Bug#668581: gcc-4.6: scanf() wrong read on 08 09 integers

[Teodor <mteodor@gmail.com>]

Package: gcc-4.6
Version: 4.6.3-3
Severity: normal

Hi,

I was debugging a more complex problem and noticed that not all
input values were read. Further inspection showed that input
integers "08" and "09" (read from a file) were not correctly
recognised by fscanf() as two integers (8 and 9) but as four
integers (0 8 0 9). I've attached a minimal test C program
and a test file. After compile execute:
$ ./tscanf0809 < tscanf0809.txt

Thanks


-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=ro_RO.utf8, LC_CTYPE=ro_RO.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gcc-4.6 depends on:
ii  binutils      2.22-6
ii  cpp-4.6       4.6.3-3
ii  gcc-4.6-base  4.6.3-3
ii  libc6         2.13-27
ii  libgcc1       1:4.7.0-3
ii  libgmp10      2:5.0.4+dfsg-1
ii  libgomp1      4.7.0-3
ii  libmpc2       0.9-4
ii  libmpfr4      3.1.0-4
ii  libquadmath0  4.7.0-3
ii  zlib1g        1:1.2.6.dfsg-2

Versions of packages gcc-4.6 recommends:
ii  libc6-dev  2.13-27

Versions of packages gcc-4.6 suggests:
pn  binutils-gold        <none>
pn  gcc-4.6-doc          <none>
pn  gcc-4.6-locales      4.6.3-3
pn  gcc-4.6-multilib     <none>
pn  libgcc1-dbg          1:4.7.0-3
pn  libgomp1-dbg         <none>
pn  libmudflap0-4.6-dev  <none>
pn  libmudflap0-dbg      <none>
pn  libquadmath0-dbg     <none>

-- no debconf information

#include <stdio.h>

int main(void)
{
	int n;

	while (1 == scanf("%i", &n))
		printf("n = %i\n", n);
	return 0;
}

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01 02 03 04 05 06 07 08 09 10