Bug 183386
| Summary: | Non-POD data in switch outside block causes internal compiler error | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | David Resnick <lndresnick> |
| Component: | gcc3 | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3.0 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | 3.2.3-54 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2006-03-15 17:22:52 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: | |||
Can't reproduce with RHEL3 U7:
g++ -v; g++ -Wall -o 183386{,.C}; echo $?
Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2.3/specs
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man
--infodir=/usr/share/info --enable-shared --enable-threads=posix
--disable-checking --with-system-zlib --enable-__cxa_atexit
--host=i386-redhat-linux
Thread model: posix
gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-54)
183386.C: In function `int main()':
183386.C:9: jump to case label
183386.C:7: crosses initialization of `std::string bar'
183386.C:9: warning: destructor needed for `std::string bar'
183386.C:9: warning: where case label appears here
183386.C:9: warning: (enclose actions of previous case statements requiring
destructors in their own scope.)
1
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From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.0.1) Gecko/20060111 Firefox/1.5.0.1 Description of problem: Below is an example of something I hit in my code. Not a big deal, repair my bad code by putting the case with the declaration in a block. I see from the C++ standard that jumping (goto or switch) across a non-POD declaration (or any declaration with an initializer) is forbidden. Just a bit surprised to see the compiler report an internal error on it. Note that if instead of a std::string it is a POD type declared in the case statement, the warning is still there about crossing initialization but not the internal compiler error. temp(1552)$ g++ --version g++ (GCC) 3.2.3 20030502 (Red Hat Linux 3.2.3-34) temp(1551)$ cat foo.cpp #include <string> int main(void) { int i = 4; switch (i) { case 1: std::string bar="quux"; break; default: break; } return 0; } temp(1550)$ g++ -Wall -o foo foo.cpp foo.cpp: In function `int main()': foo.cpp:11: jump to case label foo.cpp:9: crosses initialization of `std::string bar' Internal compiler error: Error reporting routines re-entered. Please submit a full bug report, with preprocessed source if appropriate. Version-Release number of selected component (if applicable): gcc-3.2.3-34 How reproducible: Always Steps to Reproduce: 1. See Description above for C++ program and compiler args used 2. 3. Actual Results: I saw this: Internal compiler error: Error reporting routines re-entered. Expected Results: Error message is fine. Just surprised to see an internal compiler error. Additional info: