEBUGINFO option
* On Darwin this results in calling dsymutil and strip after linking
* This generates an error on non-darwin platforms, matching the LLVM behavior
llvm-svn: 254643
There are situations where a user may want to build only the compiler-rt builtins, or only the sanitizer runtimes. This exposes options to do that. Both default to On, so there should be no implicit change in behavior.
llvm-svn: 247607
Instead, assume we're going to target triple specified by
COMPILER_RT_DEFAULT_TARGET_TRIPLE and build runtimes for this triple
(and hope that the host compiler can target them).
This will help users that use cross-compiler on their host to build
Clang that would work on a different architecture. This will also come in
handy if one would want to configure several compiler-rt build trees on
the same host, using just-built Clang that can target many
architectures.
This doesn't change the behavior in the default build configuration.
llvm-svn: 247099
Summary:
This is a reunification of three separate reviews D11073, D11082, D11083.
Having them separate was not constructive even though the patches were smaller because it led to fragmented conversations, and this is really all about one change.
This patch incorporates feedback from samsonov, and refactors the hacky darwin code out of the root CMakeLists.txt and int config-ix.cmake.
Reviewers: zaks.anna, bogner, kubabrecka, chandlerc, samsonov
Subscribers: jevinskie, filcab, llvm-commits
Differential Revision: http://reviews.llvm.org/D11820
llvm-svn: 244948
We will use this for ASan on Windows soon. When the ELF port of LLD
matures, we can add other sanitizer integration tests to make sure they
work with LLD.
llvm-svn: 244549
This applies default compiler flags to .S files, in particular removing
the "-pedantic" option, which is desirable because there is nothing to
reasonably warn about; and the only thing that gcc warns about is that
you allegedly can't correctly invoke GLUE2 in lib/builtins/assembly.h
on platforms for which USER_LABEL_PREFIX is the empty string.
In the gcc bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33305 that
added the warning, a commenter notes that giving a macro of zero characters
to another macro is not precisely the same as failing to supply an argument,
and "there is a widespread belief in C++ community that such usage is valid".
Unfortunately the only way to silence the warning is to avoid -pedantic.
Differential Revision: http://reviews.llvm.org/D10713
llvm-svn: 243446
Summary:
Although we assume that we can always target host triple, relax
this check to avoid failing at configure-time for cases when we are
not able to correctly infer/verify host triple for some reasons.
See http://llvm.org/bugs/show_bug.cgi?id=24222 for more details.
Reviewers: hans
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D11496
llvm-svn: 243170
The is so that we can avoid using libgcc and use compiler-rt with
mingw-w64.
Related driver patch
http://reviews.llvm.org/D11077
I have tested this with mingw-w64 and everything seems to be in order.
I also sent this patch to the mingw-w64 mailing list for them to look at.
Patch by Martell Malone.
Differential Revision: http://reviews.llvm.org/D11085
llvm-svn: 242539
Some users may need to configure Clang/compiler-rt with
-DMACOSX_DEPLOYMENT_TARGET=10.6, as they expect Clang to produce working
(non-sanitized) binaries on 10.6. In this case they would need to
additionally provide -DSANITIZER_MIN_OSX_VERSION=10.7 to mark
that sanitizer runtimes may only be used on 10.7+ (where they are
supported).
llvm-svn: 242363
Specifically:
- Start using %expect_crash.
- Provide an implementation of __ubsan::getDynamicTypeInfoFromVtable
for the Microsoft C++ ABI. This is all that is needed for CFI
diagnostics; UBSan's -fsanitize=vptr also requires an implementation of
__ubsan::checkDynamicType.
- Build the sanitizer runtimes against the release version of the C
runtime, even in debug builds.
- Accommodate demangling differences in tests.
Differential Revision: http://reviews.llvm.org/D11029
llvm-svn: 241745
Specifically:
- Disable int128 tests on Windows, as MSVC cl.exe does not support
int128, so we might not have been able to build the runtime
with int128 support.
