From 389c7f91425bb0991663b879a79a7825d57061bb Mon Sep 17 00:00:00 2001 From: Reid Kleckner Date: Thu, 15 Sep 2016 15:39:52 +0000 Subject: [PATCH] Really fix the Windows sanitizer build Don't list __sanitizer_print_memory profile as an INTERFACE_FUNCTION. It is not exported by ASan; it is exported by user code. Move the weak definition from asan_win.cc to sanitizer_win.cc to fix the ubsan tests. llvm-svn: 281619 --- compiler-rt/lib/asan/asan_win.cc | 3 --- compiler-rt/lib/asan/asan_win_dll_thunk.cc | 1 - compiler-rt/lib/sanitizer_common/sanitizer_win.cc | 12 ++++++++++++ 3 files changed, 12 insertions(+), 4 deletions(-) diff --git a/compiler-rt/lib/asan/asan_win.cc b/compiler-rt/lib/asan/asan_win.cc index 0da76d542a9a..58649139e029 100644 --- a/compiler-rt/lib/asan/asan_win.cc +++ b/compiler-rt/lib/asan/asan_win.cc @@ -44,7 +44,6 @@ int __asan_should_detect_stack_use_after_return() { // __asan_default_options(). void __sanitizer_default_malloc_hook(void *ptr, uptr size) { } void __sanitizer_default_free_hook(void *ptr) { } -void __sanitizer_default_print_memory_profile(int top_percent) {} const char* __asan_default_default_options() { return ""; } const char* __asan_default_default_suppressions() { return ""; } void __asan_default_on_error() {} @@ -52,14 +51,12 @@ void __asan_default_on_error() {} #ifdef _WIN64 #pragma comment(linker, "/alternatename:__sanitizer_malloc_hook=__sanitizer_default_malloc_hook") // NOLINT #pragma comment(linker, "/alternatename:__sanitizer_free_hook=__sanitizer_default_free_hook") // NOLINT -#pragma comment(linker, "/alternatename:__sanitizer_print_memory_profile=__sanitizer_default_print_memory_profile") // NOLINT #pragma comment(linker, "/alternatename:__asan_default_options=__asan_default_default_options") // NOLINT #pragma comment(linker, "/alternatename:__asan_default_suppressions=__asan_default_default_suppressions") // NOLINT #pragma comment(linker, "/alternatename:__asan_on_error=__asan_default_on_error") // NOLINT #else #pragma comment(linker, "/alternatename:___sanitizer_malloc_hook=___sanitizer_default_malloc_hook") // NOLINT #pragma comment(linker, "/alternatename:___sanitizer_free_hook=___sanitizer_default_free_hook") // NOLINT -#pragma comment(linker, "/alternatename:___sanitizer_print_memory_profile=___sanitizer_default_print_memory_profile") // NOLINT #pragma comment(linker, "/alternatename:___asan_default_options=___asan_default_default_options") // NOLINT #pragma comment(linker, "/alternatename:___asan_default_suppressions=___asan_default_default_suppressions") // NOLINT #pragma comment(linker, "/alternatename:___asan_on_error=___asan_default_on_error") // NOLINT diff --git a/compiler-rt/lib/asan/asan_win_dll_thunk.cc b/compiler-rt/lib/asan/asan_win_dll_thunk.cc index 7722053a956b..2134009f9854 100644 --- a/compiler-rt/lib/asan/asan_win_dll_thunk.cc +++ b/compiler-rt/lib/asan/asan_win_dll_thunk.cc @@ -344,7 +344,6 @@ INTERFACE_FUNCTION(__sanitizer_print_stack_trace) INTERFACE_FUNCTION(__sanitizer_symbolize_pc) INTERFACE_FUNCTION(__sanitizer_ptr_cmp) INTERFACE_FUNCTION(__sanitizer_ptr_sub) -INTERFACE_FUNCTION(__sanitizer_print_memory_profile) INTERFACE_FUNCTION(__sanitizer_report_error_summary) INTERFACE_FUNCTION(__sanitizer_reset_coverage) INTERFACE_FUNCTION(__sanitizer_get_number_of_counters) diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_win.cc b/compiler-rt/lib/sanitizer_common/sanitizer_win.cc index 04e1e11bbec5..7555360c606a 100644 --- a/compiler-rt/lib/sanitizer_common/sanitizer_win.cc +++ b/compiler-rt/lib/sanitizer_common/sanitizer_win.cc @@ -895,4 +895,16 @@ void GetMemoryProfile(fill_profile_f cb, uptr *stats, uptr stats_size) { } } // namespace __sanitizer +// Workaround to implement weak hooks on Windows. COFF doesn't directly support +// weak symbols, but it does support /alternatename, which is similar. If the +// user does not override the hook, we will use this default definition instead +// of null. +extern "C" void __sanitizer_print_memory_profile(int top_percent) {} + +#ifdef _WIN64 +#pragma comment(linker, "/alternatename:__sanitizer_print_memory_profile=__sanitizer_default_print_memory_profile") // NOLINT +#else +#pragma comment(linker, "/alternatename:___sanitizer_print_memory_profile=___sanitizer_default_print_memory_profile") // NOLINT +#endif + #endif // _WIN32