1 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s 2 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s 3 // RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s 4 // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s 5 6 // REQUIRES: compiler-rt-optimized 7 // REQUIRES: stable-runtime 8 9 #include <string.h> 10 #include <stdlib.h> 11 int main(int argc, char **argv) { 12 char *hello = (char*)malloc(6); 13 strcpy(hello, "hello"); 14 char *short_buffer = (char*)malloc(9); 15 strncpy(short_buffer, hello, 10); // BOOM 16 // CHECK: {{WRITE of size 10 at 0x.* thread T0}} 17 // CHECK: {{ #0 0x.* in .*strncpy}} 18 // CHECK: {{ #1 0x.* in main .*strncpy-overflow.cpp:}}[[@LINE-3]] 19 // CHECK: {{0x.* is located 0 bytes to the right of 9-byte region}} 20 // CHECK: {{allocated by thread T0 here:}} 21 // CHECK: {{ #0 0x.* in .*malloc}} 22 // CHECK: {{ #1 0x.* in main .*strncpy-overflow.cpp:}}[[@LINE-8]] 23 return short_buffer[8]; 24 } 25