Commit Graph

322 Commits

Author SHA1 Message Date
Joerg Sonnenberger 31057d618e Consistent spelling of names.
llvm-svn: 192180
2013-10-08 12:35:07 +00:00
Nick Kledzik 312fcd0e1c libcxxabi contains the runtime support for C++. But, as some folks have
realized, it is not complete.  It relies on some _Unwind_* functions to be
supplied by the OS. That means it cannot be ported to platforms that don’t 
already have an unwinder.  

Years ago Apple wrote its own unwinder for MacOSX and iOS.  To make libcxxabi 
complete, Apple has decided the source code for its unwinder can be contributed
to the open source LLVM libcxxabi project, with a dual licensed under LLVM 
and MIT license.

So, I’ve spent some time cleaning up the sources to make them conform with 
LLVM style and to conditionalize the sources in a way that should make it 
easier to port to other platforms.  The sources are in a separate "Unwind" 
directory under "src" in libcxxabi.  

Background:
Most architectures now use "zero cost" exceptions for C++.  The zero cost means
there are no extra instructions executed if no exceptions are thrown.  But if 
an exception is thrown, the runtime must consult side tables and figure out how
to restore registers and "unwind" from the current stack frame to the catch 
clause.  That ability to modify the stack frames and cause the thread to resume 
in a catch clause with all registers restored properly is the main purpose 
of the unwinder.

This unwinder has two levels of API.  The high level APIs are the _Unwind_* 
functions which the cxa_* exception functions in libcxxabi require.  The low 
level APIs are the unw_* functions which are an interface defined by the the 
old HP libunwind project (which shares no code with this unwinder).

llvm-svn: 192136
2013-10-07 21:39:41 +00:00
Marshall Clow 46c9950f48 Adding bad_array_length to libc++abi
llvm-svn: 190479
2013-09-11 01:42:02 +00:00
Marshall Clow 9735f1a06b Add ability to set OPTIONS for compile
llvm-svn: 190371
2013-09-09 23:53:08 +00:00
Jean-Daniel Dupas 8d362a999e Change the two last remaining _LIBCPP_CANTTHROW to _NOEXCEPT
llvm-svn: 189603
2013-08-29 19:19:27 +00:00
Howard Hinnant 59a5a956f5 Propagate the removal of _LIBCPP_CANTTHROW (r189046) to libcxxabi. This fixes http://llvm.org/bugs/show_bug.cgi?id=16996.
llvm-svn: 189194
2013-08-25 17:00:57 +00:00
Howard Hinnant b162939c1a tip-of-trunk clang has corrected some access checks for special members in a virtual inheritance hierarchy. Change a few private inheritances to protected. This change will not impact what the test was testing. This fixes http://llvm.org/bugs/show_bug.cgi?id=16753.
llvm-svn: 187429
2013-07-30 19:00:45 +00:00
Howard Hinnant 04c4cffbe1 I had a buffer mismanagement bug in the demangler.
llvm-svn: 187255
2013-07-26 22:14:53 +00:00
Howard Hinnant ef93bc1c8a Updated CREDITS.TXT
llvm-svn: 185464
2013-07-02 19:01:59 +00:00
Howard Hinnant 60c16eb7f5 I'd no sooner made the last commit when Matthew Dempsky sent me another test case that led me to yet another closely related test case that the current design could not handle. I've now changed the way forward references are handled completely. It wasn't that much code to change. The demangler, when confronted with a forward reference to a template parameter, now parses things twice. During the second parse, all forward references are remembered from the first parse. Test suite updated with new case.
llvm-svn: 184672
2013-06-23 19:52:45 +00:00
Howard Hinnant cde9e006d8 After a private conversation with Arthur O'Dwyer, and a good night's sleep, I believe this fix is a better fix than what I committed in r184656 yesterday. I've basically moved the checking for '`' from the start of the demangling process to the end of it. In the process I discovered that one of the test cases no longer demangled to the expected string. After further investigation I believe this case to not be a valid mangled string, and so I moved the test case to the 'invalid cases'. The reason I believe it is invalid is that it should use T_ instead of T0_ to index the template parameter.
llvm-svn: 184668
2013-06-23 17:14:35 +00:00
Howard Hinnant ae10f9d45e Filter out '`' in mangled strings and reject them as invalid if found.
llvm-svn: 184656
2013-06-23 03:36:38 +00:00
Howard Hinnant 72a54eab35 I created a random mangled name generator and have thrown about 200 million random strings at the demangler. I succeeded in crashing it twice more and those crashers have been fixed and the test suite updated with the crash cases.
llvm-svn: 184562
2013-06-21 17:04:24 +00:00
Howard Hinnant 8935442538 Another demangler crasher. Updated test suite to prevent regression.
llvm-svn: 184477
2013-06-20 21:49:34 +00:00
Howard Hinnant 763e591461 Protect against invalid mangled names. Add test suite for invalid mangled names.
llvm-svn: 184394
2013-06-20 01:55:07 +00:00
Howard Hinnant b076753454 Demangle objc mangling implemented in r184250
llvm-svn: 184301
2013-06-19 13:43:18 +00:00
Howard Hinnant 80fe668394 Tweaks/cleanups provided by Matthew Dempsky
llvm-svn: 184118
2013-06-17 20:25:21 +00:00
Howard Hinnant 862c4a06ee Demangler update: This now demangles many more (all?) C++11 symbols. Demangler tests updated.
llvm-svn: 184097
2013-06-17 18:10:34 +00:00
Howard Hinnant f2ca35cd79 Add capability to demangle invocation functions for ObjC blocks.
llvm-svn: 179208
2013-04-10 19:44:03 +00:00
Howard Hinnant be2eced483 Bruce Mitchener: Typo fixes.
llvm-svn: 175275
2013-02-15 15:48:49 +00:00
Howard Hinnant 2b853bf65f Partially revert r152770. That commit moved the default handlers to their own file. But it also did some refactoring. It is the latter that is being reverted. The refactoring had accidentally removed the required effect that the default unexpected_handler calls std::terminate(), which is a visible effect.
llvm-svn: 174532
2013-02-06 19:29:55 +00:00
NAKAMURA Takumi 43632a26a5 Update the copyright coredits -- Happy new year 2013!
llvm-svn: 171342
2013-01-01 10:00:19 +00:00
Daniel Malea f32048d26b Rename class __lambda_node to ___lambda_node to fix compile failure with gcc 4.6 and 4.7
- using "__lambda_node" causes internal compiler error in newer GCC versions