- XFAIL the vptr tests as we lack Microsoft ABI support.
- XFAIL enum.cpp as UBSan fails to add the correct instrumentation code
for some reason.
- Modify certain tests that build executables multiple times to use
unique names for each executable. This works around a race condition
observed on Windows.
- Implement IsAccessibleMemoryRange for Windows to fix the last
misaligned.cpp test.
- Introduce a substitution for testing crashes on Windows using
KillTheDoctor.
Differential Revision: http://reviews.llvm.org/D10864
llvm-svn: 241303
-fsanitize=vptr is a UBSan feature that doesn't work on older Mac OS X
versions, and we don't want to penalize users that use modern OS with
default configuration. Those who want to target older OS versions, can
specify that versions explicitly.
llvm-svn: 240688
Summary:
This patch implements step 1 from
https://llvm.org/bugs/show_bug.cgi?id=23539#c10
I'd appreciate if you could test it on Mac OS and verify that parts of UBSan
runtime that reference C++ ABI symbols are properly excluded, and fix ASan/UBSan
builds.
Test Plan: regression test suite
Reviewers: thakis, hans
Subscribers: llvm-commits, zaks.anna, kubabrecka
Differential Revision: http://reviews.llvm.org/D10621
llvm-svn: 240617
Make sure that sanitizer runtimes target OS X version provided in
-mmacosx-version-min= flag. Enforce that it should be at least 10.7.
llvm-svn: 240356
This patch adds runtime support for the Safe Stack protection to compiler-rt
(see http://reviews.llvm.org/D6094 for the detailed description of the
Safe Stack).
This patch is our implementation of the safe stack on top of compiler-rt. The
patch adds basic runtime support for the safe stack to compiler-rt that
manages unsafe stack allocation/deallocation for each thread.
Original patch by Volodymyr Kuznetsov and others at the Dependable Systems
Lab at EPFL; updates and upstreaming by myself.
Differential Revision: http://reviews.llvm.org/D6096
llvm-svn: 239763
Summary:
This change takes darwin-specific goop that was scattered around CMakeLists files and spread between add_compiler_rt_object_library and add_compiler_rt_darwin_object_library and moves it all under add_compiler_rt_object_library.
The goal of this is to try to push platform handling as low in the utility functions as possible.
Reviewers: rnk, samsonov
Reviewed By: rnk, samsonov
Subscribers: rnk, rsmith, llvm-commits
Differential Revision: http://reviews.llvm.org/D10250
llvm-svn: 239498
This reverts part of r237808.
The CMP0057 warnings came from an old development build of CMake that
nobody else has. We don't need the cruft.
llvm-svn: 237819
Fix a trivial instance of CMP0054 that came up on llvmdev.
The other warnings were CMP0057, which is about using the same file as a
MAIN_DEPENDENCY multiple times. The old behavior hasn't been a problem
yet, so I silenced the warning and filed PR23595 to document the issue
if someone cares.
llvm-svn: 237808
Summary:
Change the way we use ASan and UBSan together. Instead of keeping two
separate runtimes (libclang_rt.asan and libclang_rt.ubsan), embed UBSan
into ASan and get rid of libclang_rt.ubsan. If UBSan is not supported on
a platform, all UBSan sources are just compiled into dummy empty object
files. UBSan initialization code (e.g. flag parsing) is directly called
from ASan initialization, so we are able to enforce correct
initialization order.
This mirrors the approach we already use for ASan+LSan. This change
doesn't modify the way we use standalone UBSan.
Test Plan: regression test suite
Reviewers: kubabrecka, zaks.anna, rsmith, kcc
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8646
llvm-svn: 233861
For OS X builds, both Make and CMake, let's be very explicit about using
libc++ and libc++abi with:
1) -stdlib=libc++ in CFLAGS and LDFLAGS for all platforms
2) -lc++ in LDFLAGS for all platforms
3) switch from -undefined dynamic_lookup to -lc++abi for UBSan in
Makefile-based builds
Reviewed at http://reviews.llvm.org/D8617
llvm-svn: 233215
Summary:
Switch to shared library for UBSan. Add support for building
UBSan on OSX and iossim by cargo-culting ASan build rules.
