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Troubleshooting crashes: Difference between revisions
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→Debugging Segfaults & Obtaining Backtraces: http://sourceforge.net/p/flightgear/mailman/message/32749837/
(→Minimal startup profile: Added batch file (thanks to User:Hooray for the tip)) |
m (→Debugging Segfaults & Obtaining Backtraces: http://sourceforge.net/p/flightgear/mailman/message/32749837/) |
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valgrind et all are great if you know how to use them, but for end users, these tools are too fine-grained, we would ideally support some per-subsystem or per-feature granularity for end users. | valgrind et all are great if you know how to use them, but for end users, these tools are too fine-grained, we would ideally support some per-subsystem or per-feature granularity for end users. | ||
== Using AddressSanitizer == | |||
{{FGCquote | |||
|AddressSanitizer does a similar job to Valgrind with less overhead <br/> | |||
(~2.5x memory use, and nearly full speed), but requires recompiling; I <br/> | |||
haven't seen the crash under it yet (or at all today), if anyone does <br/> | |||
please post your log. | |||
|{{cite web |url=http://sourceforge.net/p/flightgear/mailman/message/32749837/ | |||
|title=<nowiki>Re: [Flightgear-devel] crash in SGPropertyNode::fireValueChanged</nowiki> | |||
|author=<nowiki>Rebecca Palmer</nowiki> | |||
|date=<nowiki>2014-08-22</nowiki> | |||
}} | |||
}} | |||
<syntaxhighlight lang="bash"> | |||
#this is for Linux with llvm-3.4, libsqlite3-dev, flite1-dev, libhtsengine-dev; it will probably work on Mac (with possibly different ASAN_SYMBOLIZER_PATH) but not Windows | |||
#simgear | |||
cmake ../../git/simgear -DCMAKE_BUILD_TYPE=RelWithDebInfo | |||
-DCMAKE_C_FLAGS="-fsanitize=address -fno-omit-frame-pointer -O2 -g" | |||
-DCMAKE_CXX_FLAGS="-fsanitize=address -fno-omit-frame-pointer -O2 -g" | |||
-DCMAKE_SHARED_LINKER_FLAGS="-fsanitize=address -fno-omit-frame-pointer | |||
-O2 -g" -DCMAKE_VERBOSE_MAKEFILE=1 -DSIMGEAR_SHARED=ON | |||
make | |||
sudo make install | |||
#flightgear | |||
cmake ../../git/flightgear -DCMAKE_BUILD_TYPE=RelWithDebInfo | |||
-DCMAKE_C_FLAGS="-fsanitize=address -fno-omit-frame-pointer -O2 -g" | |||
-DCMAKE_CXX_FLAGS="-fsanitize=address -fno-omit-frame-pointer -O2 -g" | |||
-DCMAKE_VERBOSE_MAKEFILE=1 -DSIMGEAR_SHARED=ON -DENABLE_IAX=OFF | |||
-DENABLE_FGCOM=OFF -DSYSTEM_SQLITE=ON | |||
make | |||
sudo make install | |||
#run | |||
ASAN_SYMBOLIZER_PATH=/usr/lib/llvm-3.4/bin/llvm-symbolizer | |||
ASAN_OPTIONS="symbolize=1 alloc_dealloc_mismatch=0" fgfs [options] 2> | |||
asan_log.txt | |||
#post asan_log.txt to developers mailing list and/or the issue tracker | |||
</syntaxhighlight> | |||
== The original idea and future developments == | == The original idea and future developments == | ||