llvm-svn: 169402
2012-12-05 18:55:49 +00:00
Howard Hinnant c1c87c15f2 __list::ends_with_template was giving the wrong answer for empty lists. And __parse_unnamed_type_name wasn't properly handling the list of paramters and was not safe against incorrectly mangled lambdas (running past last).
llvm-svn: 169022
2012-11-30 18:43:50 +00:00
Howard Hinnant 7166bff4ff Remove aborts under __dynamic_cast which were under _LIBCXX_DYNAMIC_FALLBACK. Change all type_info comparisons to use an inlined is_equal helper. However no change in functionality for this latter change at this time. This is just to encapsulate the comparison and make it a little easier to switch back and forth for testing/debugging.
llvm-svn: 168052
2012-11-15 18:00:42 +00:00
Howard Hinnant fe4d464f52 Update CREDIT.TXT
llvm-svn: 167847
2012-11-13 15:57:18 +00:00
Howard Hinnant 70abebed37 Wen-Han Gu: Fix for http://llvm.org/bugs/show_bug.cgi?id=14312 Exception Table out-of-range but still keep walking.
llvm-svn: 167733
2012-11-12 18:19:15 +00:00
Howard Hinnant c33e98ca05 Make the type_info for __shim_type_info visible. This should address some failing dynamic_casts that a few applications are doing on the type_info hierarchy.
llvm-svn: 165883
2012-10-13 18:45:59 +00:00
Micah Villmow fb89f27a8f Move TargetData to DataLayout.
llvm-svn: 165397
2012-10-08 16:29:26 +00:00
Howard Hinnant 538fe8f35b Set up code under _LIBCXX_DYNAMIC_FALLBACK which is off by default. For a full description of _LIBCXX_DYNAMIC_FALLBACK, see src/private_typeinfo.cpp.
llvm-svn: 164863
2012-09-28 22:43:50 +00:00
Howard Hinnant 785a8721d2 Improve the diagnostic messages on dynamic_cast.
llvm-svn: 164833
2012-09-28 17:58:48 +00:00
Howard Hinnant 2d0352cbf8 Two changes: 1) I still didn't have the ABI correct to match the gcc-4.2 std::string under the exception classes. I think the changes to stdexcept.cpp have got that down now. 2) On Apple platforms I'm seeing visibility bugs in applications with respect to type_info's being hidden. This is causing dynamic_cast to malfunction because there are multiple type_info's running around for one type within an application, making dynamic_cast believe that one type is actually multiple types. As a stop gap measure I'm trying to detect this error, print out an error message, but continue with the most likely desired result. This is all under __APPLE__. This behavior can be expanded to other platforms if desired.
llvm-svn: 164809
2012-09-28 00:05:34 +00:00
Marshall Clow 8493cad160 Updating email address
llvm-svn: 164490
2012-09-24 14:27:24 +00:00
Howard Hinnant 128ec49e29 Rename class __lambda to __lambda_node to avoid clash with gcc. This fixes http://llvm.org/bugs/show_bug.cgi?id=13889
llvm-svn: 164405
2012-09-21 19:21:37 +00:00
Howard Hinnant ed3d690f68 Tweak use of dlopen to be a little more correct and higher performing.
llvm-svn: 164404
2012-09-21 19:12:56 +00:00
Howard Hinnant e115af2777 I've added Apple-only behavior that looks for libstdc++ in the same process and if found, checks the string stored in <stdexcept> exception objects to see if it is the gcc empty string singleton before manipulating the reference count. This is done so that if such an exception is created with a zero-length string in libstdc++, libc++abi won't try to delete the memory. This is part of a ongoing process to make libc++ exceptions ABI-compatible with libstdc++-4.2 exceptions, to the point that each library can catch exceptions thrown by the other. If other parties would also like this behavior, the #if __APPLE__ can be broadened.
llvm-svn: 164170
2012-09-18 21:34:12 +00:00
Howard Hinnant 6aa048efc9 Specifically disallow primary-expressions of the form LT_... on the basis of this decition: http://sourcerytools.com/pipermail/cxx-abi-dev/2011-August/002422.html . Failure to disallow this was causing infinite recursion in the demangler when these symbols show up due to mangling bugs. This patch causes the demangler to return an invalid mangled name result rather than crash in infinite recursion.
llvm-svn: 163859
2012-09-13 23:49:59 +00:00
Howard Hinnant 2c2b55f27f Change size of reference count field in __libcpp_nmstr from 32 bits to 64 bits for 64 bit targets. This is controls the data layout of all exceptions defined in <stdexcept>. This aligns the ABI with that of gcc-4.2.
llvm-svn: 161496
2012-08-08 16:15:16 +00:00
Howard Hinnant 757640b156 Fixes apple: #12020687. This was a problem in the demangler with template
substitution forward references.  That is, sometimes a mangled name refers to
a substitution that hasn't yet been defined.  The demangler was derferencing a
null pointer in this case because it wasn't properly guarded against a
forward reference.  Test case added to catch this problem.

