Re: egcs-20000131 c++ inline code generation broken

On Wed, Feb 02, 2000 at 09:04:53PM -0800, Martin Buchholz wrote: I cannot reproduce this crash with gcc-20000129 c++ on ix86-linux. I will try again with top of trunk, but you may be interested in the details. I configured with CC=gcc-2000129, then edited config.status to make CC, XEMACS_CC, etc. equal to g++-2000129, reran config.status, and built. (Due to bugs in Autoconf, configure bombs out if you make CC a C++ compiler.) A lot of the code in the lib-src directory needed to be worked over before it would compile. I can send the patch if anyone cares. The makefile attempts to link temacs by hand and gets it horribly wrong, causing the built temacs to crash inside libc startup code. You're doing something like gcc -nostdlib pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o <objects> <X libraries> -ldl -lgcc /usr/lib/crtn.o First off, -nostdlib doesn't turn off automatic linking with crt1 in all versions of gcc. You need -nostartfiles too. Second, you forgot /usr/lib/gcc-lib/TARGET/VERSION/crtbegin.o and .../crtend.o, which means global constructors won't be run. (I think this is why it crashes; libc has global constructors.) Third, you forgot libc! It gets dragged in by dependencies of the other libraries, but not properly. None of this nonsense is actually necessary; the only point that I can see is to define 'data_start', and crt1.o does that for you on this platform. Once I fixed that, the build then completed successfully. I dumped xemacs from within gdb, as you did, with no errors. Script started on Fri Feb 4 15:24:46 2000 /work/build/xemacs/src $ gdb ./temacs GNU gdb 19990928 Copyright 1998 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i686-pc-linux-gnu"... (gdb) dump-temacs Loading ../lisp/loadup.el... Using load-path (../lisp/ ..) Using module-load-path (../modules/ ..) Loading very-early-lisp... Loading /work/build/xemacs/lisp/dumped-lisp.el... Loading /work/build/xemacs/lisp/backquote.elc... Loading /work/build/xemacs/lisp/bytecomp-runtime.elc... Loading /work/build/xemacs/lisp/find-paths.elc... Loading /work/build/xemacs/lisp/packages.elc... Loading /work/build/xemacs/lisp/setup-paths.elc... Loading /work/build/xemacs/lisp/dump-paths.elc... Loading /work/build/xemacs/lisp/subr.elc... Loading /work/build/xemacs/lisp/replace.elc... Loading /work/build/xemacs/lisp/version.el... Loading /work/build/xemacs/lisp/cl.elc... Loading /work/build/xemacs/lisp/cl-extra.elc... Loading /work/build/xemacs/lisp/cl-seq.elc... Loading /work/build/xemacs/lisp/widget.elc... Loading /work/build/xemacs/lisp/custom.elc... Loading /work/build/xemacs/lisp/cus-start.elc... Loading /work/build/xemacs/lisp/cmdloop.elc... Loading /work/build/xemacs/lisp/keymap.elc... Loading /work/build/xemacs/lisp/syntax.elc... Loading /work/build/xemacs/lisp/device.elc... Loading /work/build/xemacs/lisp/console.elc... Loading /work/build/xemacs/lisp/obsolete.elc... Loading /work/build/xemacs/lisp/specifier.elc... Loading /work/build/xemacs/lisp/faces.elc... Loading /work/build/xemacs/lisp/glyphs.elc... Loading /work/build/xemacs/lisp/objects.elc... Loading /work/build/xemacs/lisp/extents.elc... Loading /work/build/xemacs/lisp/events.elc... Loading /work/build/xemacs/lisp/text-props.elc... Loading /work/build/xemacs/lisp/process.elc... Loading /work/build/xemacs/lisp/multicast.elc... Loading /work/build/xemacs/lisp/frame.elc... Loading /work/build/xemacs/lisp/map-ynp.elc... Loading /work/build/xemacs/lisp/simple.elc... Loading /work/build/xemacs/lisp/keydefs.elc... Loading /work/build/xemacs/lisp/abbrev.elc... Loading /work/build/xemacs/lisp/derived.elc... Loading /work/build/xemacs/lisp/minibuf.elc... Loading /work/build/xemacs/lisp/list-mode.elc... Loading /work/build/xemacs/lisp/modeline.elc... Loading /work/build/xemacs/lisp/startup.elc... Loading /work/build/xemacs/lisp/misc.elc... Loading /work/build/xemacs/lisp/help-nomule.elc... Loading /work/build/xemacs/lisp/help.elc... Loading /work/build/xemacs/lisp/files-nomule.elc... Loading /work/build/xemacs/lisp/files.elc... Loading /work/build/xemacs/lisp/lib-complete.elc... Loading /work/build/xemacs/lisp/format.elc... Loading /work/build/xemacs/lisp/indent.elc... Loading /work/build/xemacs/lisp/isearch-mode.elc... Loading /work/build/xemacs/lisp/buffer.elc... Loading /work/build/xemacs/lisp/buff-menu.elc... Loading /work/build/xemacs/lisp/undo-stack.elc... Loading /work/build/xemacs/lisp/window.elc... Loading /work/build/xemacs/lisp/window-xemacs.elc... Loading /work/build/xemacs/lisp/paths.el... Loading /work/build/xemacs/lisp/lisp.elc... Loading /work/build/xemacs/lisp/page.elc... Loading /work/build/xemacs/lisp/register.elc... Loading /work/build/xemacs/lisp/iso8859-1.elc... Loading /work/build/xemacs/lisp/paragraphs.elc... Loading /work/build/xemacs/lisp/easymenu.elc... Loading /work/build/xemacs/lisp/lisp-mode.elc... Loading /work/build/xemacs/lisp/text-mode.elc... Loading /work/build/xemacs/lisp/fill.elc... Loading /work/build/xemacs/lisp/auto-save.elc... Loading /work/build/xemacs/lisp/movemail.elc... Loading /work/build/xemacs/lisp/float-sup.elc... Loading /work/build/xemacs/lisp/itimer.elc... Loading /work/build/xemacs/lisp/itimer-autosave.elc... Loading /work/build/xemacs/lisp/toolbar.elc... Loading /work/build/xemacs/lisp/scrollbar.elc... Loading /work/build/xemacs/lisp/menubar.elc... Loading /work/build/xemacs/lisp/dialog.elc... Loading /work/build/xemacs/lisp/gui.elc... Loading /work/build/xemacs/lisp/mode-motion.elc... Loading /work/build/xemacs/lisp/mouse.elc... Loading /work/build/xemacs/lisp/select.elc... Loading /work/build/xemacs/lisp/menubar-items.elc... Loading /work/build/xemacs/lisp/gutter-items.elc... Loading /work/build/xemacs/lisp/x-faces.elc... Loading /work/build/xemacs/lisp/x-iso8859-1.elc... Loading /work/build/xemacs/lisp/x-mouse.elc... Loading /work/build/xemacs/lisp/x-select.elc... Loading /work/build/xemacs/lisp/x-scrollbar.elc... Loading /work/build/xemacs/lisp/x-misc.elc... Loading /work/build/xemacs/lisp/x-init.elc... Loading /work/build/xemacs/lisp/toolbar-items.elc... Loading /work/build/xemacs/lisp/x-win-xfree86.elc... Loading /work/build/xemacs/lisp/x-win-sun.elc... Loading /work/build/xemacs/lisp/tty-init.elc... Loading /work/build/xemacs/lisp/fontl-hooks.elc... Loading /work/build/xemacs/lisp/auto-show.elc... Loading /work/build/xemacs/lisp/loadhist.elc... Loading /work/build/xemacs/lisp/loaddefs.elc... Loading site-load... Finding pointers to doc strings... Finding pointers to doc strings...done Dumping under the name xemacs Program exited normally. (gdb) quit make check gets some errors, but these appear to be unrelated. $ make check cd ./src && make check make[1]: Entering directory `/work/build/xemacs/src' ./xemacs -batch -l \ /work/src/xemacs-21.2/src/../tests/automated/test-harness.el -f \ batch-test-emacs /work/src/xemacs-21.2/src/../tests/automated Testing /work/src/xemacs-21.2/tests/automated/base64-tests.el... base64-tests.el: 1232 of 1232 (100%) tests successful. Testing /work/src/xemacs-21.2/tests/automated/byte-compiler-tests.el... Unexpected error (void-function defadvice) while executing interpreted code. Test suite execution aborted. Unexpected error (void-variable message) while executing byte-compiled code. Test suite execution aborted. byte-compiler-tests.el: No tests run Test suite execution failed unexpectedly. Testing /work/src/xemacs-21.2/tests/automated/database-tests.el... database-tests.el: No tests run Testing /work/src/xemacs-21.2/tests/automated/hash-table-tests.el... hash-table-tests.el: 8570 of 8570 (100%) tests successful. Testing /work/src/xemacs-21.2/tests/automated/lisp-tests.el... lisp-tests.el: 3262 of 3262 (100%) tests successful. Testing /work/src/xemacs-21.2/tests/automated/md5-tests.el... md5-tests.el: 56 of 56 (100%) tests successful. Testing /work/src/xemacs-21.2/tests/automated/mule-tests.el... mule-tests.el: 2 of 2 (100%) tests successful. Testing /work/src/xemacs-21.2/tests/automated/symbol-tests.el... symbol-tests.el: 226 of 226 (100%) tests successful. Testing /work/src/xemacs-21.2/tests/automated/syntax-tests.el... syntax-tests.el: 56 of 56 (100%) tests successful. Done I conclude: either the problem you hit was introduced after the 20000129 snapshot, or it was caused by old object files or C/C++ incompatibilities. zw