Brandon Casey <drafnel@xxxxxxxxx> writes:
> Perhaps something like:
>
> diff --git a/usage.c b/usage.c
> index a2a6678..2d0ff35 100644
> --- a/usage.c
> +++ b/usage.c
> @@ -80,8 +80,15 @@ void NORETURN usage(const char *err)
>
> void NORETURN die(const char *err, ...)
> {
> + static int dying;
> va_list params;
>
> + if (dying) {
> + fputs("fatal: recursion detected in die handler\n", stderr);
> + exit(128);
> + }
> + dying = 1;
> +
> va_start(params, err);
> die_routine(err, params);
> va_end(params);
> @@ -89,11 +96,18 @@ void NORETURN die(const char *err, ...)
>
> void NORETURN die_errno(const char *fmt, ...)
> {
> + static int dying;
> va_list params;
> char fmt_with_err[1024];
> char str_error[256], *err;
> int i, j;
>
> + if (dying) {
> + fputs("fatal: recursion detected in die handler\n", stderr);
> + exit(128);
> + }
> + dying = 1;
> +
> err = strerror(errno);
> for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) {
> if ((str_error[j++] = err[i++]) != '%')
With two function-scope static, you can go like this:
die()
-> die_routine()
-> xsomething()
-> die_errno()
-> die_routine()
-> xsomethingelse()
-> die() or die_errno()
Not that we probably care too deeply about, as at least we won't
infinitely recurse and die out of stack space.
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