On Dez 06 2019, Martin Sebor wrote:
> diff --git a/gcc/testsuite/gcc.dg/Wstringop-overflow-27.c
> b/gcc/testsuite/gcc.dg/Wstringop-overflow-27.c
> new file mode 100644
> index 00000000000..249ce2b6ad5
> --- /dev/null
> +++ b/gcc/testsuite/gcc.dg/Wstringop-overflow-27.c
> +void test_strcpy_warn (const char *s)
> +{
> + {
> + const char a[] = "123";
> + /* Verify that using signed int for the strlen result works (i.e.,
> + that the conversion from signed int to size_t doesn't prevent
> + the detection. */
> + int n = strlen (a);
> + char *t = (char*)calloc (n, 1); // { dg-message "at offset 0 to an
> object with size 3 allocated by 'calloc' here" "calloc note" { xfail *-*-* } }
> + // { dg-message "at offset 0 to an
> object with size at most 3 allocated by 'calloc' here" "calloc note" { target
> *-*-* } .-1 }
Please make the test name unique.
> + strcpy (t, a); // { dg-warning "writing 4 bytes
> into a region of size (between 0 and )?3 " }
> +
> + sink (t);
> + }
> +
> + {
> + const char a[] = "1234";
> + size_t n = strlen (a);
> + char *t = (char*)malloc (n); // { dg-message "at offset 0 to an
> object with size 4 allocated by 'malloc' here" "malloc note" { xfail *-*-* } }
> + // { dg-message "at offset 0 to an
> object with size at most 4 allocated by 'malloc' here" "malloc note" { target
> *-*-* } .-1 }
Likewise.
Andreas.
--
Andreas Schwab, SUSE Labs, sch...@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
