Some time ago, I wrote... Oh, here's a backtrace: NTDLL! DbgBreakPoint address 0x77f9f9df malloc(unsigned int 0x00010000) line 673 + 40 bytes xrealloc(void * 0x00000000, unsigned int 0x00010000) line 287 + 36 bytes Lstream_read_more(lstream * 0x01e9ea00) line 528 + 82 bytes Lstream_read(lstream * 0x01e9ea00, void * 0x01ee2000, unsigned int 0x00010000) line 573 + 9 bytes decoding_reader(lstream * 0x01e9eb00, unsigned char * 0x01ee2000, unsigned int 0x00010000) line 2188 + 20 bytes Lstream_raw_read(lstream * 0x01e9eb00, unsigned char * 0x01ee2000, unsigned int 0x00010000) line 511 + 21 bytes Lstream_read_more(lstream * 0x01e9eb00) line 529 + 20 bytes Lstream_read(lstream * 0x01e9eb00, void * 0x00825834, unsigned int 0x00008000) line 573 + 9 bytes Finsert_file_contents_internal(long 0x01e9cd44, long 0x01b0c004, long 0x00000003, long 0x00001773, long 0x01b0c004, long 0x01b33c54, long 0x01c9bf84) line 2982 + 33 bytes Ffuncall(int 0x00000008, long * 0x0082d94c) line 3218 + 330 bytes execute_optimized_program(const unsigned char * 0x0082db44, int 0x00000009, long * 0x01c9e490) line 747 + 16 bytes Fbyte_code(long 0x01ca6034, long 0x01c9e480, long 0x00000013) line 2406 + 38 bytes Feval(long 0x01c90894) line 3018 + 187 bytes condition_case_1(long 0x01c7d7f0, long (long)* 0x01068d23 Feval(long), long 0x01c90894, long (long, long)* 0x010665d4 run_condition_case_handlers(long, long), long 0x01c1f094) line 1644 + 7 bytes condition_case_3(long 0x01c90894, long 0x01c1f094, long 0x01c7d7f0) line 1728 + 27 bytes execute_rare_opcode(long * 0x0082ded8, const unsigned char * 0x01c5ae1a, int 0x0000008f) line 1272 + 19 bytes execute_optimized_program(const unsigned char * 0x01c5ae10, int 0x00000005, long * 0x01c9e410) line 657 + 17 bytes funcall_compiled_function(long 0x01c9cc2c, int 0x00000004, long * 0x0082e1cc) line 519 + 53 bytes Ffuncall(int 0x00000005, long * 0x0082e1c8) line 3253 + 17 bytes execute_optimized_program(const unsigned char * 0x01c93810, int 0x0000000b, long * 0x01c93910) line 747 + 16 bytes funcall_compiled_function(long 0x01c9cc10, int 0x00000003, long * 0x0082e428) line 519 + 53 bytes Feval(long 0x01e6310c) line 3077 + 20 bytes Fprogn(long 0x01e63190) line 772 + 9 bytes funcall_lambda(long 0x01e631a8, int 0x00000001, long * 0x0082e70c) line 3540 + 9 bytes Ffuncall(int 0x00000002, long * 0x0082e708) line 3261 + 17 bytes mapcar1(unsigned int 0x00000014, long * 0x00000000, long 0x01e631a8, long 0x01ce0ac8) line 2989 + 11 bytes Fmapc_internal(long 0x01e631a8, long 0x01ce0ac8) line 3112 + 37 bytes Ffuncall(int 0x00000003, long * 0x0082e7bc) line 3218 + 93 bytes execute_optimized_program(const unsigned char * 0x01b4a610, int 0x00000006, long * 0x01b9f990) line 747 + 16 bytes funcall_compiled_function(long 0x01ba3330, int 0x00000002, long * 0x0082ea1c) line 519 + 53 bytes Feval(long 0x01e630dc) line 3077 + 20 bytes Fprogn(long 0x01e63184) line 772 + 9 bytes Flet(long 0x01e630d0) line 937 + 9 bytes Feval(long 0x01e126f4) line 2991 + 13 bytes readevalloop(long 0x01dee080, long 0x01dff054, long (long)* 0x01068d23 Feval(long), int 0x00000000) line 1448 + 7 bytes Fload_internal(long 0x01dff054, long 0x01b0c004, long 0x01b0c01c, long 0x01b0c004, long 0x01b2aa14, long 0x01b0c004) line 736 + 23 bytes Ffuncall(int 0x00000006, long * 0x0082efcc) line 3218 + 271 bytes execute_optimized_program(const unsigned char * 0x01c93810, int 0x0000000b, long * 0x01c93910) line 747 + 16 bytes funcall_compiled_function(long 0x01c9cc10, int 