* Segfault in etags with default "TAGS" file
@ 2008-08-23 20:12 Bob Rogers
0 siblings, 0 replies; only message in thread
From: Bob Rogers @ 2008-08-23 20:12 UTC (permalink / raw)
To: emacs-devel
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Doing "make TAGS" in current trunk on my GNU/Linux system (openSUSE
10.2 with Linux 2.6.18.2, gcc 4.1.3, glibc 2.5, running on an AMD Athlon
XP 2500+) fails with the following segfault:
cd src; make tags
make[1]: Entering directory `/usr/src/emacs/src'
../lib-src/etags --include=TAGS-LISP --include=../lwlib//TAGS --regex='/[ ]*DEFVAR_[A-Z_ (]+"\([^"]+\)"/' /usr/src/emacs/src/[xyzXYZ]*.[hc] /usr/src/emacs/src/[a-wA-W]*.[hc]
make[1]: *** [TAGS] Segmentation fault
make[1]: Leaving directory `/usr/src/emacs/src'
make: *** [TAGS] Error 2
rogers@rgr>
If I revert the hunk to revision 3.89 of lib-src/etags.c that affects
line 1267, it works again. On the theory that my system doesn't permit
writing constant strings, I produced the attached patch, which fixes it
for me (and seems a tad cleaner in any case).
-- Bob Rogers
http://rgrjr.dyndns.org/
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Index: lib-src/etags.c
===================================================================
RCS file: /sources/emacs/emacs/lib-src/etags.c,v
retrieving revision 3.89
diff -c -r3.89 etags.c
*** lib-src/etags.c 16 Aug 2008 23:57:41 -0000 3.89
--- lib-src/etags.c 23 Aug 2008 20:03:06 -0000
***************
*** 1250,1257 ****
/* NOTREACHED */
}
- if (tagfile == NULL)
- tagfile = CTAGS ? "tags" : "TAGS";
cwd = etags_getcwd (); /* the current working directory */
if (cwd[strlen (cwd) - 1] != '/')
{
--- 1250,1255 ----
***************
*** 1260,1267 ****
free (oldcwd);
}
/* Relative file names are made relative to the current directory. */
! if (streq (tagfile, "-")
! || strneq (tagfile, "/dev/", 5))
tagfiledir = cwd;
else
{
--- 1258,1267 ----
free (oldcwd);
}
/* Relative file names are made relative to the current directory. */
! if (tagfile == NULL)
! tagfile = CTAGS ? "tags" : "TAGS";
! else if (streq (tagfile, "-")
! || strneq (tagfile, "/dev/", 5))
tagfiledir = cwd;
else
{
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2008-08-23 20:12 Segfault in etags with default "TAGS" file Bob Rogers
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