[PATCH] D118624: [MSVC] Workaround missing search path for sanitizer headers.
pierre gousseau via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Jan 31 09:08:32 PST 2022
pgousseau created this revision.
pgousseau added reviewers: rnk, aaron.ballman, thakis, kcc.
Herald added a subscriber: dexonsmith.
pgousseau requested review of this revision.
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Herald added a subscriber: llvm-commits.
This is to fix build errors “Cannot open include file: 'sanitizer/asan_interface.h'” when building LLVM with MSVC and LLVM_USE_SANITIZER=Address.
asan_interface.h is not available in MSVC's search path, instead it is located under %VCToolsInstallDir%/crt/src/sanitizer
This is an alternate solution to https://reviews.llvm.org/D118159 , to avoid adding all internal crt sources to the header search paths.
Tested with visual studio 2019 v16.9.6
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D118624
Files:
llvm/include/llvm/Support/Compiler.h
Index: llvm/include/llvm/Support/Compiler.h
===================================================================
--- llvm/include/llvm/Support/Compiler.h
+++ llvm/include/llvm/Support/Compiler.h
@@ -439,8 +439,22 @@
/// Whether LLVM itself is built with AddressSanitizer instrumentation.
#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
# define LLVM_ADDRESS_SANITIZER_BUILD 1
+#ifndef __has_include
+#define __has_include(inc) 0
+#endif
+#if __has_include(<sanitizer/asan_interface.h>)
# include <sanitizer/asan_interface.h>
#else
+#ifdef __cplusplus
+extern "C" {
+#endif
+void __asan_poison_memory_region(void const volatile *addr, size_t size);
+void __asan_unpoison_memory_region(void const volatile *addr, size_t size);
+#ifdef __cplusplus
+} // extern "C"
+#endif
+#endif
+#else
# define LLVM_ADDRESS_SANITIZER_BUILD 0
# define __asan_poison_memory_region(p, size)
# define __asan_unpoison_memory_region(p, size)
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