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[sanitizer] Allow use-after-scope front-end argument to take effect with -fsanitize=kernel-address #137015

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Merged
merged 3 commits into from
Apr 28, 2025
Merged

[sanitizer] Allow use-after-scope front-end argument to take effect with -fsanitize=kernel-address #137015

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f448a60
Allow use-after-scope front-end argument to take effect with -fsaniti…
dgg5503 Apr 22, 2025
0334b67
tweak logic
dgg5503 Apr 24, 2025
71bf0d5
clang-format
dgg5503 Apr 24, 2025
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8 changes: 7 additions & 1 deletion clang/lib/Driver/SanitizerArgs.cpp
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Expand Up @@ -1099,7 +1099,13 @@ SanitizerArgs::SanitizerArgs(const ToolChain &TC,
}

} else {
AsanUseAfterScope = false;
if (AllAddedKinds & SanitizerKind::KernelAddress) {
AsanUseAfterScope = Args.hasFlag(
options::OPT_fsanitize_address_use_after_scope,
options::OPT_fno_sanitize_address_use_after_scope, AsanUseAfterScope);
} else {
AsanUseAfterScope = false;
}
// -fsanitize=pointer-compare/pointer-subtract requires -fsanitize=address.
SanitizerMask DetectInvalidPointerPairs =
SanitizerKind::PointerCompare | SanitizerKind::PointerSubtract;
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3 changes: 3 additions & 0 deletions clang/test/CodeGen/lifetime-sanitizer.c
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Expand Up @@ -4,6 +4,9 @@
// RUN: -fsanitize=address -fsanitize-address-use-after-scope \
// RUN: -Xclang -disable-llvm-passes %s | FileCheck %s -check-prefix=LIFETIME
// RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
// RUN: -fsanitize=kernel-address -fsanitize-address-use-after-scope \
// RUN: -Xclang -disable-llvm-passes %s | FileCheck %s -check-prefix=LIFETIME
// RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
// RUN: -fsanitize=memory -Xclang -disable-llvm-passes %s | \
// RUN: FileCheck %s -check-prefix=LIFETIME
// RUN: %clang -target aarch64-linux-gnu -S -emit-llvm -o - -O0 \
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3 changes: 3 additions & 0 deletions clang/test/CodeGenCXX/lifetime-sanitizer.cpp
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Expand Up @@ -5,6 +5,9 @@
// RUN: -fsanitize=address -fsanitize-address-use-after-scope \
// RUN: -Xclang -disable-llvm-passes %s | FileCheck %s -check-prefixes=CHECK,LIFETIME
// RUN: %clang -w -target x86_64-linux-gnu -S -emit-llvm -o - -fno-exceptions -O0 \
// RUN: -fsanitize=kernel-address -fsanitize-address-use-after-scope \
// RUN: -Xclang -disable-llvm-passes %s | FileCheck %s -check-prefixes=CHECK,LIFETIME
// RUN: %clang -w -target x86_64-linux-gnu -S -emit-llvm -o - -fno-exceptions -O0 \
// RUN: -fsanitize=memory -Xclang -disable-llvm-passes %s | \
// RUN: FileCheck %s -check-prefixes=CHECK,LIFETIME
// RUN: %clang -w -target aarch64-linux-gnu -S -emit-llvm -o - -fno-exceptions -O0 \
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