Corrected __libfuzzer_is_present symbol inclusion for MSVC x86 32-bit
The incorrect symbol will cause linking failures for 32-bit targets:
clang_rt.fuzzer-i386.lib(FuzzerDriver.obj) : error LNK2001: unresolved external symbol __libfuzzer_is_present
Verified no longer fails to link with this change for 32-bit and still succeeds for 64-bit MSVC.
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D83594
GitOrigin-RevId: c12f11184682c55e10922665cea628332eb158eb
diff --git a/FuzzerDriver.cpp b/FuzzerDriver.cpp
index a847c76..00a33a4 100644
--- a/FuzzerDriver.cpp
+++ b/FuzzerDriver.cpp
@@ -33,7 +33,11 @@
// binary can test for its existence.
#if LIBFUZZER_MSVC
extern "C" void __libfuzzer_is_present() {}
+#if defined(_M_IX86) || defined(__i386__)
+#pragma comment(linker, "/include:___libfuzzer_is_present")
+#else
#pragma comment(linker, "/include:__libfuzzer_is_present")
+#endif
#else
extern "C" __attribute__((used)) void __libfuzzer_is_present() {}
#endif // LIBFUZZER_MSVC
