Bug 470741 - gcc optimizer error (on very straightforward routine)
gcc optimizer error (on very straightforward routine)
Product: Fedora
Classification: Fedora
Component: gcc (Show other bugs)
i686 Linux
medium Severity high
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Assigned To: Jakub Jelinek
Fedora Extras Quality Assurance
Depends On:
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Reported: 2008-11-09 17:22 EST by Michael Parkinson
Modified: 2009-07-14 10:11 EDT (History)
2 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2009-07-14 10:11:57 EDT
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Attachments (Terms of Use)
three parts: header file, source code, gcc error report (33.04 KB, text/plain)
2008-11-09 17:22 EST, Michael Parkinson
no flags Details

  None (edit)
Description Michael Parkinson 2008-11-09 17:22:55 EST
Created attachment 323028 [details]
three parts: header file, source code, gcc error report

Description of problem: With any optimization level grater than 0, gcc fails to compile a fairly straightforward main program with lots of declarations, but very little real work.

Version-Release number of selected component (if applicable):
gcc (GCC) 4.3.0 20080428 (Red Hat 4.3.0-8)

How reproducible: The code is embedded in the error file attached.  The
first part of the file is f2c.h; the second part is bpmain.c; and the
third part is the gcc error file.  The routine is called bpmain.c, and resulted from f2c on bpmain.f, a f77 routine which is part of the bpmpd linear programming package. (Just as an aside, the current Intel C compiler handles this without any problems).

There isn't much to optimize, but on the other hand, when it doesn't have much to do, it shouldn't bomb!

Steps to Reproduce:
1. gcc -O1 -c bpmain.c (fails)
2. gcc -O2 -c bpmain.c (fails)
3. gcc -O3 -c bpmain.c (fails)
4. gcc -O0 -c bpmain.c  (works)

Additional info: the workaround, of course, was to change the makefile so that bpmain was compiled with -O0
Comment 1 Bug Zapper 2009-06-09 23:13:33 EDT
This message is a reminder that Fedora 9 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
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Comment 2 Bug Zapper 2009-07-14 10:11:57 EDT
Fedora 9 changed to end-of-life (EOL) status on 2009-07-10. Fedora 9 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no longer maintained, which means that it will not receive any further 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.

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