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Minor bug in *wscanf in 2.2.4

From: Jason Merrill
Subject: Minor bug in *wscanf in 2.2.4
Date: Tue, 26 Feb 2002 14:27:37 +0000
User-agent: Gnus/5.090004 (Oort Gnus v0.04) Emacs/21.1 (i686-pc-linux-gnu)

In the following testcase, swscanf should return '0', as the scanset does
not match any of the input characters.  Instead, it returns 1 and sets
buf[0] to 0.  The non-wide *scanf functions do not seem to have this bug.

Seen with Red Hat glibc-2.2.4-19.3 rpm.

#include <wchar.h>

int main ()
  wchar_t buf[10];
  return swscanf (L"foo", L"%[q]", buf);

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