| Summary: | glibc: iszero macro defined in <math.h> breaks existing code | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Paulo Andrade <paulo.cesar.pereira.de.andrade> |
| Component: | glibc | Assignee: | Florian Weimer <fweimer> |
| Status: | CLOSED RAWHIDE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | rawhide | CC: | arjun.is, codonell, davejohansen, dj, fweimer, jakub, jwakely, law, mfabian, mpolacek, pfrankli, siddhesh |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | glibc-2.24.90-12.fc26 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-10-20 20:21:36 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: | |
| Bug Depends On: | |||
| Bug Blocks: | 1384001 | ||
This is an intentional upstream change. It does not seem wise to deviate from upstream, even if the change causes compatibility issues. I have already raised my concerns upstream, independently of this bug. We will have to wait and see what happens. Patch posted upstream: https://sourceware.org/ml/libc-alpha/2016-10/msg00353.html The upstream fix will be picked up by the next rawhide import. |
$ rpm -q glibc cpp glibc-2.24.90-11.fc26.x86_64 cpp-6.2.1-2.fc26.x86_64 $ cat t.cc #include <math.h> int iszero(); $ cpp t.cc | tail -5 int # 2 "t.cc" 3 4 (((__typeof ()) ()) == 0) # 2 "t.cc" ; A few other macros appear to get expanded as well.