Bug 178061
| Summary: | g++ segfaults on typename | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Ethan Tira-Thompson <ejt> | ||||
| Component: | gcc | Assignee: | Jakub Jelinek <jakub> | ||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | |||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 3 | ||||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i386 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | 3.4.5-2 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2006-01-17 21:41:52 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: | |||||||
| Attachments: |
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Created attachment 123317 [details]
preprocessed source for the bug
Please note that removing the 'typename' keyword simply avoids the crash -- I realize that the code shown will then result in a compilation error. The key is that it should give the error and not segfault. If that is resolved, I expect it would successfully compile if the full code were being compiled instead of this minimal snippet. g++ -v; g++ 178061.ii Reading specs from /usr/lib/gcc/i386-redhat-linux/3.4.5/specs Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --enable-shared --enable-threads=posix --disable-checking --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-java-awt=gtk --host=i386-redhat-linux Thread model: posix gcc version 3.4.5 20051201 (Red Hat 3.4.5-2) foo.cc: In function `void foo()': foo.cc:5: error: `baz' was not declared in this scope foo.cc:5: error: there are no arguments to `bar' that depend on a template parameter, so a declaration of `bar' must be available foo.cc:5: error: (if you use `-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated) I don't have FC3 gcc around to check it (FC3 support has been moved to Fedora Legacy already), but as you can see with the latest GCC 3.4.x-RH this is not reproducible, neither I can reproduce it with GCC 4.0.x (FC4) nor GCC 4.1.x (rawhide). But even latest FC3 gcc is gcc-3.4.4-2.fc3, so it is quite likely it is fixed there too. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/416.12 (KHTML, like Gecko) Safari/416.13 Description of problem: here is the code which causes the crash: ==================== #include <vector> template<class PredType> void foo() { bar(typename std::back_insert_iterator<std::vector<int> >(baz)); } ==================== Removing the 'typename' avoids the segfault Version-Release number of selected component (if applicable): gcc 3.4.2 How reproducible: Always Steps to Reproduce: 1. 2. 3. Additional info: