musl - getopt_long

Message-ID: <20180426104630.GR4418@port70.net>
Date: Thu, 26 Apr 2018 12:46:31 +0200
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: getopt_long_only bug

i got the following bug report:

$ cat a.c
#include <stdio.h>
#include <getopt.h>

int main()
{
	struct option lo[] =
	{
		{"emit-relocs", no_argument, NULL, 'q'},
		{"qmagic", no_argument, NULL, 'Q'},
		{ 0 }
	};

	int li = -1;
	char* a[] = { "", "-q", NULL };
	int c = getopt_long_only(2, a, "q", lo, &li);

	printf("c=%c/%i\n", c, c);

	return 0;
}
$ ./a.musl
c=Q/81
$ ./a.glibc
c=q/113

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