Hi, I have the problem that I get a segmentation fault on the newer versions of the cygwin1.dll when debugging and a STATUS_STACK_OVERFLOW exception when running without debugger. I did an update of my cygwin stuff on Monday, and I'm using the latest snapshot dll. I'm quite sure it has something to do with the dll, because I did clean and rebuild with newest cygwin versions. Since this wasn't working, I got my old dll (from 29.03.2011) and it worked again. I tried some other snapshot versions (up to 04.06.2011, since there are no old ones), but none of them worked.
If I can get older snapshot versions, I might be able to track it down. But then again stack problems are hard to catch. I compiled my code with -fstack-protector-all --param ssp-buffer-size=4, but this didn't help me so far (well, maybe I'm not using it right.). Stacktrace of the first segmentation fault: Thread [11] 0 (Suspended : Signal : SIGSEGV:Segmentation fault) _alloca() at ../../../libgcc/../gcc/config/i386/cygwin.asm:45 0x6116fd02 __small_vswprintf() at /netrel/src/cygwin-snapshot-20120202-1/winsup/cygwin/smallprint.cc:369 0x610dbdfe 0x0 Another segmentation fault: It can be triggered with my program after continuing when the firs tsegmentation fault. I wasn't able to step into XCP_XmlResp_Ok. I checked the address of XCP_XmlResp_Ok, it stays the same from the program start. Thread [19] 0 (Suspended : Signal : SIGSEGV:Segmentation fault) _alloca() at /gnu/gcc/releases/respins/4.5.3-3/gcc4-4.5.3-3/src/gcc-4.5.3/libgcc/../gcc/config/i386/cygwin.asm:45 0x44ca42 XCP_XmlResp_Ok() at /cygdrive/c/.../XmlConfigParsing.c:2.278 0x409310 _fu82____stack_chk_guard() at /cygdrive/c/.../XmlConfigParsing.c:517 0x4051c2 _fu80____stack_chk_guard() at /cygdrive/c/.../XmlConfigParsing.c:166 0x404632 _fu434____stack_chk_guard() at /cygdrive/c/.../TcpIpServer.c:331 0x41843e _fu427____stack_chk_guard() at /cygdrive/c/.../TcpIpServer.c:82 0x4179fb pthread::thread_init_wrapper() at 0x610fa5d2 thread_wrapper() at 0x61085482 Regards, Manuel -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
