Package: valgrind
Version: 1:3.6.1-5
Severity: minor
Tags: patch
I get false positives with a simple use of strspn:
$ cat >foo.c <<'EOF'
#include <string.h>
int main(void)
{
char buf[32];
strcpy(buf, "foo");
if (strspn(buf, "o"))
return 0;
return 1;
}
EOF
$ gcc -g -o foo foo.c
$ valgrind ./foo
...
==5854== Conditional jump or move depends on uninitialised value(s)
==5854== at 0x4B3623E: __strspn_sse42 (strspn-c.c:142)
==5854== by 0x400509: main (foo.c:8)
...
Looks like it was reported elsewhere with a patch a few months ago:
https://bugs.kde.org/show_bug.cgi?id=270925
I tried the version of valgrind in experimental, but it shows the same
behavior.
-Peff
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.39-2-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages valgrind depends on:
ii libc6 2.13-7 Embedded GNU C Library: Shared lib
ii libc6-dbg 2.13-7 Embedded GNU C Library: detached d
Versions of packages valgrind recommends:
ii gdb 7.2-1 The GNU Debugger
Versions of packages valgrind suggests:
pn alleyoop <none> (no description available)
pn kcachegrind <none> (no description available)
pn valkyrie <none> (no description available)
-- no debconf information
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