efd46bc1ef
Allow `-f[no]-sanitize-address-use-after-scope` to take effect under kernel-address sanitizer (`-fsanitize=kernel-address`). `use-after-scope` is now enabled by default under kernel-address sanitizer. Previously, users may have enabled `use-after-scope` checks for kernel-address sanitizer via `-mllvm -asan-use-after-scope=true`. While this may have worked for optimization levels > O0, the required lifetime intrinsics to allow for `use-after-scope` detection were not emitted under O0. This commit ensures the required lifetime intrinsics are emitted under O0 with kernel-address sanitizer.
32 lines
1.3 KiB
C
32 lines
1.3 KiB
C
// RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
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// RUN: -Xclang -disable-llvm-passes %s | FileCheck %s -check-prefix=CHECK-O0
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// RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
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// RUN: -fsanitize=address -fsanitize-address-use-after-scope \
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// RUN: -Xclang -disable-llvm-passes %s | FileCheck %s -check-prefix=LIFETIME
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// RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
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// RUN: -fsanitize=kernel-address -fsanitize-address-use-after-scope \
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// RUN: -Xclang -disable-llvm-passes %s | FileCheck %s -check-prefix=LIFETIME
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// RUN: %clang -target x86_64-linux-gnu -S -emit-llvm -o - -O0 \
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// RUN: -fsanitize=memory -Xclang -disable-llvm-passes %s | \
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// RUN: FileCheck %s -check-prefix=LIFETIME
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// RUN: %clang -target aarch64-linux-gnu -S -emit-llvm -o - -O0 \
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// RUN: -fsanitize=hwaddress -Xclang -disable-llvm-passes %s | \
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// RUN: FileCheck %s -check-prefix=LIFETIME
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extern int bar(char *A, int n);
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// CHECK-O0-NOT: @llvm.lifetime.start
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int foo(int n) {
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if (n) {
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// LIFETIME: @llvm.lifetime.start.p0(i64 10, ptr {{.*}})
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char A[10];
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return bar(A, 1);
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// LIFETIME: @llvm.lifetime.end.p0(i64 10, ptr {{.*}})
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} else {
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// LIFETIME: @llvm.lifetime.start.p0(i64 20, ptr {{.*}})
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char A[20];
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return bar(A, 2);
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// LIFETIME: @llvm.lifetime.end.p0(i64 20, ptr {{.*}})
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}
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}
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