0x00000004, long * 0x0082f2d0) line 519 + 53 bytes Ffuncall(int 0x00000005, long * 0x0082f2cc) line 3253 + 17 bytes call4(long 0x01b2ce94, long 0x01dff054, long 0x01b0c004, long 0x01b0c01c, long 0x01b0c004) line 3919 + 11 bytes Frequire(long 0x01e98f0c, long 0x01b0c004) line 3305 + 70 bytes Feval(long 0x01e8dcd8) line 3018 + 141 bytes readevalloop(long 0x01e57f80, long 0x01c4e234, long (long)* 0x01068d23 Feval(long), int 0x00000000) line 1448 + 7 bytes Fload_internal(long 0x01c4e234, long 0x01b0c004, long 0x01b0c004, long 0x01b0c004, long 0x01b2aa14, long 0x01b0c004) line 736 + 23 bytes Ffuncall(int 0x00000006, long * 0x0082f6ac) line 3218 + 271 bytes execute_optimized_program(const unsigned char * 0x01c93810, int 0x0000000b, long * 0x01c93910) line 747 + 16 bytes funcall_compiled_function(long 0x01c9cc10, int 0x00000004, long * 0x0082f9b0) line 519 + 53 bytes Ffuncall(int 0x00000005, long * 0x0082f9ac) line 3253 + 17 bytes call4(long 0x01b2ce94, long 0x01c4e234, long 0x01b0c004, long 0x01b0c004, long 0x01b0c004) line 3919 + 11 bytes do_autoload(long 0x01d162f8, long 0x01cb8cfc) line 2832 + 79 bytes Feval(long 0x01cc7b04) line 3093 + 13 bytes Ffuncall(int 0x00000002, long * 0x0082fc1c) line 3218 + 66 bytes call1(long 0x01b229cc, long 0x01cc7b04) line 3867 + 11 bytes execute_command_event(command_builder * 0x01d7cc80, long 0x01d869e8) line 3832 + 37 bytes Fdispatch_event(long 0x01d869e8) line 4203 + 13 bytes Fcommand_loop_1() line 575 + 9 bytes command_loop_1(long 0x01b0c004) line 491 condition_case_1(long 0x01b0c064, long (long)* 0x01049570 command_loop_1(long), long 0x01b0c004, long (long, long)* 0x01048f90 cmd_error(long, long), long 0x01b0c004) line 1644 + 7 bytes command_loop_3() line 252 + 35 bytes command_loop_2(long 0x01b0c004) line 265 internal_catch(long 0x01b1f004, long (long)* 0x010490e0 command_loop_2(long), long 0x01b0c004, int * volatile 0x00000000) line 1310 + 7 bytes initial_command_loop(long 0x01b0c004) line 301 + 25 bytes STACK_TRACE_EYE_CATCHER(int 0x00000001, char * * 0x01b4a500, char * * 0x01cb5200, int 0x00000000) line 1875 main(int 0x00000001, char * * 0x01b4a500, char * * 0x01cb5200) line 2294 XEMACS! mainCRTStartup + 180 bytes _start() line 183 KERNEL32! SetUnhandledExceptionFilter + 92 bytes

ugh, i have been trying to debug this problem for hours! i didn't realize you had to break at _abort(). andy, please be careful with things like this. here's a backtrace. it always crashes while processing xemacs-beta.xpm in msw-glyphs.el. abort address 0x011663f0 malloc(unsigned int 65536) line 671 + 25 bytes xrealloc(void * 0x00000000, unsigned int 65536) line 287 + 36 bytes Lstream_read_more(lstream * 0x01b3e200) line 528 + 82 bytes Lstream_read(lstream * 0x01b3e200, void * 0x01eed000, unsigned int 65536) line 573 + 9 bytes decoding_reader(lstream * 0x01b05380, unsigned char * 0x01eed000, unsigned int 65536) line 2188 + 20 bytes Lstream_raw_read(lstream * 0x01b05380, unsigned char * 0x01eed000, unsigned int 65536) line 511 + 21 bytes Lstream_read_more(lstream * 0x01b05380) line 529 + 20 bytes Lstream_read(lstream * 0x01b05380, void * 0x00823e20, unsigned int 32768) line 573 + 9 bytes Finsert_file_contents_internal(long 30772868, long 28360708, long 3, long 6003, long 28360708, long 28523724, long 31768308) line 2982 + 33 bytes Feval(long 31533804) line 3200 + 471 bytes Fsetq(long 31533792) line 1079 + 9 bytes Feval(long 31533780) line 3173 + 13 bytes Fprogn(long 31533768) line 866 + 9 bytes Fif(long 31533492) line 784 + 9 bytes Feval(long 31533456) line 3173 + 13 bytes Fprogn(long 31533180) line 866 + 9 bytes Feval(long 31533096) line 3173 + 13 bytes condition_case_1(long 31534440, long (long)* 0x0106a160 Feval(long), long 31533096, long (long, long)* 0x01067852 run_condition_case_handlers(long, long), long 30588852) line 1750 + 7 bytes condition_case_3(long 31533096, long 30588852, long 31534440) line 1834 + 27 bytes Fcondition_case(long 31533084) line 1877 + 17 bytes Feval(long 31533072) line 3173 + 13 bytes Fprogn(long 31534452) line 866 + 9 bytes Flet(long 31533060) line 1031 + 9 bytes Feval(long 31537100) line 3173 + 13 bytes Fprogn(long 31537040) line 866 + 9 bytes funcall_lambda(long 31617064, int 4, long * 0x0082ca30) line 3728 + 9 bytes Feval(long 31731800) line 3306 + 20 bytes Fprogn(long 31731860) line 866 + 9 bytes Flet(long 31731788) line 1031 + 9 bytes Feval(long 31731716) line 3173 + 13 bytes Fprogn(long 31772632) line 866 + 9 bytes Fsave_excursion(long 31772632) line 403 + 9 bytes Feval(long 31772572) line 3173 + 13 bytes For(long 31772560) line 742 + 9 bytes Feval(long 31772488) line 3173 + 13 bytes Fprogn(long 31732064) line 866 + 9 bytes Flet(long 31772476) line 1031 + 9 bytes Feval(long 31772332) line 3173 + 13 bytes Feval(long 31772272) line 3188 + 12 bytes Fprogn(long 31732088) line 866 + 9 bytes Fif(long 31772092) line 784 + 9 bytes Feval(long 31771756) line 3173 + 13 bytes Fprogn(long 31732100) line 866 + 9 bytes Fif(long 31771624) line 784 + 9 bytes Feval(long 31771612) line 3173 + 13 bytes Fprogn(long 31732112) line 866 + 9 bytes FletX(long 31771600) line 965 + 9 bytes Feval(long 31771396) line 3173 + 13 bytes Fprogn(long 31771384) line 866 + 9 bytes funcall_lambda(long 31536512, int 1, long * 0x0082da54) line 3728 + 9 bytes Feval(long 28969900) line 3306 + 20 bytes Fprog1(long 28969924) line 888 + 21 bytes Feval(long 28969888) line 3173 + 13 bytes Fif(long 28969876) line 782 + 9 bytes Feval(long 28969864) line 3173 + 13 bytes Fprogn(long 28970056) line 866 + 9 bytes Flet(long 28969852) line 1031 + 9 bytes Feval(long 28969600) line 3173 + 13 bytes Fprogn(long 28970068) line 866 + 9 bytes funcall_lambda(long 28965588, int 1, long * 0x0082e184) line 3728 + 9 bytes Feval(long 28970320) line 3306 + 20 bytes Fif(long 31979776) line 781 + 9 bytes Feval(long 31979824) line 3173 + 13 bytes Feval(long 28970308) line 3280 + 34 bytes Fprogn(long 28970428) line 866 + 9 bytes Fwhile(long 28970296) line 1048 + 9 bytes Feval(long 28970224) line 3173 + 13 bytes Fprogn(long 28970512) line 866 + 9 bytes Flet(long 28970212) line 1031 + 9 bytes Feval(long 28970152) line 3173 + 13 bytes Fprogn(long 28972452) line 866 + 9 bytes funcall_lambda(long 28971924, int 0, long * 0x0082eae4) line 3728 + 9 bytes Ffuncall(int 1, long * 0x0082eae0) line 3443 + 17 bytes Fcall_with_condition_handler(int 2, long * 0x0082eadc) line 1913 + 19 bytes Feval(long 28971876) line 3227 + 20 bytes Fprogn(long 28970944) line 866 + 9 bytes Flet(long 28971864) line 1031 + 9 bytes Feval(long 28971816) line 3173 + 13 bytes readevalloop(long 28566400, long 29064980, long (long)* 0x0106a160 Feval(long), int 0) line 1448 + 7 bytes Fload_internal(long 29064980, long 28360708, long 28360708, long 28360708, long 28360708, long 28360708) line 736 + 23 bytes Feval(long 28971336) line 3200 + 385 bytes Fprogn(long 28971360) line 866 + 9 bytes Flet(long 28971324) line 1031 + 9 bytes Feval(long 28971240) line 3173 + 13 bytes readevalloop(long 28566272, long 29064660, long (long)* 0x0106a160 Feval(long), int 0) line 1448 + 7 bytes Fload_internal(long 29064660, long 28360708, long 28360708, long 28360708, long 28360708, long 28360708) line 736 + 23 bytes Feval(long 28974992) line 3200 + 385 bytes Fprogn(long 28974980) line 866 + 9 bytes Feval(long 28974752) line 3173 + 13 bytes Fif(long 28974740) line 782 + 9 bytes Feval(long 28974728) line 3173 + 13 bytes readevalloop(long 28566528, long 28624100, long (long)* 0x0106a160 Feval(long), int 0) line 1448 + 7 bytes Fload_internal(long 28624100, long 28360708, long 28360708, long 28360708, long 28360708, long 28360708) line 736 + 23 bytes Feval(long 28592076) line 3200 + 385 bytes condition_case_1(long 28360804, long (long)* 0x0106a160 Feval(long), long 28592076, long (long, long)* 0x01049ce0 cmd_error(long, long), long 28360708) line 1750 + 7 bytes top_level_1(long 28360708) line 202 + 35 bytes internal_catch(long 28438532, long (long)* 0x01049c80 top_level_1(long), long 28360708, int * 0x00000000, long * 0x00000000) line 1407 + 7 bytes initial_command_loop(long 28624100) line 281 + 27 bytes STACK_TRACE_EYE_CATCHER(int 4, char * * 0x01b05000, char * * 0x01b05f80, int 0) line 1873 + 9 bytes main(int 4, char * * 0x01b05000, char * * 0x01b05f80) line 2230 + 19 bytes mainCRTStartup + 211 bytes _start() line 183 KERNEL32! 77e9bc52() Kirill 'Big K' Katsnelson wrote: -- Ben In order to save my hands, I am cutting back on my mail. I also write as succinctly as possible -- please don't be offended. If you send me mail, you _will_ get a response, but please be patient, especially for XEmacs-related mail. If you need an immediate response and it is not apparent in your message, please say so. Thanks for your understanding. See also http://www.666.com/ben/typing.html.

Andy Piper wrote: yup, esp. since the lstream code has been stable for quite a long time and no one's touched it recently, and it's crashing in glyphs code, which is most likely trashing some memory somewhere. if you trace through the gmalloc code and you find one location that's definitely gotten trashed, try setting a watch point (i.e. break on write) on that particular location. if you're lucky, this will pinpoint exactly who's trashing that location. ben -- Ben In order to save my hands, I am cutting back on my mail. I also write as succinctly as possible -- please don't be offended. If you send me mail, you _will_ get a response, but please be patient, especially for XEmacs-related mail. If you need an immediate response and it is not apparent in your message, please say so. Thanks for your understanding. See also http://www.666.com/ben/typing.html.

Some time ago, Ben Wing wrote... Andy, I can build XEmacs with MSVC using debug memory allocator, kind of purify thing. If you can supply the exact test sequence which you suspect trashes memory, then I can run it with that build, to see where exactly does it occur. I guess I should make the debug allocator the default when USE_ SYSTEM_MALLOC and DEBUG_XEMACS are both defined. Big K

At 11:28 PM 4/7/00 -0700, Ben Wing wrote: I've done this. andy -------------------------------------------------------------- Dr Andy Piper Principal Consultant, BEA Systems Ltd

At 02:56 PM 4/7/00 -0700, Kirill 'Big K' Katsnelson wrote: Thanks, I've found the problem. andy -------------------------------------------------------------- Dr Andy Piper Principal Consultant, BEA Systems Ltd