[ https://issues.apache.org/jira/browse/STDCXX-625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12540484 ]
Travis Vitek commented on STDCXX-625: ------------------------------------- Yes, but setjmp/longjmp don't solve the missed signal problem that we are talking about. Apparently Martin knows how to handle this, so I'm hoping he'll chime in. > 0.process test fails with SEGV due to stack overflow > ---------------------------------------------------- > > Key: STDCXX-625 > URL: https://issues.apache.org/jira/browse/STDCXX-625 > Project: C++ Standard Library > Issue Type: Bug > Components: Tests > Affects Versions: 4.2 > Environment: HP-UX or AIX platforms > Reporter: Travis Vitek > Assignee: Travis Vitek > Priority: Minor > Fix For: 4.2.1 > > Attachments: stdcxx-625.patch, test.cpp > > > It appears that when we re-register for the signal from within the user > signal handler the user signal handler is immediately invoked again. This > recursion causes a stack overflow and a crash. Here is the stack on AIX.... > sig_handler(int)( = 20), line 528 in "process.cpp" > sigaction(??, ??, ??) at 0xd01fa358 > signal(??, ??) at 0xd02759a8 > sig_handler(int)( = 20), line 528 in "process.cpp" > sigaction(??, ??, ??) at 0xd01fa358 > signal(??, ??) at 0xd02759a8 > sig_handler(int)( = 20), line 528 in "process.cpp" > nsleep(??, ??) at 0xd01fa1d4 > sleep(??) at 0xd02051d4 > unnamed block $b656, line 553 in "process.cpp" > rw_waitpid(long,int*,int)(pid = 782442, result = 0x2ff226a0, timeout = 5), > line 553 in "process.cpp" > join_test(long,bool)(pid = 782442, should_hang = false), line 51 in > "0.process.cpp" > test_process_create1()(), line 109 in "0.process.cpp" > run_test(int,char**)(argc = 1, argv = 0x2ff22a60), line 276 in "0.process.cpp" > rw_vtest(int,char**,const char*,const char*,const > char*,int(*)(int,char**),const char*,char*)(argc = 1, argv = 0x2ff22a60, > file_name = "/amd/devco/vitek/stdcxx-trunk/tests/self/0.process.cpp", clause > = "0.process", comment = "", fun = 0x2000b85c, optstr = "|-child#0 > |-timeout#", va = " "), line 1030 in "driver.cpp" > rw_test(int,char**,const char*,const char*,const > char*,int(*)(int,char**),const char*,...)(argc = 1, argv = 0x2ff22a60, fname > = "/amd/devco/vitek/stdcxx-trunk/tests/self/0.process.cpp", clause = > "0.process", comment = "", testfun = 0x2000b85c, optstr = "|-child#0 > |-timeout#", ... = 0x20009608), line 1128 in "driver.cpp" > main(argc = 1, argv = 0x2ff22a60), line 299 in "0.process.cpp" > Here is the stack on HP-UX > #0 sig_handler (No.Identifier=18) at > /amd/devco/vitek/stdcxx-trunk/tests/src/process.cpp:529 > #1 <signal handler called> > #2 0x7b0086c0 in _sigvector+0x10 () from /usr/lib/libc.2 > #3 0x7b00f114 in signalvector+0xac () from /usr/lib/libc.2 > #4 0x7b00f020 in signal+0xa0 () from /usr/lib/libc.2 > #5 0x187fc in sig_handler (No.Identifier=18) at > /amd/devco/vitek/stdcxx-trunk/tests/src/process.cpp:529 > #6 <signal handler called> > #7 0x7b0086c0 in _sigvector+0x10 () from /usr/lib/libc.2 > #8 0x7b00f114 in signalvector+0xac () from /usr/lib/libc.2 > #9 0x7b00f020 in signal+0xa0 () from /usr/lib/libc.2 > #10 0x187fc in sig_handler (No.Identifier=18) at > /amd/devco/vitek/stdcxx-trunk/tests/src/process.cpp:529 > #11 <signal handler called> > #12 0x7b0086c0 in _sigvector+0x10 () from /usr/lib/libc.2 > #13 0x7b00f114 in signalvector+0xac () from /usr/lib/libc.2 > #14 0x7b00f020 in signal+0xa0 () from /usr/lib/libc.2 > #15 0x187fc in sig_handler (No.Identifier=18) at > /amd/devco/vitek/stdcxx-trunk/tests/src/process.cpp:529 > #16 <signal handler called> > #17 0x7b0086c0 in _sigvector+0x10 () from /usr/lib/libc.2 > #18 0x7b00f114 in signalvector+0xac () from /usr/lib/libc.2 > #19 0x7b00f020 in signal+0xa0 () from /usr/lib/libc.2 > #20 0x187fc in sig_handler (No.Identifier=18) at > /amd/devco/vitek/stdcxx-trunk/tests/src/process.cpp:529 > #21 <signal handler called> > #22 0x7b00a160 in __sigtimedwait_sys+0x10 () from /usr/lib/libc.2 > #23 0x7b013c84 in sigtimedwait+0x6c () from /usr/lib/libc.2 > #24 0x7afa2a50 in sleep+0xe8 () from /usr/lib/libc.2 > #25 0x188f0 in rw_waitpid (pid=13825, result=0x7f7f0db0, timeout=5) > at /amd/devco/vitek/stdcxx-trunk/tests/src/process.cpp:555 > #26 0x15250 in join_test (pid=13825, should_hang=false) at > /amd/devco/vitek/stdcxx-trunk/tests/self/0.process.cpp:51 > #27 0x15424 in test_process_create1 () at > /amd/devco/vitek/stdcxx-trunk/tests/self/0.process.cpp:109 > #28 0x159b4 in run_test (argc=1, argv=0x7f7f08d4) at > /amd/devco/vitek/stdcxx-trunk/tests/self/0.process.cpp:276 > #29 0x16d1c in rw_vtest (argc=1, argv=0x7f7f08d4, > file_name=0x8e090 > "/amd/devco/vitek/stdcxx-trunk/tests/self/0.process.cpp", clause=0x8e528 > "0.process", > comment=0x8e08f "", fun=0x4001ed52 <run_test(int, char **)>, > optstr=0x8e534 "|-child#0 |-timeout#", va=0x7f7f0a34) > at /amd/devco/vitek/stdcxx-trunk/tests/src/driver.cpp:1030 > #30 0x171ec in rw_test (argc=1, argv=0x7f7f08d4, fname=0x8e090 > "/amd/devco/vitek/stdcxx-trunk/tests/self/0.process.cpp", > clause=0x8e528 "0.process", comment=0x8e08f "", testfun=0x4001ed52 > <run_test(int, char **)>, > optstr=0x8e534 "|-child#0 |-timeout#") at > /amd/devco/vitek/stdcxx-trunk/tests/src/driver.cpp:1127 > #31 0x15ad4 in main (argc=1, argv=0x7f7f08d4) at > /amd/devco/vitek/stdcxx-trunk/tests/self/0.process.cpp:299 -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.