forked from OSchip/llvm-project
18 lines
1.1 KiB
C
18 lines
1.1 KiB
C
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// RUN: %clang_cc1 -triple x86_64-linux-gnu -fsanitize=address -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefix=LINUX
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// RUN: %clang_cc1 -triple x86_64-windows-msvc -fsanitize=address -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefix=WINDOWS
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// RUN: %clang_cc1 -triple x86_64-windows-msvc -fsanitize=address -fwritable-strings -disable-llvm-passes -emit-llvm -o - %s | FileCheck %s --check-prefix=WINWRITE
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// On Linux (and basically every non-MS target) string literals are emitted with
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// private linkage, which means ASan can freely instrument them. On Windows,
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// they are emitted with comdats. ASan's global instrumentation code for COFF
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// knows how to make the metadata comdat associative, so the string literal
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// global is only registered if the instrumented global prevails during linking.
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const char *foo() { return "asdf"; }
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// LINUX: @.str = private unnamed_addr constant [5 x i8] c"asdf\00", align 1
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// WINDOWS: @"??_C@_04JIHMPGLA@asdf?$AA@" = linkonce_odr dso_local unnamed_addr constant [5 x i8] c"asdf\00", comdat, align 1
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// WINWRITE: @.str = private unnamed_addr global [5 x i8] c"asdf\00", align 1
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