[libcxx-commits] [libcxxabi] [llvm] [ItaniumDemangle][test] Turn ItaniumDemangle tests into LLVM unit-tests (PR #137947)
via libcxx-commits
libcxx-commits at lists.llvm.org
Wed Apr 30 03:00:23 PDT 2025
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-libcxxabi
Author: Michael Buch (Michael137)
<details>
<summary>Changes</summary>
This patch turns the `libcxxabi/test/test_demangle.pass.cpp` into gtest unit-tests in `llvm/unittests/Demangle`. The main motivation for this is https://github.com/llvm/llvm-project/pull/137793, where we want to re-use the test-cases from the ItaniumDemangler to test our OutputBuffer implementation.
`libcxxabi/test/test_demangle.pass.cpp` now only tests the `__cxa_demangle` API surface, not the underlying ItaniumDemangle implementation.
---
Patch is 10.20 MiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/137947.diff
4 Files Affected:
- (modified) libcxxabi/src/demangle/README.txt (+3-4)
- (modified) libcxxabi/test/test_demangle.pass.cpp (+46-30405)
- (added) llvm/include/llvm/Testing/Demangle/DemangleTestCases.inc (+30219)
- (modified) llvm/unittests/Demangle/ItaniumDemangleTest.cpp (+178)
``````````diff
diff --git a/libcxxabi/src/demangle/README.txt b/libcxxabi/src/demangle/README.txt
index c3f49e57b8d16..23c8715725187 100644
--- a/libcxxabi/src/demangle/README.txt
+++ b/libcxxabi/src/demangle/README.txt
@@ -52,10 +52,9 @@ shared demangler library.
Testing
-------
-The tests are split up between libcxxabi/test/{unit,}test_demangle.cpp, and
-llvm/unittests/Demangle. The llvm directory should only get tests for stuff not
-included in the core library. In the future though, we should probably move all
-the tests to LLVM.
+The main ItaniumDemangle test-siute lives in llvm/unittests/Demangle/.
+The libcxxabi/test/{unit,}test_demangle.cpp test tests basic functionality
+of __cxa_demangle.
It is also a really good idea to run libFuzzer after non-trivial changes, see
libcxxabi/fuzz/cxa_demangle_fuzzer.cpp and https://llvm.org/docs/LibFuzzer.html.
diff --git a/libcxxabi/test/test_demangle.pass.cpp b/libcxxabi/test/test_demangle.pass.cpp
index 343885da3017a..52bc7879ccd16 100644
--- a/libcxxabi/test/test_demangle.pass.cpp
+++ b/libcxxabi/test/test_demangle.pass.cpp
@@ -6,6 +6,8 @@
//
//===----------------------------------------------------------------------===//
+// Tests for ItaniumDemangle live in llvm/unittests/Demangle
+
// This test is too big for most embedded devices.
// XFAIL: LIBCXX-PICOLIBC-FIXME
@@ -24,30357 +26,27 @@
#include <cxxabi.h>
#include <string>
-// Is long double fp80? (Only x87 extended double has 64-bit mantissa)
-#define LDBL_FP80 (__LDBL_MANT_DIG__ == 64)
-// Is long double fp128?
