On Tue, 13 Jul 2010 21:38:09 +0000, Graham St Jack wrote: > On Tue, 13 Jul 2010 03:55:08 -0400, bearophile wrote: > >> Graham St Jack: >>> How do I profile a D2 program? When I try -profile in dmd, the >>> resultant executable crashes with a segfault when I try to run it. >> >> Are you able to produce a small test case of this bug? >> >> Bye, >> bearophile > > Small test cases don't crash. I will spend a bit of time experimenting > with my way-too-big test case to find out why it crashes when run after > being compiled with -profile, and post my results here. > > One thing I noticed was that the trace.log file doesn't demangle the > names properly either.
Here is a gdb stacktrace from a program that was compiled with -profile and -gc. The program is too big to post here, but it works just fine without the -profile. Note that the problem seems to be something to do with variant and/or concurrency. I don't like my chances, but I will dig deeper. Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0xf7521b70 (LWP 32218)] 0x080834cc in trace_epi () (gdb) bt #0 0x080834cc in trace_epi () #1 0x0806ee56 in _trace_epi_n () #2 0xf7520ee4 in ?? () #3 0x08057b4d in _D3std7variant17__T8VariantNVk24Z8VariantN59__T7handlerTS3std8typecons24__T5TupleTC3bob7NewFileZ5TupleZ7handlerFE3std7variant17__T8VariantNVk24Z8VariantN4OpIDPG24hPvZi (parm=0xf7520eac, pStore=0x0, selector=3) at /home/grahams/local/dmd2/linux/bin/../../src/phobos/ std/variant.d:248 #4 0x08061310 in _D3std7variant17__T8VariantNVk24Z8VariantN62__T10convertsToTS3std8typecons23__T5TupleTC3bob6ActionZ5TupleZ10convertsToMFZb (this=0xf7520ec8) at /home/grahams/local/dmd2/linux/bin/../../src/phobos/std/ variant.d:584 #5 0x080607ec in _D3std11concurrency10MessageBox130__T3getTDFS3std11concurrency3TidZvTDFC3bob6ActionZvTDFC3bob7NewFileZvTDFAyaZvTDFC3bob11UpdatedFileZvTDFC3bob11ScannedFileZvTDFbZvZ3getMFDFS3std11concurrency3TidZvDFC3bob6ActionZvDFC3bob7NewFileZvDFAyaZvDFC3bob11UpdatedFileZvDFC3bob11ScannedFileZvDFbZvZv9onUserMsgMFS3std11concurrency7MessageZb (this=0xf7521038, msg=...) at /home/grahams/local/dmd2/linux/bin/../../src/phobos/std/ concurrency.d:360 #6 0x08061213 in _D3std11concurrency10MessageBox130__T3getTDFS3std11concurrency3TidZvTDFC3bob6ActionZvTDFC3bob7NewFileZvTDFAyaZvTDFC3bob11UpdatedFileZvTDFC3bob11ScannedFileZvTDFbZvZ3getMFDFS3std11concurrency3TidZvDFC3bob6ActionZvDFC3bob7NewFileZvDFAyaZvDFC3bob11UpdatedFileZvDFC3bob11ScannedFileZvDFbZvZv4scanMFKS3std11concurrency36__T4ListTS3std11concurrency7MessageZ4ListZb (this=0xf7521038, list=0xf7d26dc8) at /home/grahams/local/dmd2/linux/bin/../../src/phobos/std/ concurrency.d:449 #7 0x08060555 in _D3std11concurrency10MessageBox130__T3getTDFS3std11concurrency3TidZvTDFC3bob6ActionZvTDFC3bob7NewFileZvTDFAyaZvTDFC3bob11UpdatedFileZvTDFC3bob11ScannedFileZvTDFbZvZ3getMFDFS3std11concurrency3TidZvDFC3bob6ActionZvDFC3bob7NewFileZvDFAyaZvDFC3bob11UpdatedFileZvDFC3bob11ScannedFileZvDFbZvZv (this=0xf7d26dc0, _param_6=577956023555583664, _param_5=577955439440031408, _param_4=577954855324479152, _param_3=577954408647880368, _param_2=577953807352458928, _param_1=577952742200569520, _param_0=577952226804494000) at /home/ grahams/local/dmd2/linux/bin/../../src/phobos/std/concurrency.d:463 #8 0x080603f0 in _D3std11concurrency134__T7receiveTDFS3std11concurrency3TidZvTDFC3bob6ActionZvTDFC3bob7NewFileZvTDFAyaZvTDFC3bob11UpdatedFileZvTDFC3bob11ScannedFileZvTDFbZvZ7receiveFDFS3std11concurrency3TidZvDFC3bob6ActionZvDFC3bob7NewFileZvDFAyaZvDFC3bob11UpdatedFileZvDFC3bob11ScannedFileZvDFbZvZv (_param_6=577956023555583664, _param_5=577955439440031408, _param_4=577954855324479152, _param_3=577954408647880368, _param_2=577953807352458928, _param_1=577952742200569520, _param_0=577952226804494000) at /home/grahams/local/dmd2/linux/bin/../../ src/phobos/std/concurrency.d:228 #9 0x08054c18 in _D3bob13do_schedulingFbS3std11concurrency3TidZv (done_tid=..., print_deps=false) at /home/grahams/source/squid/open/ bedrock/build-tool/util/bob.d:2127 #10 0x08067bfc in _D3std11concurrency35__T5spawnTbTS3std11concurrency3TidZ5spawnFPFbS3std11concurrency3TidZvbS3std11concurrency3TidZS3std11concurrency3Tid4execMFZv (this=0xf7d27b80) at /home/grahams/local/dmd2/linux/bin/../../src/phobos/std/ concurrency.d:154 #11 0x0806c00e in _D4core6thread6Thread3runMFZv () #12 0x0807df2a in thread_entryPoint () #13 0xf7faa96e in start_thread (arg=0xf7521b70) at pthread_create.c:300 #14 0xf7ef3b5e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130