Test Plan: regression test suite
Reviewers: zaks.anna, kubabrecka
Subscribers: llvm-commits
Differential Revision: http://reviews.llvm.org/D8473
llvm-svn: 233036
The SDK is insufficient to really build much. The builtins can be built
standalone now which is what the stub SDK was meant to permit. Remove the
unnecessary files.
llvm-svn: 230869
On OS X, if you don't have a full Xcode installation, but just the Command Line Tools package, xcrun and xcodebuild don't return a valid SDK root path. In these cases, let's use "/" as the SDK root (which is where the headers and libraries are installed).
Reviewed at http://reviews.llvm.org/D7641
llvm-svn: 230847
In both CMake and Makefiles, we are inconsistent about the use of libstdc++ vs. libc++, SDKs and minimum deployment targets for OS X. Let's fix the detection of SDKs, and let's explicitely set that we link against libc++ and mmacosx-version-min is 10.7.
llvm-svn: 227509
The new parser is a lot stricter about syntax, reports unrecognized
flags, and will make it easier to implemented some of the planned features.
llvm-svn: 226169
Use unwind.h to get the declarations for unwinding interfaces. This header is
already provided by clang and gcc, so this adds no additional dependencies for
building the builtins library. It avoids the duplication which may drift over
time though.
llvm-svn: 225990
LLVM_LIBDIR_SUFFIX variable to one place in the cmake file.
This is all that I had to do to get everything from compiler-rt working
for me, but there may be more work required if folks are relying on more
parts of compiler-rt. Notably, I'm mostly using it for the sanitizers.
llvm-svn: 224928
The compiler-rt CMake build currently uses -gline-tables-only for all builds. While this makes the debugger correctly map source files, debugging of the runtime libraries in general is pretty tough, because you don't see any local variables, parameters, etc. Let's allow emitting full debugging info by setting COMPILER_RT_DEBUG=ON.
Reviewed at http://reviews.llvm.org/D6764
llvm-svn: 224749
This commit changes the strategy for building shared ASan runtime
and the way we test it:
- COMPILER_RT_BUILD_SHARED_ASAN CMake option is removed. We now
always build shared ASan runtime (it is the default on Android,
Windows and Mac, and not the default on Linux and FreeBSD).
- Platforms, which use static runtime by default now have
"check-asan-dynamic" testsuite. This testsuite contains instrumented
unit tests, and ASan lit tests, and runs them with shared ASan
runtime. This testsuite is *not* a part of "check-asan" and
*not* a part of "check-all", as adding 1000 more test cases, which
duplicate existing ones is costly. However, you're welcome to
add this command to your buildbot.
llvm-svn: 224470
The minimal fake SDK was very useful in allowing us to build for all
Darwin platforms without needing access to the real SDKs, but it did
not support building any of the sanitizer runtimes. It's important to
fix that. As a consequence, if you don't have the iOS SDKs installed,
we will now skip building the iOS-specific libclang_rt libraries.
rdar://problem/18825276
llvm-svn: 221621
C4146: 'unary minus operator applied to unsigned type, result still unsigned'
C4291: ''declaration' : no matching operator delete found; memory will not be freed if initialization throws an exception'
C4800: ''type' : forcing value to bool 'true' or 'false' (performance warning)'
llvm-svn: 220507
* Detect Android toolchain target arch and set correct runtime library name.
* Merged a lot of Android and non-Android code paths.
* Android is only supported in standalone build of compiler-rt now.
* Linking lsan-common in ASan-Android (makes lsan annotations work).
* Relying on -fsanitize=address linker flag when building tests (again,
unification with non-Android path).
* Runtime library moved from lib/asan to lib/linux.
llvm-svn: 218605
Petr Hosek