libmudflap reports invalid reads when the result of localeconv() is accessed:
lconv.c:
=============================================================
#include <stdio.h>
#include <locale.h>
int
main(void)
{
struct lconv *lc;
lc = localeconv();
printf("%s\n", lc->grouping);
return 0;
}
=============================================================
Compiled with:
gcc-4.3 -Wall -W -O2 -fmudflap -o lconv lconv.c -lmudflap
Output:
*******
mudflap violation 1 (check/read): time=1266169553.865149 ptr=0x7fda790a80c0
size=24
pc=0x7fda790b63d1 location=`lconv.c:11:2 (main)'
/usr/lib/libmudflap.so.0(__mf_check+0x41) [0x7fda790b63d1]
./lconv(main+0x8f) [0x400aaf]
/lib/libc.so.6(__libc_start_main+0xe6) [0x7fda78d59466]
Nearby object 1: checked region begins 1929B after and ends 1952B after
mudflap object 0xc83770: name=`stderr'
bounds=[0x7fda790a7860,0x7fda790a7937] size=216 area=static check=0r/0w
liveness=0
alloc time=1266169553.865140 pc=0x7fda790b6d71
Nearby object 2: checked region begins 2153B after and ends 2176B after
mudflap object 0xc836b0: name=`stdout'
bounds=[0x7fda790a7780,0x7fda790a7857] size=216 area=static check=0r/0w
liveness=0
alloc time=1266169553.865140 pc=0x7fda790b6d71
number of nearby objects: 2
--
Summary: libmudflap: errors when accessing struct lconv members
Product: gcc
Version: 4.3.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libmudflap
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: stefan-usenet at bytereef dot org
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43063
