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

   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
   7 int *arr;
   8
   9 __attribute__((always_inline))
  10 void inlined(int arg) {
  11   int x[5];
  12   for (int i = 0; i < arg; i++) x[i] = i;
  13   arr = x;
  14 }
  15
  16 int main(int argc, char *argv[]) {
  17   inlined(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 }