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210ecfdf35
we want the stack safety analysis to be able to skip array accesses that are already checked by array-bounds.
27 lines
1.1 KiB
C
27 lines
1.1 KiB
C
// REQUIRES: aarch64-registered-target
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// RUN: %clang -fsanitize-trap=undefined -fsanitize=hwaddress,array-bounds -target aarch64-linux-gnu -S -emit-llvm -mllvm -hwasan-use-stack-safety=true -mllvm -hwasan-generate-tags-with-calls -O2 %s -o - | FileCheck %s --check-prefixes=CHECK,SAFETY
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// RUN: %clang -fsanitize-trap=undefined -fsanitize=hwaddress,array-bounds -target aarch64-linux-gnu -S -emit-llvm -mllvm -hwasan-use-stack-safety=false -mllvm -hwasan-generate-tags-with-calls -O2 %s -o - | FileCheck %s --check-prefixes=CHECK,NOSAFETY
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// Make sure that HWAsan does not re-check what has been validated by array-bounds
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void f(char*);
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int foo(unsigned int idx) {
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char buf[10];
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f(buf);
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return buf[idx];
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// CHECK-LABEL: {{.*}}foo
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// NOSAFETY: call void @llvm.hwasan.check.memaccess.shortgranules
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// SAFETY-NOT: call void @llvm.hwasan.check.memaccess.shortgranules
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}
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int bar(int idx) {
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char buf[10];
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f(buf);
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return buf[idx];
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// CHECK-LABEL: {{.*}}bar
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// NOSAFETY: call void @llvm.hwasan.check.memaccess.shortgranules
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// SAFETY-NOT: call void @llvm.hwasan.check.memaccess.shortgranules
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}
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