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[Bug stdio/23446] vfprintf() segfault with fmt "%m$n and %m$d" or "%m$s and %m$d" to a same parameter.
- From: "minhray3153 at 163 dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Tue, 24 Jul 2018 07:57:20 +0000
- Subject: [Bug stdio/23446] vfprintf() segfault with fmt "%m$n and %m$d" or "%m$s and %m$d" to a same parameter.
- Auto-submitted: auto-generated
- References: <bug-23446-131@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=23446
--- Comment #4 from Ming Yuan <minhray3153 at 163 dot com> ---
(In reply to Andreas Schwab from comment #1)
> Arguments must match the expected type. %n expects a pointer.
Or I can use the poc:
int main(){
int n = 0;
printf("%1$n%1$d\n", &n);
}
n is a pointer, but it also causes a crash.
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