All I know is that this happened by the following steps: 1. git clone from git://repo.or.cz/emacs.git commit e3e392d 2. Apply the following patch, (a compilation in debug mode workaround that I reported in a different bug report): diff --git a/lib-src/etags.c b/lib-src/etags.c index c88473a..8e8fd8b 100644 --- a/lib-src/etags.c +++ b/lib-src/etags.c @@ -229,7 +229,7 @@ If you want regular expression support, you should delete this notice and * SYNOPSIS: Type *xnew (int n, Type); * void xrnew (OldPointer, int n, Type); */ -#if DEBUG +#if 0 # include "chkmalloc.h" # define xnew(n,Type) ((Type *) trace_malloc (__FILE__, __LINE__, \ (n) * sizeof (Type))) 3. configure and make by the following steps: ./autogen.sh ./configure --prefix=/usr/local/public-dev/ CPPFLAGS=-DDEBUG CFLAGS="-g -O0" which output: Configured for `i686-pc-linux-gnu'. Where should the build process find the source code? /space/pub-repos/emacs.git What operating system and machine description files should Emacs use? `s/gnu-linux.h' What compiler should emacs be built with? gcc -std=gnu99 -g -O0 Should Emacs use the GNU version of malloc? yes (Using Doug Lea's new malloc from the GNU C Library.) Should Emacs use a relocating allocator for buffers? no Should Emacs use mmap(2) for buffer allocation? no What window system should Emacs use? x11 What toolkit should Emacs use? GTK Where do we find X Windows header files? Standard dirs Where do we find X Windows libraries? Standard dirs Does Emacs use -lXaw3d? no Does Emacs use -lXpm? yes Does Emacs use -ljpeg? yes Does Emacs use -ltiff? yes Does Emacs use a gif library? yes -lgif Does Emacs use -lpng? yes Does Emacs use -lrsvg-2? yes Does Emacs use imagemagick? yes Does Emacs use -lgpm? yes Does Emacs use -ldbus? yes Does Emacs use -lgconf? yes Does Emacs use GSettings? yes Does Emacs use -lselinux? yes Does Emacs use -lgnutls? yes Does Emacs use -lxml2? yes Does Emacs use -lfreetype? yes Does Emacs use -lm17n-flt? yes Does Emacs use -lotf? yes Does Emacs use -lxft? yes Does Emacs use toolkit scroll bars? yes make : Loading vc/ediff-hook... Loading tooltip... Finding pointers to doc strings... /bin/sh: line 8: 5927 Segmentation fault (core dumped) LC_ALL=C `/bin/pwd`/temacs -batch -l loadup dump make[1]: *** [emacs] Error 1 make[1]: Leaving directory `/space/pub-repos/emacs.git/src' make: *** [src] Error 2 Here is a stacktrace of the crash: #0 0x08200062 in hash_string (ptr=0xbfffe8db "(defalias 'save-selected-window '(macro . #[(&rest body)\037Fwindow-right\nReturn WINDOW's right sibling.\nReturn nil if WINDOW is the root window of its frame. WINDOW can\nbe any window.\037Fwindow-left\nRetu"..., len=-1) at fns.c:4116 #1 0x0821b647 in oblookup (obarray=139216261, ptr=0xbfffe8db "(defalias 'save-selected-window '(macro . #[(&rest body)\037Fwindow-right\nReturn WINDOW's right sibling.\nReturn nil if WINDOW is the root window of its frame. WINDOW can\nbe any window.\037Fwindow-left\nRetu"..., size=0, size_byte=-1) at lread.c:3906 #2 0x081e1b9e in Fsnarf_documentation (filename=139966033) at doc.c:658 #3 0x081f2779 in eval_sub (form=142566062) at eval.c:2283 #4 0x081ef753 in Fprogn (args=142562518) at eval.c:364 #5 0x081f08f9 in Flet (args=142574270) at eval.c:1053 #6 0x081f252c in eval_sub (form=142574310) at eval.c:2231 #7 0x081ef692 in Fif (args=142574342) at eval.c:314 #8 0x081f252c in eval_sub (form=142576646) at eval.c:2231 #9 0x08217a32 in readevalloop (readcharfun=139290210, stream=0x84edfb0, sourcename=139299913, printflag=0, unibyte=139222370, readfun=139222370, start=139222370, end=139222370) at lread.c:1837 #10 0x08216a15 in Fload (file=139299785, noerror=139222370, nomessage=139222370, nosuffix=139222370, must_suffix=139222370) at lread.c:1315 #11 0x081f284d in eval_sub (form=139201958) at eval.c:2297 #12 0x081f227d in Feval (form=139201958, lexical=139222370) at eval.c:2137 #13 0x0816dd7c in top_level_2 () at keyboard.c:1169 #14 0x081f1122 in internal_condition_case (bfun=0x816dd5f , handlers=139253426, hfun=0x816d9b9 ) at eval.c:1448 #15 0x0816ddb0 in top_level_1 (ignore=139222370) at keyboard.c:1177 #16 0x081f0bf4 in internal_catch (tag=139251378, func=0x816dd7e , arg=139222370) at eval.c:1205 #17 0x0816dce6 in command_loop () at keyboard.c:1132 #18 0x0816d5f2 in recursive_edit_1 () at keyboard.c:759 #19 0x0816d743 in Frecursive_edit () at keyboard.c:823 #20 0x0816bbc9 in main (argc=5, argv=0xbffff8e4) at emacs.c:1711 Lisp Backtrace: "Snarf-documentation" (0xbfffebb4) "let" (0xbfffedcc) "if" (0xbfffeeec) "load" (0xbffff164) Regards, Dov On Sun, Apr 29, 2012 at 21:13, Andreas Schwab wrote: > Dov Grobgeld writes: > > > building emacs crashes in src/doc.c::oblookup() with len=-1. > > That cannot happen unless make-docfile is broken. > > Andreas. > > -- > Andreas Schwab, schwab@linux-m68k.org > GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 > "And now for something completely different." >