Launchpad has imported 2 comments from the remote bug at http://sourceware.org/bugzilla/show_bug.cgi?id=5441.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2007-12-03T15:29:09+00:00 Aurelien Jarno wrote: The following code does not work anymore on glibc 2.7, while it was working on glibc 2.6: #include <stdio.h> int main() { char *buf = " "; char *str; sscanf (buf, "%as", &str); printf("%p\n", str); return 0; } Instead the glibc now reports an invalid pointer: *** glibc detected *** ./test: munmap_chunk(): invalid pointer: 0x00007fffe37dd8c0 *** ======= Backtrace: ========= /lib/libc.so.6(cfree+0x1b6)[0x2b8ac7560d06] /lib/libc.so.6(_IO_vfscanf+0x239f)[0x2b8ac753e29f] /lib/libc.so.6(vsscanf+0x75)[0x2b8ac754ec85] /lib/libc.so.6(_IO_sscanf+0x88)[0x2b8ac75498b8] ./test[0x4004bf] /lib/libc.so.6(__libc_start_main+0xf4)[0x2b8ac75071c4] ./test[0x400409] ======= Memory map: ======== 00400000-00401000 r-xp 00000000 08:02 2392545 /tmp/test 00600000-00601000 rw-p 00000000 08:02 2392545 /tmp/test 00601000-00622000 rw-p 00601000 00:00 0 [heap] 2b8ac72cb000-2b8ac72e8000 r-xp 00000000 08:02 6669895 /lib/ld-2.7.so 2b8ac72e8000-2b8ac72eb000 rw-p 2b8ac72e8000 00:00 0 2b8ac74e7000-2b8ac74e9000 rw-p 0001c000 08:02 6669895 /lib/ld-2.7.so 2b8ac74e9000-2b8ac763d000 r-xp 00000000 08:02 6669873 /lib/libc-2.7.so 2b8ac763d000-2b8ac783d000 ---p 00154000 08:02 6669873 /lib/libc-2.7.so 2b8ac783d000-2b8ac7840000 r--p 00154000 08:02 6669873 /lib/libc-2.7.so 2b8ac7840000-2b8ac7842000 rw-p 00157000 08:02 6669873 /lib/libc-2.7.so 2b8ac7842000-2b8ac7848000 rw-p 2b8ac7842000 00:00 0 2b8ac7848000-2b8ac7855000 r-xp 00000000 08:02 21217454 /lib/libgcc_s.so.1 2b8ac7855000-2b8ac7a55000 ---p 0000d000 08:02 21217454 /lib/libgcc_s.so.1 2b8ac7a55000-2b8ac7a56000 rw-p 0000d000 08:02 21217454 /lib/libgcc_s.so.1 7fffe37ca000-7fffe37df000 rw-p 7fffe37ca000 00:00 0 [stack] ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vdso] Reply at: https://bugs.launchpad.net/glibc/+bug/178045/comments/0 ------------------------------------------------------------------------ On 2007-12-07T16:50:59+00:00 Drepper-fsp wrote: Changed in cvs. Reply at: https://bugs.launchpad.net/glibc/+bug/178045/comments/1 ** Changed in: glibc Importance: Unknown => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/178045 Title: [Hardy 8.04 Alpha-2] "Check CD for Defects" does not work. (Fixed in 8.04 Alpha-3.) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
