Bug 116972
| Summary: | freopen causes SIGSEGV on process exit | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Quentin Armitage <quentin.armitage> |
| Component: | compat-gcc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3.0 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2004-05-12 03:33:36 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
The reason seems to be a bug in compat-glibc which doesn't have STB_WEAK SHN_UNDEF _IO_stdin_used symbol in libc_real.so's .dynsym. This means that the resulting program is not marked as using glibc 2.1+ libio. Should be fixed in compat-glibc-7.x-2.2.4.32.6. It will be part of RHEL3 Update 2.
Here are the changes:
begin 664 compat-glibc.spec.diff
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`
end
An errata has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2004-141.html |
Description of problem: With the compat-gcc compiler and libraries, freopen causes a SIGSEGV when the process exits (i.e. not at the time of calling freopen, but when exit (0) is called. The problem does not occur when using gcc version 3.2.3. Source code of fred.c: ====================================================== #include <stdio.h> main ( int argc, char **argv ) { if ( argc > 1 ) { if ( freopen ( argv[1], "r", stdin ) == NULL ) { fprintf ( stderr, "Unable to open %s\n", argv [1] ) ; exit ( 2 ) ; } } printf ( "Exitting\n" ) ; } ========================================== makefile: ========================================== CC296=gcc296 -I /usr/lib/i386-redhat-linux7/include -B /usr/lib/i386- redhat-linux7/lib/ -g fred: fred.c fred296: fred.c $(CC296) -O -o fred296 fred.c ========================================== Running with the various options produces the following results: > fred fred.c Exitting > fred296 fred.c Exitting Segmentation fault > fred296 <fred.c Exitting > Please note that we need to use the compat-gcc and libraries due to using the Informix SDK version 2.81 whose libraries where built on RedHat version 7.1 (using the following versions: 1. The Informix product was built and tested on Red Hat 7.1 (Linux 2.4.2-5.0-MVFS #3 SMP i686, Glibc 2.2.2-10) using gcc version egcs - 2.95.3 20010315. Version-Release number of selected component (if applicable): compat-gcc-7.3-2.96.123 How reproducible: Every time Steps to Reproduce: 1. Build fred296 with command "make fred296" 2. Execute command "fred fred.c" 3. Actual results: > fred296 fred.c Exitting Segmentation fault Expected results: > fred296 fred.c Exitting Additional info: