Note: This is a beta release of Red Hat Bugzilla 5.0. The data contained within is a snapshot of the live data so any changes you make will not be reflected in the production Bugzilla. Also email is disabled so feel free to test any aspect of the site that you want. File any problems you find or give feedback here.

Bug 6284

Summary: fclose(NULL) causes segmentation error
Product: [Retired] Red Hat Linux Reporter: Andrew Wiseman <a.wiseman>
Component: libcAssignee: Cristian Gafton <gafton>
Status: CLOSED NOTABUG QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: 5.2   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2000-01-06 21:07:18 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Description Andrew Wiseman 1999-10-23 10:49:56 UTC
When I compile and run the example program shown below,
under RedHat Linux 5.2 (Kernel 2.0.36) with gcc
(v2.7.2.3), I get a segmentation error. The same code has
been run on many other Unix systems and even other versions
of Linux without failure. Granted fclose(NULL) is not a
useful thing to do, but nevertheless it should not cause a
segmentation error.

main()
{
     long *file_rep = 0x0;
     fclose(file_rep);
}

Comment 1 Cristian Gafton 2000-01-06 21:07:59 UTC
This is a programming error. POSIX says that the behavior is unspecified. And
glibc segfaults to signal a major error in a program, and it is also withing
POSIX's specification.