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/* { dg-additional-options "-fdiagnostics-text-art-charset=unicode" } */
/* { dg-skip-if "requires hosted libstdc++ for stdlib size_t" { ! hostedlib } } */
#include <stdlib.h>
#include <stdint.h>
/* Gap of 4, then an overflow of 4. */
void test2 (size_t size)
{
int32_t *buf = (int32_t *) __builtin_malloc (size * sizeof(int32_t)); /* { dg-message "\\(1\\) capacity: 'size \\* 4' bytes" "" { target c } } */
/* { dg-message "\\(1\\) capacity: '\\(size \\* 4\\)' bytes" "" { target c++ } .-1 } */
if (!buf) return;
buf[size + 1] = 42; /* { dg-warning "heap-based buffer overflow" } */
__builtin_free (buf);
}
/* { dg-begin-multiline-output "" }
┌───────────────────────┐
│write of '(int32_t) 42'│
└───────────────────────┘
│
│
v
┌───────────────────────────────┐ ┌───────────────────────┐
│buffer allocated on heap at (1)│ │ after valid range │
└───────────────────────────────┘ └───────────────────────┘
├───────────────┬───────────────┤├─────┬──────┤├───────────┬───────────┤
│ │ │
╭─────────────┴────────────╮ ╭───┴───╮ ╭─────────┴─────────╮
│capacity: 'size * 4' bytes│ │4 bytes│ │overflow of 4 bytes│
╰──────────────────────────╯ ╰───────╯ ╰───────────────────╯
{ dg-end-multiline-output "" } */
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