llvm-svn: 161267
2012-08-03 22:02:07 +00:00
Howard Hinnant 3a86b142a1 Update status.
llvm-svn: 161221
2012-08-02 22:06:41 +00:00
Howard Hinnant fdfcfcf670 Update CREDITS.TXT
llvm-svn: 161129
2012-08-01 19:24:04 +00:00
Howard Hinnant b2a9cee678 Erik Olofsson: This patch adds support for lambda demangling. I fixed this because it crashed lldb when it tried to demangle the added test.
Not sure how it should identify the lambda so that might need changing from the current 'lambdax'::  Howard:  Please patch CREDITS.TXT.

llvm-svn: 161125
2012-08-01 18:56:46 +00:00
Howard Hinnant a8c5d770f9 Andrew Morrow: Mainline clang seems to have recently become more strict about the
consistent application of visibility attributes, which causes some new
breakage in libcxxabi:

In file included from src/libcxxabi/src/cxa_default_handlers.cpp:19:
src/libcxxabi/src/private_typeinfo.h:123:23: error: visibility does
not match previous declaration
class __attribute__ ((__visibility__(default))) __class_type_info
                     ^
src/libcxxabi/src/private_typeinfo.h:19:13: note: previous attribute is here
#pragma GCC visibility push(hidden)
           ^
1 error generated.

The forward declaration of __class_type_info is picking up hidden
visibility from the #pragma, which conflicts with the default
visibility applied when the class is later fully declared. I'm
assuming that the full declaration has it right (and that the
diagnostic is correct), so the attached patch applies the default
visibility attribute to the forward declaration.

llvm-svn: 160933
2012-07-29 20:41:19 +00:00
Howard Hinnant 95d917f8ee Andrew Morrow: The variable 't1' on line 10188 of cxa_demangle.cpp is uninitialized
which generates -Wsometimes-uninitialized.  Howard:  The only thing this patch is missing is an update to CREDITS.TXT.

