Hi
The following command crashes vim-7.3a (2249:4620acaf4814):
$ vim -u NONE --noplugin -c ':ownsyntax foo'
==2575== Invalid read of size 1
==2575== at 0x80FB394: vim_strsave (misc2.c:1234)
==2575== by 0x8084FA1: set_internal_string_var (eval.c:994)
==2575== by 0x81710CA: ex_ownsyntax (syntax.c:6201)
==2575== by 0x80A5A70: do_one_cmd (ex_docmd.c:2640)
==2575== by 0x80A2810: do_cmdline (ex_docmd.c:1109)
==2575== by 0x80A5E88: do_cmdline_cmd (ex_docmd.c:715)
==2575== by 0x80D9D16: main (main.c:2755)
==2575== Address 0x0 is not stack'd, malloc'd or (recently) free'd
Attached patch fixes it but I'm not familiar enough with the new
:ownsyntax command to test it properly.
-- Dominique
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diff -r 4620acaf4814 src/syntax.c
--- a/src/syntax.c Sun Jun 06 17:41:24 2010 +0200
+++ b/src/syntax.c Sun Jun 06 22:26:23 2010 +0200
@@ -6198,7 +6198,8 @@
/* move value of b:current_syntax to w:current_syntax */
new_value = get_var_value((char_u *)"b:current_syntax");
- set_internal_string_var((char_u *)"w:current_syntax", new_value);
+ if (new_value != NULL)
+ set_internal_string_var((char_u *)"w:current_syntax", new_value);
/* restore value of b:current_syntax */
if (old_value != NULL)
