forked from OSchip/llvm-project
69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
// Tests use-after-scope detection and reporting.
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// RUN: %clang_hwasan -mllvm -hwasan-use-after-scope -g %s -o %t && not %run %t 2>&1 | FileCheck %s
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// RUN: %clang_hwasan -mllvm -hwasan-use-after-scope -g %s -o %t && not %env_hwasan_opts=symbolize=0 %run %t 2>&1 | FileCheck %s --check-prefix=NOSYM
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// RUN: %clang_hwasan -mllvm -hwasan-use-after-scope=false -g %s -o %t && %run %t 2>&1
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// Use after scope is turned off by default.
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// RUN: %clang_hwasan -g %s -o %t && %run %t 2>&1
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// RUN: %clang_hwasan -fexperimental-new-pass-manager -mllvm -hwasan-use-after-scope -g %s -o %t && not %run %t 2>&1 | FileCheck %s
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// RUN: %clang_hwasan -fno-experimental-new-pass-manager -mllvm -hwasan-use-after-scope -g %s -o %t && not %run %t 2>&1 | FileCheck %s
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// REQUIRES: stable-runtime
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// Stack histories currently are not recorded on x86.
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// XFAIL: x86_64
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void USE(void *x) { // pretend_to_do_something(void *x)
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__asm__ __volatile__(""
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:
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: "r"(x)
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: "memory");
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}
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__attribute__((noinline)) void Unrelated1() {
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int A[2];
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USE(&A[0]);
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}
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__attribute__((noinline)) void Unrelated2() {
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int BB[3];
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USE(&BB[0]);
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}
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__attribute__((noinline)) void Unrelated3() {
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int CCC[4];
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USE(&CCC[0]);
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}
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__attribute__((noinline)) char buggy() {
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char *volatile p;
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{
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char zzz[0x1000];
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p = zzz;
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}
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return *p;
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}
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int main() {
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Unrelated1();
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Unrelated2();
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Unrelated3();
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char p = buggy();
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return p;
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// CHECK: READ of size 1 at
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// CHECK: #0 {{.*}} in buggy{{.*}}stack-uas.c:[[@LINE-10]]
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// CHECK: Cause: stack tag-mismatch
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// CHECK: is located in stack of thread
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// CHECK: Potentially referenced stack objects:
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// CHECK-NEXT: zzz in buggy {{.*}}stack-uas.c:[[@LINE-17]]
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// CHECK-NEXT: Memory tags around the buggy address
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// NOSYM: Previously allocated frames:
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// NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uas.c.tmp+0x{{.*}}){{$}}
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// NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uas.c.tmp+0x{{.*}}){{$}}
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// NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uas.c.tmp+0x{{.*}}){{$}}
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// NOSYM-NEXT: record_addr:0x{{.*}} record:0x{{.*}} ({{.*}}/stack-uas.c.tmp+0x{{.*}}){{$}}
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// NOSYM-NEXT: Memory tags around the buggy address
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// CHECK: SUMMARY: HWAddressSanitizer: tag-mismatch {{.*}} in buggy
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}
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