From: denaro AT elet DOT polimi DOT it (Gio) Subject: Re: STATUS ACCESS VIOLATION 21 Feb 1998 06:46:17 -0800 Message-ID: References: Reply-To: Gio Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII To: gnu-win32 AT cygnus DOT com On Tue, 17 Feb 1998, Giovanni Denaro wrote: > Hi, > > I am actually porting under a Windows 95 platform a tool previously > developed for unix platforms, using b18 gnuwin32 g++. > > I have solved all my compile time problems, > but now I get the following run-time problem: > > during execution my process crashes with the following output: > > ----------------------------------------- > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) In > cygwin_exc ept_handler exc C0000005 at 1004667C sp 25CFAEC > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) > Exception trapped! > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) > exception C0000005 at 1004667C > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) > exception: ax 0 bx 0 cx 4705E44 dx 65697266 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) > exception: si 1004C2DC di 1 bp 25CFAF4 sp 25CFAEC > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) > exception is: STATUS_ACCESS_VIOLATION > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) Stack > trace: > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 0: sp = 0x25CF904, pc = 0x10007BB2 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 1: sp = 0x25CF920, pc = 0xBFF76780 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 2: sp = 0x25CF944, pc = 0xBFF858F3 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 3: sp = 0x25CF9DC, pc = 0xFFECBAD7 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 4: sp = 0x25CFAF4, pc = 0x1000F26D > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 5: sp = 0x25CFB04, pc = 0x466DEA > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 6: sp = 0x25CFB18, pc = 0x4672FB > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 7: sp = 0x25CFB24, pc = 0x411A20 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 8: sp = 0x25CFB40, pc = 0x428F52 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 9: sp = 0x25CFBD8, pc = 0x42043A > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 10: sp= 0x25CFC68, pc = 0x41BE85 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 11: sp= 0x25D00A8, pc = 0x41DF36 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 12: sp= 0x25D10D0, pc = 0x444098 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 13: sp= 0x25D10F8, pc = 0x442610 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 14: sp= 0x25D110C, pc = 0x44B39B > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) frame > 15: sp= 0x25D1154, pc = 0x4036E4 > (C:\WINDOWS\PROFILES\DENARO\DESKTOP\PORTING2\EDITOR\MTD+.EXE 1023) End of > stacktrace (more stack frames may be present) > > ------------------------------------- > > I have debugged (using gdb) my program and I find that the crash happends > executing a "new" statement for allocation of a single character... > > is it possible??? > > To verify this i have written a simple program that cyclically allocates > characters it crashes too.... > > I read mails in the mail-archives and find that this error has been > hilighted from other people in the past (in different and various > circumstances) but i have not found a working solution for it. > > I have already installed the Sergey's coolview and placed the new > cygwin.dll in the correct places (gnuwin32\b18\H-i386-cygwin32\bin and > gnuwin32\b18\H-i386-cygwin32\i386-cygwin32\lib). > I have update the libcygwin.a and bash.exe too. > > I worked for three months without any good result. > > May somebody help me?? > > Thank you in advance... > > Giovanni > > I am continuing to find a solution for my problem. this is the output of a simple gdb session for the program before descripted: ------------------------------------------ (gdb) Breakpoint 1 at 0x4057e3 Starting program : C:/WINDOWS/Profiles/denaro/Desktop/porting2/editor/Mtd+.exe [tcsetpgrp failed in terminal_inferior: error 0] 7c6c0000:/WINDOWS/SYSTEM/WSOCK32.DLL bfec0000:/WINDOWS/SYSTEM/ADVAPI32.DLL bff30000:/WINDOWS/SYSTEM/GDI32.DLL bff60000:/WINDOWS/SYSTEM/USER32.DLL bff70000:/WINDOWS/SYSTEM/KERNEL32.DLL 10000000:/LANG/GNUWIN32/B18/H-I386-CYGWIN32/BIN/CYGWIN.DLL bfb60000:/WINDOWS/SYSTEM/SHLWAPI.DLL 70200000:/WINDOWS/SYSTEM/WININET.DLL 0x4057e3 in main () Continuing. [tcsetpgrp failed in terminal_inferior: error 0] Program received signal SIGSEV, Segmentation fault. 0x1004667c in _malloc_r () (gdb)bt #0 0x1004667c in _malloc_r () #1 0x1000f26d in export_malloc () #2 0x466dea in __builtin_new (sz=1) #3 0x4672fb in __builtin_vec_new (sz=1) #4 0x411a20 in KString::Kstring () #5 0x428f52 in formatEnablings () #6 0x42043a in get Enablings () #7 0x41be85 in HTPLNKernel::apply_message () #8 0x41df36 in HTPLNKernel::receiveMessage () #9 0x444098 in Interface::sendMessage () #10 0x442610 in Interface::Step () #11 0x44b39b in AUMExecutor::Step () #12 0x4036e4 in evaluateMessage () #13 0x405711 in sendmessage () #14 0x405d0e in main () #15 0x100063ba in dll_crt0_1 () #16 0x100063cb in dll_crt0 () #17 0x46840d in cygwin_crt0 () (gdb) ------------------------------------------ this seems to confirm that program crashes during a malloc! May anybody help me??? by Gio - For help on using this list (especially unsubscribing), send a message to "gnu-win32-request AT cygnus DOT com" with one line of text: "help".