llvm-svn: 160932
2012-07-29 16:14:52 +00:00
Sylvestre Ledru 0527b8f942 add a link to the libc++ website
llvm-svn: 160553
2012-07-20 17:21:42 +00:00
Richard Smith 4c50ea27bf Add missing #include <stdlib.h> into test which uses ::exit.
llvm-svn: 160039
2012-07-11 09:37:56 +00:00
Howard Hinnant 7f53a5da57 Don't dereference root in __parse_ctor_dtor_name unless it is known to not be null.
llvm-svn: 158556
2012-06-15 21:57:51 +00:00
Howard Hinnant ba2e8aeda5 Fix bug in cxa_demangle involving template substitution.
llvm-svn: 155994
2012-05-02 15:38:11 +00:00
Howard Hinnant 9de0b35648 Make __cxa_new_handler un-mangled
llvm-svn: 155763
2012-04-28 16:46:04 +00:00
Howard Hinnant 2a9c509c7e Changed 'cause' from 'terminate' to 'uncaught' in default_terminate_handler
llvm-svn: 155452
2012-04-24 17:41:51 +00:00
Howard Hinnant b54f86aa9d Richard Smith: __int128 is a GNU keyword which clang 3.1 supports. This usage of it as an identifier will need to be renamed.
llvm-svn: 155044
2012-04-18 20:55:06 +00:00
Howard Hinnant e59dbd7b82 I would really like to write the handlers in terms of C++11 atomics. This would give us the best performance, portablity, and safety tradeoff. Unfortunately I can not yet do that. So I've put the desired code in comments, and reverted the handler getters to the slower but safer legacy atomic intrinsics.
llvm-svn: 153041
2012-03-19 16:56:51 +00:00
Howard Hinnant 4ac72dd982 I've moved __cxa_terminate_handler, __cxa_unexpected_handler and __cxa_new_handler from the public header cxxabi.h into the private header cxa_handlers.hpp. During this move I've also moved them from namespace __cxxabiapple into the global namespace. They are, and have always been extern C and so the namespace (or lack of it) does not affect their ABI. In general external clients should not reference these symbols. They are atomic variables and will be changing into C++11 atomic variables in the future. However for those few clients who really need access to them, their name, mangling, size, alignment and layout will remain stable. You just may need your own declaration of them. Include guards have been added to the private header cxa_exception.hpp. The private header cxa_default_handlers.hpp has been removed and the default handlers are now file-static. Include guards have been added to the private header cxa_handlers.hpp.
llvm-svn: 153039
2012-03-19 16:20:34 +00:00
Howard Hinnant 0f73197364 Arm fixes in cxa_personality.cpp and a little refactoring.
llvm-svn: 152966
2012-03-17 00:10:52 +00:00
Dave Zarzycki d6533ccd48 Less lame "concurrency" support
These APIs aren't thread safe, but they're pretending to be. Let's at
least make the getter as fast as they can be. The setters are a lost
cause unless the API can be fixed.

llvm-svn: 152786
2012-03-15 08:58:08 +00:00
Dave Zarzycki 13e35c086c Be friendly to when dead_strip doesn't work
Apple Radar: 11053417

