1 // RUN: %clang_cl_asan -O0 %s -Fe%t 2 // RUN: not %run %t 2>&1 | FileCheck %s 3 4 #include <stdio.h> 5 6 int main() { 7 int subscript = -1; 8 char buffer[42]; 9 buffer[subscript] = 42; 10 // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] 11 // CHECK: WRITE of size 1 at [[ADDR]] thread T0 12 // CHECK-NEXT: {{#0 .* main .*stack_array_left_oob.cc}}:[[@LINE-3]] 13 // CHECK: Address [[ADDR]] is located in stack of thread T0 at offset [[OFFSET:.*]] in frame 14 // CHECK-NEXT: {{#0 .* main .*stack_array_left_oob.cc}} 15 // CHECK: 'buffer' <== Memory access at offset [[OFFSET]] underflows this variable 16 } 17