Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxx> writes:
> I think that, after some testing, this (or something like it) is the
> best that we can do. What do you think?
>
> ATB,
> Ramsay Jones
>
> -- >8 --
> Subject: [PATCH] test-regex: Add a test to check for a bug in the regex routines
>
> Signed-off-by: Ramsay Jones <ramsay@xxxxxxxxxxxxxxxxxxx>
> ---
> diff --git a/t/t0070-fundamental.sh b/t/t0070-fundamental.sh
> index 9bee8bf..da2c504 100755
> --- a/t/t0070-fundamental.sh
> +++ b/t/t0070-fundamental.sh
> @@ -25,4 +25,9 @@ test_expect_success POSIXPERM 'mktemp to unwritable directory prints filename' '
> grep "cannotwrite/test" err
> '
>
> +test_expect_success 'check for a bug in the regex routines' '
> + # if this test fails, re-build git with NO_REGEX=1
> + test-regex
> +'
OK.
> test_done
> diff --git a/test-regex.c b/test-regex.c
> new file mode 100644
> index 0000000..9259985
> --- /dev/null
> +++ b/test-regex.c
> @@ -0,0 +1,35 @@
> +#include <stdlib.h>
> +#include <stdio.h>
> +#include <stdarg.h>
> +#include <sys/types.h>
> +#include <regex.h>
> +
> +static void die(const char *fmt, ...)
> +{
> + va_list p;
> +
> + va_start(p, fmt);
> + vfprintf(stderr, fmt, p);
> + va_end(p);
> + fputc('\n', stderr);
> + exit(128);
> +}
Looks like a bit of overkill for only two call sites, whose output
we would never see because it is behind the test, but OK.
> +int main(int argc, char **argv)
> +{
> + char *pat = "[^={} \t]+";
> + char *str = "={}\nfred";
> + regex_t r;
> + regmatch_t m[1];
> +
> + if (regcomp(&r, pat, REG_EXTENDED | REG_NEWLINE))
> + die("failed regcomp() for pattern '%s'", pat);
> + if (regexec(&r, str, 1, m, 0))
> + die("no match of pattern '%s' to string '%s'", pat, str);
> +
> + /* http://sourceware.org/bugzilla/show_bug.cgi?id=3957 */
> + if (m[0].rm_so == 3) /* matches '\n' when it should not */
> + exit(1);
This could be the third call site of die() that tells the user to
build with NO_REGEX=1. Then "cd t && sh t0070-fundamental.sh -i -v" would
give that message directly to the user.
> + exit(0);
> +}
Thanks.
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