llvm-svn: 152785
2012-03-15 08:58:06 +00:00
Nick Kledzik 778324abe4 move default handlers to their own file so they can be overridden at build time (dyld)
llvm-svn: 152770
2012-03-15 01:52:12 +00:00
Howard Hinnant ffa26667d9 Missed an underscore on the last commit.
llvm-svn: 152736
2012-03-14 19:39:50 +00:00
Howard Hinnant baae2be624 Enable __arm__ on apple
llvm-svn: 152735
2012-03-14 19:30:00 +00:00
Nick Kledzik 37cb6555f0 fix crash log magic
llvm-svn: 152693
2012-03-14 01:16:14 +00:00
Howard Hinnant 3bfc622bdb Enable / silence -Wunused-parameter.
llvm-svn: 152415
2012-03-09 18:01:37 +00:00
Howard Hinnant e6de8df54e Enable -Wstrict-aliasing=2 -Wstrict-overflow=4.
llvm-svn: 152338
2012-03-08 20:55:13 +00:00
Howard Hinnant 8292678017 Enable/silence -Wsign-compare.
llvm-svn: 152336
2012-03-08 20:51:01 +00:00
Howard Hinnant 71c4857a07 Enable/silence -Wsign-compare.
llvm-svn: 152335
2012-03-08 20:50:28 +00:00
Howard Hinnant 37c247c13c Enable/silence -Wmissing-field-initializers.
llvm-svn: 152334
2012-03-08 20:32:50 +00:00
Howard Hinnant 7cafb87441 Enable/silence -Wunused-variable.
llvm-svn: 152329
2012-03-08 20:23:24 +00:00
Howard Hinnant d121eb2c24 Enable/silence -Wconversion.
llvm-svn: 152328
2012-03-08 20:16:45 +00:00
Howard Hinnant 11dd38dab0 Enable/silence -Wshadow.
llvm-svn: 152325
2012-03-08 19:34:58 +00:00
Howard Hinnant 41bcf33c63 Enable/silence -Wsign-conversion.
llvm-svn: 152323
2012-03-08 18:45:24 +00:00
Howard Hinnant 20d6c14c88 First attempt at arm support.
llvm-svn: 151765
2012-02-29 22:14:19 +00:00
Howard Hinnant fdad25a40a Insert a couple of dummy virtual functions to ease low level binary compatibility with other low level tools.
llvm-svn: 151282
2012-02-23 21:09:29 +00:00
Howard Hinnant 2d809ac734 And the handlers should be extern C.
llvm-svn: 151261
2012-02-23 17:25:34 +00:00
Howard Hinnant 49f28b5a47 I had originally made the handler function pointers a static internal detail, not accessible to the outside world. I did this because they must be accessed in a thread-safe manner, and the library provides thread-safe getters and setters for these. However I am at least temporarily making them public and giving them the Apple-extension names. In the future these may disappear again, and I think that would probably be a good idea.
llvm-svn: 151256
2012-02-23 15:32:07 +00:00
Dave Zarzycki 3cd25390e5 Pedantic fix: missing newline at EOF
llvm-svn: 151132
2012-02-22 05:25:00 +00:00
Howard Hinnant 3e7d155768 Move typeinfos for exceptions in <stdexcept> to the abi
llvm-svn: 150834
2012-02-17 19:23:47 +00:00
Howard Hinnant 995fcc0d49 Add (reluctantly) a namespace alias for __cxxabiv1.
llvm-svn: 150828
2012-02-17 18:45:44 +00:00
Howard Hinnant d901bb4de4 Remove outdated information from comment.
llvm-svn: 150827
2012-02-17 18:45:04 +00:00
Howard Hinnant 71cf5ab0d3 __gxx_personality_v0 and __cxa_call_unexpected are complete on darwin and I *think* linux (not positive), but still unimplemented on arm.
llvm-svn: 149711
2012-02-03 20:53:52 +00:00
Howard Hinnant 92afda06d7 Pushed optimization back up. Crash disappeared with compiler upgrade. Assumed to be due to compiler bug.
llvm-svn: 149702
2012-02-03 18:36:36 +00:00
Howard Hinnant 31dea02601 corrected namespace in test
llvm-svn: 149635
2012-02-02 22:00:52 +00:00
Howard Hinnant eaa65afc7b Work on restricting symbol visibility.
llvm-svn: 149633
2012-02-02 20:47:28 +00:00
Howard Hinnant 90ef25c05e Add version number to this library so we can recognize when we're using it.
llvm-svn: 149632
2012-02-02 20:47:05 +00:00
Howard Hinnant 67e5863cd9 There's a crasher I need to track down, occurring at -O0.
llvm-svn: 149631
2012-02-02 20:42:31 +00:00
Marshall Clow a27b0cd8ee added const nullptr tests
llvm-svn: 149552
2012-02-01 22:27:24 +00:00
Marshall Clow e71ddf2fcb removed duplicated tests - Howard was quicker than me.
llvm-svn: 149545
2012-02-01 21:49:28 +00:00
Marshall Clow 62e0f4abf6 Added tests for catching const/non-const nullptr
llvm-svn: 149542
2012-02-01 21:37:24 +00:00
Howard Hinnant 60eaa49036 Add test for pointer qualification conversion.
llvm-svn: 149541
2012-02-01 21:25:40 +00:00
Howard Hinnant 30025116de Changed a TODO to a 'maybe some time in the future'.
llvm-svn: 149539
2012-02-01 21:12:07 +00:00
Howard Hinnant 8030b7f751 Removed DEBUG statements.
llvm-svn: 149538
2012-02-01 21:08:30 +00:00
Howard Hinnant 089123e65f Remove a TODO regarding where some can_catch are implemented. I opted to make can_catch pure virtual in the top __shim_type_info, and have each sub-class implement its own. There are some repeated definitions, but they are trivial.
llvm-svn: 149537
2012-02-01 21:06:46 +00:00
Howard Hinnant c325fa7705 Add some tests to test catching nullptr with pointers and member pointers. Tests are only activated if #if __has_feature(cxx_nullptr).
llvm-svn: 149536
2012-02-01 21:01:52 +00:00
