1 #include <string.h> 2 #include <stdlib.h> 3 int main(int argc, char **argv) { 4 char *hello = (char*)malloc(6); 5 strcpy(hello, "hello"); 6 char *short_buffer = (char*)malloc(9); 7 strncpy(short_buffer, hello, 10); // BOOM 8 return short_buffer[8]; 9 } 10 11 // Check-Common: {{WRITE of size 1 at 0x.* thread T0}} 12 // Check-Linux: {{ #0 0x.* in strncpy}} 13 // Check-Darwin: {{ #0 0x.* in wrap_strncpy}} 14 // Check-Common: {{ #1 0x.* in main .*strncpy-overflow.cc:[78]}} 15 // Check-Common: {{0x.* is located 0 bytes to the right of 9-byte region}} 16 // Check-Common: {{allocated by thread T0 here:}} 17 18 // Check-Linux: {{ #0 0x.* in malloc}} 19 // Check-Linux: {{ #1 0x.* in main .*strncpy-overflow.cc:6}} 20 21 // Check-Darwin: {{ #0 0x.* in .*mz_malloc.*}} 22 // Check-Darwin: {{ #1 0x.* in malloc_zone_malloc.*}} 23 // Check-Darwin: {{ #2 0x.* in malloc.*}} 24 // Check-Darwin: {{ #3 0x.* in main .*strncpy-overflow.cc:6}} 25
