Package: libmudflap0
Version: 4.0.3-1
Severity: important
Simple threaded or non-threaded C++ programs with bound violation
are caught (if not threaded) by -fmudflap, but not by -fmudflapth.
mudflapth is not functioning.
Example with a simple non-threaded program:
$ cat test.cpp
int main()
{
char x[10];
x[11] = 'a';
}
$ c++ test.cpp -o test -fmudflap -lmudflap
$ ./test
*******
mudflap violation 1 (check/write): time=1143196648.431873
ptr=0xbfd1ba46 size=12
pc=0xb7e16478 location=`test.cpp:4 (main)'
/usr/lib/libmudflap.so.0(__mf_check+0x48) [0xb7e16478]
./test(main+0xac) [0x80487f0]
/usr/lib/libmudflap.so.0(__wrap_main+0x1e4) [0xb7e17214]
Nearby object 1: checked region begins 0B into and ends 2B after
mudflap object 0x80cb248: name=`test.cpp:3 (main) char x [10]'
bounds=[0xbfd1ba46,0xbfd1ba4f] size=10 area=stack check=0r/3w liveness=3
alloc time=1143196648.431854 pc=0xb7e16fb8
number of nearby objects: 1
$ c++ test.cpp -o test -fmudflapth -lmudflapth -lpthread
/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libmudflapth.so:
warning: the use of
`pthread_attr_setstackaddr' is deprecated, use `pthread_attr_setstack'
/usr/lib/gcc/i486-linux-gnu/4.0.3/../../../../lib/libmudflapth.so:
warning: the use of
`pthread_attr_getstackaddr' is deprecated, use `pthread_attr_getstack'
$ ./test
Same behaviour for threaded examples.
Filippo Basso
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (500, 'testing'), (500, 'stable')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-phy
Locale: LANG=it_IT, LC_CTYPE=it_IT (charmap=ISO-8859-1)
Versions of packages libmudflap0 depends on:
ii gcc-4.0-base 4.0.3-1 The GNU Compiler Collection (base
ii libc6 2.3.6-3 GNU C Library: Shared libraries an
libmudflap0 recommends no packages.
-- no debconf information
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