Howard Hinnant 2d6810fbd6 Quash a TODO related to catching pointer-to-member. These tests fail on my copy of gcc-4.2. But I believe the tests to be correct (and they pass for libc++abi). I've enquired on the C++ standards mailing list for a clarification in case I'm wrong. So far I've gotten one response that agrees with me.
llvm-svn: 149534
2012-02-01 20:53:21 +00:00
Howard Hinnant a21f8c2acf Quash TODO regarding catch by function type. Add tests to back it up.
llvm-svn: 149530
2012-02-01 19:42:45 +00:00
Howard Hinnant 26ffb64177 Quash TODO regarding catch by array type. Add tests to back it up.
llvm-svn: 149527
2012-02-01 19:21:28 +00:00
Howard Hinnant 69a10f466b Removing a TODO: can_catch is fundamentally different than search_above_dst. can_catch is looking for an unamiguous public base class of a specific type, but at any address. search_above_dst is looking for an unambiguous public base class of a specific type, *and* at a specific address. Additionally can_catch is run for all types. search_above_dst is only run on class types. So these are only superficially similar. Not similar enough for resuse, at least without making the code unreadable.
llvm-svn: 149522
2012-02-01 18:52:35 +00:00
Howard Hinnant d0bfbb336f Teach exception_cleanup_func about dependent exceptions.
llvm-svn: 149520
2012-02-01 18:44:21 +00:00
Howard Hinnant 8aa78517ab Treat all exceptions except that the ones that this library throws as foreign. Even other C++ exceptions.
llvm-svn: 149518
2012-02-01 18:15:15 +00:00
Howard Hinnant 62efe0b062 Nothing but polishing comments.
llvm-svn: 149515
2012-02-01 16:56:40 +00:00
Howard Hinnant 4ca103d14c Move an error detector to a better place.
llvm-svn: 149513
2012-02-01 16:16:11 +00:00
Howard Hinnant 3b22c6c395 Here's a test for catching pointers.
llvm-svn: 149459
2012-02-01 00:22:38 +00:00
Howard Hinnant 372e2f4bd4 More test cases concentrating on catching class types.
llvm-svn: 149453
2012-01-31 23:52:20 +00:00
Howard Hinnant eedecf51bb Some unwinding test cases
llvm-svn: 149436
2012-01-31 21:58:58 +00:00
Howard Hinnant 310fcc749d Back the optimization down from -O3 to -Os. I'm getting an unexplained crasher on -O3. I've looked for a libc++abi bug and can't find one. I'm suspecting clang optimizer bug. But I don't have a good test case at the moment. Deferring investigation on this for now as I will soon be developing more and smaller tests.
llvm-svn: 149414
2012-01-31 20:22:59 +00:00
Howard Hinnant 3d97931a86 Drop the stress a notch on dynamic_cast_stress.cpp. Otherwise it occasionally causes clang to crash. Put a noexcept(false) on a throwing destructor in test_vector1.cpp. The test now passes for both C++03 and C++11 modes. Add testit script. All tests are now PASSING :-)
llvm-svn: 149413
2012-01-31 20:10:33 +00:00
Howard Hinnant f8d292eb08 Correct test bug.
llvm-svn: 149412
2012-01-31 20:01:06 +00:00
Howard Hinnant fe2052d635 Have the default unexpected/terminate handler output *demangled* names for the type of exception instead of the mangled name.
llvm-svn: 149409
2012-01-31 19:48:06 +00:00
Howard Hinnant 43f5fecdb5 Fix type-o in the comment of the last commit
llvm-svn: 149403
2012-01-31 19:05:08 +00:00
Howard Hinnant 6351792447 Found and fixed a bug in __cxa_call_unexpected. If the unexpected_handler rethrows the same exception then needed information gets overwritten in the original exception header. Therefore save it locally before executing the unexpected_handler.
llvm-svn: 149400
2012-01-31 18:57:20 +00:00
Howard Hinnant d96cac1282 Found and fixed bug in personality function: Don't dive into the action table if the action entry is zero.
llvm-svn: 149389
2012-01-31 17:15:14 +00:00
Howard Hinnant d6d4c25ef0 Minor bug fix in __cxa_call_unexpected. Changed std::terminate to detect a caught-but-unhandled exception, and choose the handler out of that if found.
llvm-svn: 149329
2012-01-31 01:51:15 +00:00
Howard Hinnant c9204f6bed Refactored personality function. Found one bug in scanning exception spec lists.
llvm-svn: 149272
2012-01-30 20:16:21 +00:00
Howard Hinnant 2c50972c32 Removed debugging print statements
llvm-svn: 149271
2012-01-30 20:13:37 +00:00
Howard Hinnant 47cb854818 Add a descriptive name for a constant. Also I'm at least temporarily waging war on throw specs, both old and new style. Except where we have already publicly exposed the throw spec, I'm getting rid of them. They may come back later. But they seem somewhat prone to cyclic dependencies here. The throw spec implies compiler generated code that this library has to jump to during stack unwinding. I'd like to minimize the possiblity that the code used to properly make that jump is itself creating such jumps.
llvm-svn: 149251
2012-01-30 16:07:00 +00:00
Howard Hinnant 3f0d2384aa Add -fstrict-aliasing -Wstrict-aliasing and change optimization from -Os to -O3
llvm-svn: 149250