-#define LDBL_FP128 (__LDBL_MANT_DIG__ == 113)
-
-const char* cases[][2] = {
- // clang-format off
- {"_Z1A", "A"},
- {"_Z1Av", "A()"},
- {"_Z1A1B1C", "A(B, C)"},
- {"_Z1fDB3_", "f(_BitInt(3))"},
- {"_Z1fDU10_", "f(unsigned _BitInt(10))"},
- {"_Z1fIfEvDUstPT__", "void f<float>(unsigned _BitInt(sizeof (float*)))"},
- {"_Z1fIiEvDBstPT__", "void f<int>(_BitInt(sizeof (int*)))"},
- {"_Z4testI1A1BE1Cv", "C test<A, B>()"},
- {"_Z4testI1A1BET0_T_S3_", "B test<A, B>(A, A)"},
- {"_ZN1SgtEi", "S::operator>(int)"},
- {"_ZrsI1QEiT_i", "int operator>><Q>(Q, int)"},
- {"_ZN13dyldbootstrap5startEPK12macho_headeriPPKcl", "dyldbootstrap::start(macho_header const*, int, char const**, long)"},
- {"_ZN4dyld17getExecutablePathEv", "dyld::getExecutablePath()"},
- {"_ZN4dyld22mainExecutablePreboundEv", "dyld::mainExecutablePrebound()"},
- {"_ZN4dyld14mainExecutableEv", "dyld::mainExecutable()"},
- {"_ZN4dyld21findImageByMachHeaderEPK11mach_header", "dyld::findImageByMachHeader(mach_header const*)"},
- {"_ZN4dyld26findImageContainingAddressEPKv", "dyld::findImageContainingAddress(void const*)"},
- {"_ZN4dyld17clearErrorMessageEv", "dyld::clearErrorMessage()"},
- {"_ZN4dyld15getErrorMessageEv", "dyld::getErrorMessage()"},
- {"_ZN4dyld24registerUndefinedHandlerEPFvPKcE", "dyld::registerUndefinedHandler(void (*)(char const*))"},
- {"_ZN4dyld19openSharedCacheFileEv", "dyld::openSharedCacheFile()"},
- {"_ZN4dyld15setErrorMessageEPKc", "dyld::setErrorMessage(char const*)"},
- {"_ZN4dyld22registerRemoveCallbackEPFvPK11mach_headerlE", "dyld::registerRemoveCallback(void (*)(mach_header const*, long))"},
- {"_ZN4dyld13inSharedCacheEPKc", "dyld::inSharedCache(char const*)"},
- {"_ZN4dyld15runInitializersEP11ImageLoader", "dyld::runInitializers(ImageLoader*)"},
- {"_ZN4dyld27findCoalescedExportedSymbolEPKcPPKN11ImageLoader6SymbolEPPKS2_", "dyld::findCoalescedExportedSymbol(char const*, ImageLoader::Symbol const**, ImageLoader const**)"},
- {"_ZN4dyld22flatFindExportedSymbolEPKcPPKN11ImageLoader6SymbolEPPKS2_", "dyld::flatFindExportedSymbol(char const*, ImageLoader::Symbol const**, ImageLoader const**)"},
- {"_ZN4dyld15findLoadedImageERK4stat", "dyld::findLoadedImage(stat const&)"},
- {"_ZN4dyld24initializeMainExecutableEv", "dyld::initializeMainExecutable()"},
- {"_ZN4dyld4warnEPKcz", "dyld::warn(char const*, ...)"},
- {"_ZN4dyld29processDyldEnvironmentVaribleEPKcS1_", "dyld::processDyldEnvironmentVarible(char const*, char const*)"},
- {"_ZN4dyld3logEPKcz", "dyld::log(char const*, ...)"},
- {"_ZN4dyld6throwfEPKcz", "dyld::throwf(char const*, ...)"},
- {"_ZN4dyld9mkstringfEPKcz", "dyld::mkstringf(char const*, ...)"},
- {"_ZN4dyld14addMappedRangeEP11ImageLoadermm", "dyld::addMappedRange(ImageLoader*, unsigned long, unsigned long)"},
- {"_Z28coresymbolication_load_imageP25CSCppDyldSharedMemoryPagePK11ImageLoadery", "coresymbolication_load_image(CSCppDyldSharedMemoryPage*, ImageLoader const*, unsigned long long)"},
- {"_Z30coresymbolication_unload_imageP25CSCppDyldSharedMemoryPagePK11ImageLoader", "coresymbolication_unload_image(CSCppDyldSharedMemoryPage*, ImageLoader const*)"},
- {"_ZN4dyld18getCoalescedImagesEPP11ImageLoader", "dyld::getCoalescedImages(ImageLoader**)"},
- {"_ZN4dyld25findImageContainingSymbolEPKv", "dyld::findImageContainingSymbol(void const*)"},
- {"_ZN4dyld19registerAddCallbackEPFvPK11mach_headerlE", "dyld::registerAddCallback(void (*)(mach_header const*, long))"},
- {"_ZN4dyld14forEachImageDoEPFvP11ImageLoaderPvES2_", "dyld::forEachImageDo(void (*)(ImageLoader*, void*), void*)"},
- {"_ZN4dyld15getIndexedImageEj", "dyld::getIndexedImage(unsigned int)"},
- {"_ZN4dyld13getImageCountEv", "dyld::getImageCount()"},
- {"_ZN4dyld10validImageEPK11ImageLoader", "dyld::validImage(ImageLoader const*)"},
