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segfault while starting theide [message #8497]

Wed, 14 March 2007 14:51

piotr5
Messages: 107
Registered: November 2005

Experienced Member

there are 2 files which cause a segfault when compiled
speed-optimized. I solved the problem by compiling them
with a different gcc-option:

for Core/Vcont.cpp I need "-Os -finline-length=119", and
for RichText/ParaTypes.cpp I need "-Os -finline-length=141".

is my gcc-3.3.1 broken in the aspect of function-inlining?
or is it upp's fault? I guess I need a newer gcc...

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Re: segfault while starting theide [message #8546 is a reply to message #8497]

Fri, 16 March 2007 18:32

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

piotr5 wrote on Wed, 14 March 2007 09:51

-Os is _size_ optimization.

Interesting, recently Guido reported some problems with size optimizations too... With 4.x compiler of ubuntu 610, everything seems to work fine though...

Mirek

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Re: segfault while starting theide [message #8552 is a reply to message #8546]

Fri, 16 March 2007 22:54

ebojd
Messages: 225
Registered: January 2007
Location: USA

Experienced Member

As a note, I have been reading up on cross-platform problems with -fPIC and came across specific references regarding gcc-3.3. You might want to check into that. If it will not cause problems I would suggest upgrading your compiler to version 3.4 or possibly to the newest stable 4.1. Version 3.4 would likely be safest.

EBo --

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Re: segfault while starting theide [message #8617 is a reply to message #8552]

Wed, 21 March 2007 17:54

piotr5
Messages: 107
Registered: November 2005

Experienced Member

thanks for the interesting comments. I'd be interested in
reading up on these gcc-3.3 issues, since 3.3 is the last
release-series to support certain deprecated compiler-behaviour.

in the meantime I'll upgrade to 4.1.2 -- I just wish there
where some list of all open-source c++-libs so that I could
find each potential incompatibility beforehand...

as for the -Os, I know that it's size-optimization, and
strangely -O2 -finline-limit didn't work (is the latter
parameter ignored for -O2?).

so, dear ebojd, please give me some links or google-words
to find anything about problems with gcc-3.3, bugzilla
isn't very helpful when searching for particular bugs.
as a side-note, I did experience various problems with
optimization in gcc-3.3, but that was always with some
machine-dependant optimizations. so, maybe the actual
bug is within upp (probably some expected behaviour was
really undefined behaviour according to the gcc-developers
or something).

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Re: segfault while starting theide [message #8618 is a reply to message #8617]

Wed, 21 March 2007 19:40

ebojd
Messages: 225
Registered: January 2007
Location: USA

Experienced Member

Well, the first place I would look is the following URL which discusses gcc-3.4, but I have seen similar with 3.3. Sorry I did not keep careful notes. I'll post more if I recall them, but for now is the following:

http://www.gentoo.org/proj/en/base/amd64/howtos/index.xml?pa rt=1&chap=3

As a note, I have had no problems with U++ and gcc-4.1.1/glibc-2.5

Hope this helps.

EBo --

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