1// Test with "-O2" only to make sure inlining (leading to use-after-scope)
2// happens. "always_inline" is not enough, as Clang doesn't emit
3// llvm.lifetime intrinsics at -O0.
4//
5// RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
6
7int *arr;
8
9__attribute__((always_inline))
10void inlined(int arg) {
11 int x[5];
12 for (int i = 0; i < arg; i++) x[i] = i;
13 arr = x;
14}
15
16int main(int argc, char *argv[]) {
17 inlined(arg: argc);
18 return arr[argc - 1]; // BOOM
19 // CHECK: ERROR: AddressSanitizer: stack-use-after-scope
20 // CHECK: READ of size 4 at 0x{{.*}} thread T0
21 // CHECK: #0 0x{{.*}} in main
22 // CHECK: {{.*}}use-after-scope-inlined.cpp:[[@LINE-4]]
23 // CHECK: Address 0x{{.*}} is located in stack of thread T0 at offset [[OFFSET:[^ ]*]] in frame
24 // CHECK: {{.*}} in main
25 // CHECK: This frame has
26 // CHECK: {{\[}}[[OFFSET]], {{.*}}) 'x.i' (line [[@LINE-15]])
27}
28

source code of compiler-rt/test/asan/TestCases/use-after-scope-inlined.cpp