Bug 6284
| Summary: | fclose(NULL) causes segmentation error | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Andrew Wiseman <a.wiseman> |
| Component: | libc | Assignee: | 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: | --- | Target Upstream Version: | |
| Embargoed: | |||
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. |
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); }