2012-01-30 16:03:23 +00:00
Howard Hinnant 5bbc597f1e Put throw() clauses back on these functions in cxxabi.h. This header must be C++03 compatible and these throw specs are consistent with the current cxxabi.h that Apple ships.
llvm-svn: 149249
2012-01-30 16:02:11 +00:00
Howard Hinnant 9aa4684fbb Minor updates to a couple of comments.
llvm-svn: 149158
2012-01-28 00:34:46 +00:00
Howard Hinnant ece71ead6d Add a little paranoia for testing purposes.
llvm-svn: 149157
2012-01-28 00:32:31 +00:00
Howard Hinnant 805036cc83 Minor header fixups for test.
llvm-svn: 149156
2012-01-28 00:30:38 +00:00
Howard Hinnant 44e3703639 Silence a warning.
llvm-svn: 149155
2012-01-28 00:29:27 +00:00
Howard Hinnant ad048719a7 Sometimes it takes all day to write a decent comment. This is one of those times, and I'm still not quite sure I have them correct.
llvm-svn: 149154
2012-01-28 00:28:31 +00:00
Howard Hinnant 113cf60e0b These commits are intended to be temporary in nature and are to facilitate the testing of libc++abi.dylib at this point in time.
llvm-svn: 148967
2012-01-25 19:27:42 +00:00
Howard Hinnant db97064263 Add comment documenting extension behavior of __cxa_get_globals_fast().
llvm-svn: 148966
2012-01-25 19:19:13 +00:00
Howard Hinnant 5d6b9d28f7 cxa_guard.cpp didn't quite make it on the last commit: Restricted headers to cxa_guard.cpp and abort_messsage.h, and added a comment regarding reentrancy brought up by John McCall. Thanks John.
llvm-svn: 148965
2012-01-25 19:02:40 +00:00
Howard Hinnant 2449538500 Restricted headers to cxa_guard.cpp and abort_messsage.h, and added a comment regarding reentrancy brought up by John McCall. Thanks John.
llvm-svn: 148963
2012-01-25 18:50:55 +00:00
Howard Hinnant abc770690a By changing all of the throw() specs to noexcept I've been able to compile and link all of the source files into a dylib. Prior to this substitution the changed functions were calling __cxa_call_unexpected which isn't implemented yet. However in none of these cases do we actaully want __cxa_call_unexpected to be called. Primative buildit script added.
llvm-svn: 148880
2012-01-24 23:42:30 +00:00
Howard Hinnant 7fdfd5d269 Add some needed symbols in exception.cpp and eliminate dependence upon uncaught_exception() from cxa_vector.cpp. libc++abi is very nearly a self-contained (though not complete) library now.
llvm-svn: 148866
2012-01-24 21:48:10 +00:00
Howard Hinnant 73ab1864ef Marshall Clow reminded me that fallback_malloc.cpp was broken out for testing purposes. We've agreed to simply rename fallback_malloc.cpp to fallback_malloc.ipp. Thanks Marshall.
llvm-svn: 148863
2012-01-24 21:41:27 +00:00
Howard Hinnant 421bbe5cc5 Add some needed symbols to cxa_new_delete.cpp and put the display() stuff under #DEBUG (again).
llvm-svn: 148860
2012-01-24 21:35:18 +00:00
Howard Hinnant 378a59f15c Got fooled by fallback_malloc.cpp source file: it is really a private header. I've manually included it into the only place it is used: cxa_exception.cpp.
llvm-svn: 148854
2012-01-24 21:02:21 +00:00
Howard Hinnant 8b26c3713b Add new file for public type_info-related signatures
llvm-svn: 148853
2012-01-24 21:01:01 +00:00
Howard Hinnant 0d517a4278 CrashReporterClient.h is back, but this time protected with __has_include. Thanks for the suggestion Doug. The use is consistent with how the same header is used in llvm/lib/Support/PrettyStackTrace.cpp (though there autoconfig is used instead of __has_include).
llvm-svn: 148851
2012-01-24 19:58:25 +00:00
Howard Hinnant a9d8ec45f6 Remove dependence upon std::exception_ptr from the default_terminate_handler. Recovered the equivalent functionality at a lower level.
llvm-svn: 148830
2012-01-24 18:26:29 +00:00
Howard Hinnant 9e5d74b239 Forgot to include this file in the last commit: Move kOurExceptionClass and kOurDependentExceptionClass from source to header so that they can be used in multiple sources. This is a private header, these constants are not publicly exposed.
llvm-svn: 148829
2012-01-24 18:17:40 +00:00
Howard Hinnant 6830b2a493 Move kOurExceptionClass and kOurDependentExceptionClass from source to header so that they can be used in multiple sources. This is a private header, these constants are not publicly exposed.
llvm-svn: 148827
2012-01-24 18:15:20 +00:00
Howard Hinnant 82a39907f1 Removed reference to internal header
llvm-svn: 148763
2012-01-24 00:52:33 +00:00
Howard Hinnant e33b2f5c97 Changed my mind about __cxa_uncaught_exception and added it.
llvm-svn: 148754
2012-01-24 00:01:31 +00:00
Howard Hinnant bfbf700151 I renamed abort_message to be a C++ file to simplify my simplistic build script which I'm still working on. I also added a struct for the crash reporter on __APPLE__.
llvm-svn: 148752
2012-01-23 23:58:26 +00:00
