Bug 468145
| Summary: | regression: definition of system-.h-declared function disables all warnings | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Jim Meyering <meyering> |
| Component: | gcc4 | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED WONTFIX | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | 10 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2009-12-18 06:38:00 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 bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle. Changing version to '10'. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping This message is a reminder that Fedora 10 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 10. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '10'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 10's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 10 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora please change the 'version' of this bug to the applicable version. If you are unable to change the version, please add a comment here and someone will do it for you. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. The process we are following is described here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping Fedora 10 changed to end-of-life (EOL) status on 2009-12-17. Fedora 10 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed. |
Description of problem: When I define a function that is already declared in a system header file (same signature, of course), all warnings are disabled not only in that function, but any following function definitions in the same compilation unit. Version-Release number of selected component (if applicable): 4.3 and the latest in rawhide: gcc (GCC) 4.3.2 20081007 (Red Hat 4.3.2-6) How reproducible: always Steps to Reproduce: For example, with this code, cat <<'EOF' > k.c #include <stdlib.h> int clearenv (void) {} int bar (int i) { return 0; int j; return j; } EOF I would expect compiling with -W -Wall -Wdeclaration-after-statement to warn about the decl-after-stmt and the unused parameter, but get neither: $ gcc -O -W -Wall -Wdeclaration-after-statement -c k.c $ gcc --version gcc (GCC) 4.3.2 20081007 (Red Hat 4.3.2-6) gcc-4.2 does what I expect: $ gcc-4.2 -c -O -W -Wall -Wdeclaration-after-statement random_r.c random_r.c: In function 'srandom_r': random_r.c:4: warning: unused parameter 'seed' random_r.c:4: warning: unused parameter 'buf' random_r.c: In function 'bar': random_r.c:15: warning: ISO C90 forbids mixed declarations and code random_r.c:15: warning: unused variable 'i' Actual results: Expected results: Additional info: FYI, this is not theoretical. It bit me while writing gnulib's random_r module: the replacement implementation of srandom_r made it so legitimate warnings about code in subsequent functions were suppressed.