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// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
// RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
// RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
// RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-%os --check-prefix=CHECK
// XFAIL: arm-linux-gnueabi
// XFAIL: armv7l-unknown-linux-gnueabihf
// Test use-after-free report in the case when access is at the right border of
// the allocation.
#include <stdlib.h>
int main() {
volatile char *x = (char*)malloc(sizeof(char));
free((void*)x);
*x = 42;
// CHECK: {{.*ERROR: AddressSanitizer: heap-use-after-free on address}}
// CHECK: {{0x.* at pc 0x.* bp 0x.* sp 0x.*}}
// CHECK: {{WRITE of size 1 at 0x.* thread T0}}
// CHECK: {{ #0 0x.* in main .*use-after-free-right.cc:}}[[@LINE-4]]
// CHECK: {{0x.* is located 0 bytes inside of 1-byte region .0x.*,0x.*}}
// CHECK: {{freed by thread T0 here:}}
// CHECK-Linux: {{ #0 0x.* in .*free}}
// CHECK-Linux: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-10]]
// CHECK-Darwin: {{ #0 0x.* in wrap_free}}
// CHECK-Darwin: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-13]]
// CHECK: {{previously allocated by thread T0 here:}}
// CHECK-Linux: {{ #0 0x.* in .*malloc}}
// CHECK-Linux: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-19]]
// CHECK-Darwin: {{ #0 0x.* in wrap_malloc.*}}
// CHECK-Darwin: {{ #1 0x.* in main .*use-after-free-right.cc:}}[[@LINE-22]]
}
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