- {"_ZN4dyld30flatFindExportedSymbolWithHintEPKcS1_PPKN11ImageLoader6SymbolEPPKS2_", "dyld::flatFindExportedSymbolWithHint(char const*, char const*, ImageLoader::Symbol const**, ImageLoader const**)"},
- {"_ZN4dyld14loadFromMemoryEPKhyPKc", "dyld::loadFromMemory(unsigned char const*, unsigned long long, char const*)"},
- {"_ZN4dyld36registerImageStateBatchChangeHandlerE17dyld_image_statesPFPKcS0_jPK15dyld_image_infoE", "dyld::registerImageStateBatchChangeHandler(dyld_image_states, char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*))"},
- {"_ZN4dyld37registerImageStateSingleChangeHandlerE17dyld_image_statesPFPKcS0_jPK15dyld_image_infoE", "dyld::registerImageStateSingleChangeHandler(dyld_image_states, char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*))"},
- {"_ZN4dyld4haltEPKc", "dyld::halt(char const*)"},
- {"_ZN4dyld18fastBindLazySymbolEPP11ImageLoaderm", "dyld::fastBindLazySymbol(ImageLoader**, unsigned long)"},
- {"_ZN4dyld14bindLazySymbolEPK11mach_headerPm", "dyld::bindLazySymbol(mach_header const*, unsigned long*)"},
- {"_ZN4dyld14runTerminatorsEPv", "dyld::runTerminators(void*)"},
- {"_ZN4dyld11removeImageEP11ImageLoader", "dyld::removeImage(ImageLoader*)"},
- {"_ZN4dyld20garbageCollectImagesEv", "dyld::garbageCollectImages()"},
- {"_ZN4dyld9preflightEP11ImageLoaderRKNS0_10RPathChainE", "dyld::preflight(ImageLoader*, ImageLoader::RPathChain const&)"},
- {"_ZN4dyld4linkEP11ImageLoaderbRKNS0_10RPathChainE", "dyld::link(ImageLoader*, bool, ImageLoader::RPathChain const&)"},
- {"_ZN4dyld10cloneImageEP11ImageLoader", "dyld::cloneImage(ImageLoader*)"},
- {"_ZN4dyld4loadEPKcRKNS_11LoadContextE", "dyld::load(char const*, dyld::LoadContext const&)"},
- {"_ZN4dyld5_mainEPK12macho_headermiPPKcS5_S5_", "dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**)"},
- {"_ZNSt6vectorIN4dyld13RegisteredDOFESaIS1_EE5eraseEN9__gnu_cxx17__normal_iteratorIPS1_S3_EE", "std::vector<dyld::RegisteredDOF, std::allocator<dyld::RegisteredDOF>>::erase(__gnu_cxx::__normal_iterator<dyld::RegisteredDOF*, std::vector<dyld::RegisteredDOF, std::allocator<dyld::RegisteredDOF>>>)"},
- {"_ZNSt12_Vector_baseIPKcSaIS1_EED2Ev", "std::_Vector_base<char const*, std::allocator<char const*>>::~_Vector_base()"},
- {"_ZNSt6vectorIPKcSaIS1_EED2Ev", "std::vector<char const*, std::allocator<char const*>>::~vector()"},
- {"_ZNSt12_Vector_baseIPFPKc17dyld_image_statesjPK15dyld_image_infoESaIS7_EED2Ev", "std::_Vector_base<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), std::allocator<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*)>>::~_Vector_base()"},
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- {"_ZNSt12_Vector_baseIPFvPK11mach_headerlESaIS4_EED2Ev", "std::_Vector_base<void (*)(mach_header const*, long), std::allocator<void (*)(mach_header const*, long)>>::~_Vector_base()"},
- {"_ZNSt6vectorIPFvPK11mach_headerlESaIS4_EED2Ev", "std::vector<void (*)(mach_header const*, long), std::allocator<void (*)(mach_header const*, long)>>::~vector()"},
- {"_ZNSt12_Vector_baseIN4dyld13RegisteredDOFESaIS1_EED2Ev", "std::_Vector_base<dyld::RegisteredDOF, std::allocator<dyld::RegisteredDOF>>::~_Vector_base()"},
- {"_ZNSt6vectorIN4dyld13RegisteredDOFESaIS1_EED2Ev", "std::vector<dyld::RegisteredDOF, std::allocator<dyld::RegisteredDOF>>::~vector()"},
- {"_ZNSt12_Vector_baseIP11ImageLoaderSaIS1_EED2Ev", "std::_Vector_base<ImageLoader*, std::allocator<ImageLoader*>>::~_Vector_base()"},
- {"_ZNSt6vectorIP11ImageLoaderSaIS1_EED2Ev", "std::vector<ImageLoader*, std::allocator<ImageLoader*>>::~vector()"},
- {"_ZN9__gnu_cxx13new_allocatorIPFPKc17dyld_image_statesjPK15dyld_image_infoEE8allocateEmPKv", "__gnu_cxx::new_allocator<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*)>::allocate(unsigned long, void const*)"},