Howard Hinnant fad744dd50 A lot of the code in cxa_exception.cpp depends on __cxa_get_globals_fast() returning null if __cxa_get_globals() hasn't been called yet. However it doesn't reliably do that, at least on OS X if __cxa_get_globals_fast() is called prior to pthread_key_create() running. Our choice is to either limit our use of __cxa_get_globals_fast() more than we have, or to have __cxa_get_globals_fast() initialize with pthread_key_create() if necessary. I chose the latter, and replaced pthread_once with a C++11 local static (which should do the same thing).
llvm-svn: 148750
2012-01-23 23:55:58 +00:00
Howard Hinnant 671caae892 Added missing #include
llvm-svn: 148749
2012-01-23 23:51:56 +00:00
Howard Hinnant 53418916fc I'm beginning to be able to throw/catch a wide variety of objects.
llvm-svn: 148713
2012-01-23 18:39:47 +00:00
Howard Hinnant 699692a04c Getting started on matching a thrown exception to a catch clause, and setting the adjusted pointer to the caught object appearing in the catch clause.
llvm-svn: 148666
2012-01-22 21:47:40 +00:00
Howard Hinnant afcf7ac5f6 I kept getting confused among the __cxa_exception*, the _Unwind_Exception* and the void* to the thrown object. So I've gone through these two files and attempted to institute a consistent variable naming scheme, and in a few instances, turned void* into a concrete* to have the type system help me out. No change in functionality for this commit is intended.
llvm-svn: 148663
2012-01-22 19:14:27 +00:00
Howard Hinnant 1a56ee3798 Add __shim_type_info which fits below std::type_info and above all of the other type_info-derived classes. This is where all of the virtual functions that serve as details of the inner-workings of type_info will live (safely hidden from public view). All type_info objects will be safely down-castable to __shim_type_info, so as to access implementation detail virtual functions. Also temporarily add some print/display statements to each type_info-derived class. This is in support of the continuing development on the personality function.
llvm-svn: 148647
2012-01-22 01:23:02 +00:00
Howard Hinnant 242566e552 Change header to generic, instead of implementation specific
llvm-svn: 148646
2012-01-22 01:19:20 +00:00
Howard Hinnant b24c9441d1 One more small optimization: Where possible, for loops that do a search and then try to break out of the loop early, eliminate the attempt to break out of the loop after the last search. And with that, I'm declaring __dynamic_cast done. Though if anyone sees any problems, has suggestions for improvements, or wants to contribute some test cases, that is certainly welcome feedback.
llvm-svn: 148246
2012-01-16 18:21:05 +00:00
Howard Hinnant 44a2895a03 Comment smithing. Changed some casts from C-style to C++. And added timings to all of the tests.
llvm-svn: 148241
2012-01-16 17:06:51 +00:00
Howard Hinnant 77fb8ab9f2 I think this is getting close on __dynamic_cast. There's been quite a bit of code rearrangement, renaming, and better commenting. This exercise has exposed and fixed a few more bugs. I've also added several more tests (there's definitely a need for more tests here).
llvm-svn: 148227
2012-01-16 00:13:46 +00:00
Howard Hinnant f55694af01 Two bug fixes, several clarifications, and a few comment updates.
llvm-svn: 148180
2012-01-14 14:15:43 +00:00
Howard Hinnant fcf732c7a6 A bug fix involving the updating of path_dst_ptr_to_static_ptr. Some minor code rearrangement optimizations (putting most likely 'if' first in an if-else series. And some major optimizations which involve stopping the search prior to an exhaustive walk over the entire tree. Some of these stops are because an ambiguity is detected earlier. And some of the short circuiting is due to the information from the bits __diamond_shaped_mask and __non_diamond_repeat_mask. The stress test checked in last night is now about 28% faster for the B<Width/2, Depth> -O3 case. I'm still playing with some more optimization possibilities but I'm not sure they will play out.
llvm-svn: 148153
2012-01-13 23:06:03 +00:00
Howard Hinnant 50f7eeec9d Enclosed is a stress test for dynamic_cast. It stresses both libc++abi, and clang itself. It creates a ridiculously large class hierarchy using variadic templates. You can specify both the width and depth of the class hierarchy. And you can specify whether the cast is to the actual run time type, or to an intermediate layer in the class. About 1/3 of the time I compile this, it crashes the compiler. There seems to be an uninitialized area of memory, and I'm probably blowing past an assumption on class hierarchy size within clang (and understandably so). I can get it work most of the time with a class hierarchy width of 20 and a depth of 7. I'm making timings with both -O3 and -Os, using both cast to root and cast to intermediate, on both libc++abi, and gcc's dynamic_cast. I've put the results in a comment/table at the bottom of the test.
llvm-svn: 148083
2012-01-13 01:22:31 +00:00