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Enable msan unconditionally on Linux. 

Memory sanitizer compatibility are already done in
MemorySanitizer::doInitialization. It verifies whether the necessary offsets
exist and bails out if not. For this reason it is no good to duplicate two
checks in two projects. This patch removes clang check and postpones msan
compatibility validation till MemorySanitizer::doInitialization.

Another reason for this patch is to allow using msan with any CPU (given
compatible runtime) and custom mapping provided via the arguments added by
https://reviews.llvm.org/D44926.

Patch by vit9696.

Differential Revision: https://reviews.llvm.org/D44927

llvm-svn: 329241
This commit is contained in:
Evgeniy Stepanov 2018-04-04 23:48:06 +00:00
parent 3a7fdb7d04
commit 072b1a2d6c
2 changed files with 1 additions and 5 deletions
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3
clang/lib/Driver/ToolChains/Linux.cpp
View File

@ -884,6 +884,7 @@ SanitizerMask Linux::getSupportedSanitizers() const {
Res |= SanitizerKind::Fuzzer;
Res |= SanitizerKind::FuzzerNoLink;
Res |= SanitizerKind::KernelAddress;
Res |= SanitizerKind::Memory;
Res |= SanitizerKind::Vptr;
Res |= SanitizerKind::SafeStack;
if (IsX86_64 || IsMIPS64 || IsAArch64)
@ -892,8 +893,6 @@ SanitizerMask Linux::getSupportedSanitizers() const {
Res |= SanitizerKind::Leak;
if (IsX86_64 || IsMIPS64 || IsAArch64 || IsPowerPC64)
Res |= SanitizerKind::Thread;
if (IsX86_64 || IsMIPS64 || IsPowerPC64 || IsAArch64)
Res |= SanitizerKind::Memory;
if (IsX86_64 || IsMIPS64)
Res |= SanitizerKind::Efficiency;
if (IsX86 || IsX86_64)

3
clang/test/Driver/fsanitize.c
View File

@ -308,9 +308,6 @@
// CHECK-DIAG1: unsupported argument 'zzz' to option 'fsanitize='
// CHECK-DIAG1-NOT: unsupported argument 'zzz' to option 'fsanitize='
// RUN: %clang -target i686-linux-gnu -fsanitize=memory %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-MSAN-X86
// CHECK-MSAN-X86: error: unsupported option '-fsanitize=memory' for target 'i686--linux-gnu'
// RUN: %clang -target x86_64-apple-darwin10 -fsanitize=memory %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-MSAN-DARWIN
// CHECK-MSAN-DARWIN: unsupported option '-fsanitize=memory' for target 'x86_64-apple-darwin10'