Bug 677486 - Version 2.13 of glibc causes Valgrind to complain about uninitialized variables when executing any program.
Summary: Version 2.13 of glibc causes Valgrind to complain about uninitialized variabl...
Keywords:
Status: CLOSED DUPLICATE of bug 676785
Alias: None
Product: Fedora
Classification: Fedora
Component: valgrind
Version: 14
Hardware: x86_64
OS: Linux
unspecified
medium
Target Milestone: ---
Assignee: Jakub Jelinek
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-02-14 23:46 UTC by James
Modified: 2011-02-16 03:32 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-02-16 03:32:43 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description James 2011-02-14 23:46:25 UTC
Description of problem:
With the previous version of glibc, compiling an empty C program with g++ would result in zero warnings in Valgrind. With version 2.13, any program will cause numerous "Conditional jump or move depends on uninitialized value(s)" warnings. These warnings appear regardless on the contents of the C program.

Version-Release number of selected component (if applicable):
glibc-2.13


How reproducible/Steps to Reproduce:
>valgrind ls

 
Actual results:
==3968== Memcheck, a memory error detector
==3968== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
==3968== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info
==3968== Command: ./a.out
==3968== 
==3968== Conditional jump or move depends on uninitialised value(s)
==3968==    at 0x33A1416AA6: index (in /lib64/ld-2.13.so)
==3968==    by 0x33A1407084: expand_dynamic_string_token (in /lib64/ld-2.13.so)
==3968==    by 0x33A14078E9: _dl_map_object (in /lib64/ld-2.13.so)
==3968==    by 0x33A140126D: map_doit (in /lib64/ld-2.13.so)
==3968==    by 0x33A140DC65: _dl_catch_error (in /lib64/ld-2.13.so)
==3968==    by 0x33A1401186: do_preload (in /lib64/ld-2.13.so)
==3968==    by 0x33A1403FC8: dl_main (in /lib64/ld-2.13.so)
==3968==    by 0x33A141465A: _dl_sysdep_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A14048C0: _dl_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A1400B27: ??? (in /lib64/ld-2.13.so)
==3968== 
==3968== Conditional jump or move depends on uninitialised value(s)
==3968==    at 0x33A1416AAB: index (in /lib64/ld-2.13.so)
==3968==    by 0x33A1407084: expand_dynamic_string_token (in /lib64/ld-2.13.so)
==3968==    by 0x33A14078E9: _dl_map_object (in /lib64/ld-2.13.so)
==3968==    by 0x33A140126D: map_doit (in /lib64/ld-2.13.so)
==3968==    by 0x33A140DC65: _dl_catch_error (in /lib64/ld-2.13.so)
==3968==    by 0x33A1401186: do_preload (in /lib64/ld-2.13.so)
==3968==    by 0x33A1403FC8: dl_main (in /lib64/ld-2.13.so)
==3968==    by 0x33A141465A: _dl_sysdep_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A14048C0: _dl_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A1400B27: ??? (in /lib64/ld-2.13.so)
==3968== 
==3968== Conditional jump or move depends on uninitialised value(s)
==3968==    at 0x33A140ADA2: _dl_relocate_object (in /lib64/ld-2.13.so)
==3968==    by 0x33A1403295: dl_main (in /lib64/ld-2.13.so)
==3968==    by 0x33A141465A: _dl_sysdep_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A14048C0: _dl_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A1400B27: ??? (in /lib64/ld-2.13.so)
==3968== 
==3968== Conditional jump or move depends on uninitialised value(s)
==3968==    at 0x33A140ADAB: _dl_relocate_object (in /lib64/ld-2.13.so)
==3968==    by 0x33A1403295: dl_main (in /lib64/ld-2.13.so)
==3968==    by 0x33A141465A: _dl_sysdep_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A14048C0: _dl_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A1400B27: ??? (in /lib64/ld-2.13.so)
==3968== 
==3968== Conditional jump or move depends on uninitialised value(s)
==3968==    at 0x33A140ADA2: _dl_relocate_object (in /lib64/ld-2.13.so)
==3968==    by 0x33A14034A5: dl_main (in /lib64/ld-2.13.so)
==3968==    by 0x33A141465A: _dl_sysdep_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A14048C0: _dl_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A1400B27: ??? (in /lib64/ld-2.13.so)
==3968== 
==3968== Conditional jump or move depends on uninitialised value(s)
==3968==    at 0x33A140ADAB: _dl_relocate_object (in /lib64/ld-2.13.so)
==3968==    by 0x33A14034A5: dl_main (in /lib64/ld-2.13.so)
==3968==    by 0x33A141465A: _dl_sysdep_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A14048C0: _dl_start (in /lib64/ld-2.13.so)
==3968==    by 0x33A1400B27: ??? (in /lib64/ld-2.13.so)
==3968== 
==3968== 
==3968== HEAP SUMMARY:
==3968==     in use at exit: 0 bytes in 0 blocks
==3968==   total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==3968== 
==3968== All heap blocks were freed -- no leaks are possible
==3968== 
==3968== For counts of detected and suppressed errors, rerun with: -v
==3968== Use --track-origins=yes to see where uninitialised values come from
==3968== ERROR SUMMARY: 6 errors from 6 contexts (suppressed: 0 from 0)



Expected results:
==3968== Memcheck, a memory error detector
==3968== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
==3968== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info
==3968== Command: ./a.out
==3968== 
==3968== 
==3968== HEAP SUMMARY:
==3968==     in use at exit: 0 bytes in 0 blocks
==3968==   total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==3968== 
==3968== All heap blocks were freed -- no leaks are possible
==3968== 
==3968== For counts of detected and suppressed errors, rerun with: -v
==3968== Use --track-origins=yes to see where uninitialised values come from
==3968== ERROR SUMMARY: 0 errors from 6 contexts (suppressed: 0 from 0)


Additional info:
Compiling
int main(int argc, char * argv[])
{
  return 0;
}

causes the same result.

Comment 1 James 2011-02-16 03:32:43 UTC
Closed as duplicate

*** This bug has been marked as a duplicate of bug 676785 ***


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