- {"_ZN9__gnu_cxx13new_allocatorIPFvPK11mach_headerlEE8allocateEmPKv", "__gnu_cxx::new_allocator<void (*)(mach_header const*, long)>::allocate(unsigned long, void const*)"},
- {"_ZN9__gnu_cxx13new_allocatorIPKcE8allocateEmPKv", "__gnu_cxx::new_allocator<char const*>::allocate(unsigned long, void const*)"},
- {"_ZN9__gnu_cxx13new_allocatorIP11ImageLoaderE8allocateEmPKv", "__gnu_cxx::new_allocator<ImageLoader*>::allocate(unsigned long, void const*)"},
- {"_ZN9__gnu_cxx13new_allocatorIN4dyld13RegisteredDOFEE8allocateEmPKv", "__gnu_cxx::new_allocator<dyld::RegisteredDOF>::allocate(unsigned long, void const*)"},
- {"_ZNSt6vectorIN4dyld13RegisteredDOFESaIS1_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS1_S3_EERKS1_", "std::vector<dyld::RegisteredDOF, std::allocator<dyld::RegisteredDOF>>::_M_insert_aux(__gnu_cxx::__normal_iterator<dyld::RegisteredDOF*, std::vector<dyld::RegisteredDOF, std::allocator<dyld::RegisteredDOF>>>, dyld::RegisteredDOF const&)"},
- {"_ZNSt6vectorIN4dyld13RegisteredDOFESaIS1_EE9push_backERKS1_", "std::vector<dyld::RegisteredDOF, std::allocator<dyld::RegisteredDOF>>::push_back(dyld::RegisteredDOF const&)"},
- {"_ZSt18uninitialized_copyIPPFPKc17dyld_image_statesjPK15dyld_image_infoES8_ET0_T_SA_S9_", "char const* (**std::uninitialized_copy<char const* (**)(dyld_image_states, unsigned int, dyld_image_info const*), char const* (**)(dyld_image_states, unsigned int, dyld_image_info const*)>(char const* (**)(dyld_image_states, unsigned int, dyld_image_info const*), char const* (**)(dyld_image_states, unsigned int, dyld_image_info const*), char const* (**)(dyld_image_states, unsigned int, dyld_image_info const*)))(dyld_image_states, unsigned int, dyld_image_info const*)"},
- {"_ZSt18uninitialized_copyIPPFvPK11mach_headerlES5_ET0_T_S7_S6_", "void (**std::uninitialized_copy<void (**)(mach_header const*, long), void (**)(mach_header const*, long)>(void (**)(mach_header const*, long), void (**)(mach_header const*, long), void (**)(mach_header const*, long)))(mach_header const*, long)"},
- {"_ZSt18uninitialized_copyIPPKcS2_ET0_T_S4_S3_", "char const** std::uninitialized_copy<char const**, char const**>(char const**, char const**, char const**)"},
- {"_ZNSt15__copy_backwardILb1ESt26random_access_iterator_tagE8__copy_bIPFPKc17dyld_image_statesjPK15dyld_image_infoEEEPT_PKSB_SE_SC_", "char const* (**std::__copy_backward<true, std::random_access_iterator_tag>::__copy_b<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*)>(char const* (* const*)(dyld_image_states, unsigned int, dyld_image_info const*), char const* (* const*)(dyld_image_states, unsigned int, dyld_image_info const*), char const* (**)(dyld_image_states, unsigned int, dyld_image_info const*)))(dyld_image_states, unsigned int, dyld_image_info const*)"},
- {"_ZNSt6vectorIPFPKc17dyld_image_statesjPK15dyld_image_infoESaIS7_EE13_M_insert_auxEN9__gnu_cxx17__normal_iteratorIPS7_S9_EERKS7_", "std::vector<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), std::allocator<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*)>>::_M_insert_aux(__gnu_cxx::__normal_iterator<char const* (**)(dyld_image_states, unsigned int, dyld_image_info const*), std::vector<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), std::allocator<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*)>>>, char const* (* const&)(dyld_image_states, unsigned int, dyld_image_info const*))"},
