Bug 833476
| Summary: | AC_C_CONST misbehaves with GCC resulting in redefining const symbol to empty expression | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Petr Pisar <ppisar> |
| Component: | autoconf | Assignee: | Pavel Raiskup <praiskup> |
| Status: | CLOSED WORKSFORME | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 16 | CC: | karsten |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| URL: | http://lists.gnu.org/archive/html/bug-autoconf/2011-09/msg00002.html | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-01-14 11:13:06 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Petr Pisar
2012-06-19 14:34:32 UTC
(In reply to comment #0) > radvd-1.9 calls AC_C_CONST from configure.ac. The macro results GCC does not > support const qualifier properly and redefines it to empty symbol removing > all const qualifiers from the code effectively; config.h: > > /* Define to empty if `const' does not conform to ANSI C. */ > #define const /**/ Hi Petr, could you please give me more info how to reproduce this issue? > The bug has been already discussed on autoconf mailing list > (http://lists.gnu.org/archive/html/bug-autoconf/2011-09/msg00002.html) but > no fix has gotten yet into any release. Based on mentioned thread, this should be related to '-Werror' CFLAG. I tried to download: radvd-1.9.2.tar.gz (5bc39b7bec0d73ffa443634c340e75b54867766c) .. and no problem there, even with: CFLAGS="-Werror -O2 -g" ./configure > Tested with autoconf-2.68-2.fc15.noarch, gcc-4.6.3-2.fc16.x86_64. Same here: $ rpm -q autoconf gcc autoconf-2.68-2.fc15.noarch gcc-4.6.3-2.fc16.x86_64 (In reply to comment #1) > (In reply to comment #0) > > radvd-1.9 calls AC_C_CONST from configure.ac. The macro results GCC does not > > support const qualifier properly and redefines it to empty symbol removing > > all const qualifiers from the code effectively; config.h: > > > > /* Define to empty if `const' does not conform to ANSI C. */ > > #define const /**/ > > Hi Petr, could you please give me more info how to reproduce this issue? > I cannot reproduce it now either. I don't know what has changed. > > The bug has been already discussed on autoconf mailing list > > (http://lists.gnu.org/archive/html/bug-autoconf/2011-09/msg00002.html) but > > no fix has gotten yet into any release. > > Based on mentioned thread, this should be related to '-Werror' CFLAG. > > I tried to download: > > radvd-1.9.2.tar.gz (5bc39b7bec0d73ffa443634c340e75b54867766c) > > .. and no problem there, even with: > Because radvd removed calling AC_C_CONST in 1.9.2 based on my report about this bug. Try older version. E.g. 1.9. (In reply to comment #2) > (In reply to comment #1) > > (In reply to comment #0) > > > radvd-1.9 calls AC_C_CONST from configure.ac. The macro results GCC does not > > > support const qualifier properly and redefines it to empty symbol removing > > > all const qualifiers from the code effectively; config.h: > > > > > > /* Define to empty if `const' does not conform to ANSI C. */ > > > #define const /**/ > > > > Hi Petr, could you please give me more info how to reproduce this issue? > > > I cannot reproduce it now either. I don't know what has changed. > > > > The bug has been already discussed on autoconf mailing list > > > (http://lists.gnu.org/archive/html/bug-autoconf/2011-09/msg00002.html) but > > > no fix has gotten yet into any release. > > > > Based on mentioned thread, this should be related to '-Werror' CFLAG. > > > > I tried to download: > > > > radvd-1.9.2.tar.gz (5bc39b7bec0d73ffa443634c340e75b54867766c) > > > > .. and no problem there, even with: > > > Because radvd removed calling AC_C_CONST in 1.9.2 based on my report about > this bug. Try older version. E.g. 1.9. Yes, I tried it already before (no symptoms) — I should note it here, sorry. I checked: http://www.litech.org/radvd/dist/radvd-1.9.tar.gz and http://www.litech.org/radvd/dist/radvd-1.9.2.tar.gz As we both are not able to reproduce it, I tend to closing this as WORKSFORME. Anybody - feel free to reopen this bug once you hit this problem again. Thanks for the report, Pavel |