File: out-of-bounds-multiline-2.c

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gcc-arm-none-eabi 15%3A14.2.rel1-1
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/* Integration test of how the execution path looks for
   -Wanalyzer-out-of-bounds with a symbolic size.  */

/* { dg-additional-options "-fdiagnostics-show-path-depths" } */
/* { dg-additional-options "-fdiagnostics-path-format=inline-events -fdiagnostics-show-caret" } */

#include <stdint.h>
#include <stdlib.h>

void int_vla_write_element_after_end_off_by_one(int32_t x, size_t n)
{
  int32_t arr[n];

  arr[n] = x;  /* { dg-warning "stack-based buffer overflow" } */
}

/* { dg-begin-multiline-output "" }
   arr[n] = x;
   ~~~~~~~^~~
  'int_vla_write_element_after_end_off_by_one': events 1-2 (depth 1)
    |
    |   int32_t arr[n];
    |           ^~~
    |           |
    |           (1) capacity: 'n * 4' bytes
    |
    |   arr[n] = x;
    |   ~~~~~~~~~~
    |          |
    |          (2) write of 4 bytes at offset 'n * 4' exceeds the buffer
    |
   { dg-end-multiline-output "" } */