- {"_ZNSt6vectorIPFPKc17dyld_image_statesjPK15dyld_image_infoESaIS7_EE6insertEN9__gnu_cxx17__normal_iteratorIPS7_S9_EERKS7_", "std::vector<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), std::allocator<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*)>>::insert(__gnu_cxx::__normal_iterator<char const* (**)(dyld_image_states, unsigned int, dyld_image_info const*), std::vector<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), std::allocator<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*)>>>, char const* (* const&)(dyld_image_states, unsigned int, dyld_image_info const*))"},
- {"_ZNSt6vectorIPFPKc17dyld_image_statesjPK15dyld_image_infoESaIS7_EE9push_backERKS7_", "std::vector<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*), std::allocator<char const* (*)(dyld_image_states, unsigned int, dyld_image_info const*)>>::push_back(char const* (* const&)(dyld_image_states, unsigned int, dyld_image_info const*))"},
- {"_ZNSt15__copy_backwardILb1ESt26random_access_iterator_tagE8__copy_bIPFvPK11mach_headerlEEEPT_PKS8_SB_S9_", "void (**std::__copy_backward<true, std::random_access_iterator_tag>::__copy_b<void (*)(mach_header const*, long)>(void (* const*)(mach_header const*, long), void (* const*)(mach_header const*, long), void (**)(mach_header const*, long)))(mach_header const*, long)"},
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- {"_ZNSt15__copy_backwardILb1ESt26random_access_iterator_tagE8__copy_bIPKcEEPT_PKS5_S8_S6_", "char const** std::__copy_backward<true, std::random_access_iterator_tag>::__copy_b<char const*>(char const* const*, char const* const*, char const**)"},
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- {"_ZNSt15__copy_backwardILb1ESt26random_access_iterator_tagE8__copy_bIP11ImageLoaderEEPT_PKS5_S8_S6_", "ImageLoader** std::__copy_backward<true, std::random_access_iterator_tag>::__copy_b<ImageLoader*>(ImageLoader* const*, ImageLoader* const*, ImageLoader**)"},
- {"_ZNSt6vectorIPFvPK11mach_headerlESaIS4_EE20_M_allocate_and_copyIPS4_EES8_mT_S9_", "void (**std::vector<void (*)(mach_header const*, long), std::allocator<void (*)(mach_header const*, long)>>::_M_allocate_and_copy<void (**)(mach_header const*, long)>(unsigned long, void (**)(mach_header const*, long), void (**)(mach_header const*, long)))(mach_header const*, long)"},
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- {"_ZNSt6vectorIN4dyld13RegisteredDOFESaIS1_EE7reserveEm", "std::vector<dyld::RegisteredDOF, std::allocator<dyld::RegisteredDOF>>::reserve(unsigned long)"},
- {"_ZSt18uninitialized_copyIPP11ImageLoaderS2_ET0_T_S4_S3_", "ImageLoader** std::uninitialized_copy<ImageLoader**, ImageLoader**>(ImageLoader**, ImageLoader**, ImageLoader**)"},
- {"_ZNSt6vectorIP11ImageLoaderSaIS1_EE20_M_allocate_and_copyIPS1_EES5_mT_S6_", "ImageLoader** std::vector<ImageLoader*, std::allocator<ImageLoader*>>::_M_allocate_and_copy<ImageLoader**>(unsigned long, ImageLoader**, ImageLoader**)"},
- {"_ZNSt6vectorIP11ImageLoaderSaIS1_EE7reserveEm", "std::vector<ImageLoader*, std::allocator<ImageLoader*>>::reserve(unsigned long)"},
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- {"_ZNSt6vectorIP11ImageLoaderSaIS1_EE9push_backERKS1_", "std::vector<ImageLoader*, std::allocator<ImageLoader*>>::push_back(ImageLoader* const&)"},
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- {"_Z18lookupDyldFunctionPKcPm", "lookupDyldFunction(char const*, unsigned long*)"},
- {"_ZNSt12_Vector_baseIP19__NSObjectFileImageSaIS1_EED2Ev", "std::_Vector_base<__NSObjectFileImage*, std::allocator<__NSObjectFileImage*>>::~_Vector_base()"},
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- {"_Z19setAlImageInfosHaltPKcm", "setAlImageInfosHalt(char const*, unsigned long)"},
- {"_Z24removeImageFromAllImagesPK11mach_header", "removeImageFromAllImages(mach_header const*)"},
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- {"...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/137947
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