forked from OSchip/llvm-project
60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
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// RUN: %clangxx_asan -O1 %s -o %t
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// RUN: not %run %t 0 2>&1 | FileCheck %s --check-prefix=CHECK0
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// RUN: not %run %t 1 2>&1 | FileCheck %s --check-prefix=CHECK1
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// RUN: not %run %t 2 2>&1 | FileCheck %s --check-prefix=CHECK2
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// RUN: not %run %t 3 2>&1 | FileCheck %s --check-prefix=CHECK3
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#define NOINLINE __attribute__((noinline))
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inline void break_optimization(void *arg) {
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__asm__ __volatile__("" : : "r" (arg) : "memory");
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}
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NOINLINE static void Frame0(int frame, char *a, char *b, char *c) {
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char s[4] = {0};
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char *d = s;
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break_optimization(&d);
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switch (frame) {
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case 3: a[5]++; break;
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case 2: b[5]++; break;
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case 1: c[5]++; break;
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case 0: d[5]++; break;
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}
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}
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NOINLINE static void Frame1(int frame, char *a, char *b) {
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char c[4] = {0}; Frame0(frame, a, b, c);
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break_optimization(0);
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}
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NOINLINE static void Frame2(int frame, char *a) {
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char b[4] = {0}; Frame1(frame, a, b);
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break_optimization(0);
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}
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NOINLINE static void Frame3(int frame) {
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char a[4] = {0}; Frame2(frame, a);
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break_optimization(0);
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}
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int main(int argc, char **argv) {
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if (argc != 2) return 1;
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Frame3(argv[1][0] - '0');
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}
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// CHECK0: AddressSanitizer: stack-buffer-overflow
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// CHECK0: #0{{.*}}Frame0
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// CHECK0: #1{{.*}}Frame1
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// CHECK0: #2{{.*}}Frame2
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// CHECK0: #3{{.*}}Frame3
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// CHECK0: is located in stack of thread T0 at offset
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// CHECK0-NEXT: #0{{.*}}Frame0
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//
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// CHECK1: AddressSanitizer: stack-buffer-overflow
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// CHECK1: is located in stack of thread T0 at offset
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// CHECK1-NEXT: #0{{.*}}Frame1
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//
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// CHECK2: AddressSanitizer: stack-buffer-overflow
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// CHECK2: is located in stack of thread T0 at offset
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// CHECK2-NEXT: #0{{.*}}Frame2
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//
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// CHECK3: AddressSanitizer: stack-buffer-overflow
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// CHECK3: is located in stack of thread T0 at offset
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// CHECK3-NEXT: #0{{.*}}Frame3
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