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Missed save_parser_state() function call in pcomplete.c


From: werner
Subject: Missed save_parser_state() function call in pcomplete.c
Date: Wed, 4 Mar 2009 13:07:10 +0100

Configuration Information [Automatically generated, do not change]:
Machine: i586
OS: linux-gnu
Compiler: gcc -I/usr/src/packages/BUILD/bash-4.0 
-L/usr/src/packages/BUILD/bash-4.0/../readline-6.0
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i586' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i586-suse-linux-gnu' 
-DCONF_VENDOR='suse' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL 
-DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib   -O2 -march=i586 -mtune=i686 
-fmessage-length=0 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables 
-fasynchronous-unwind-tables -g -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 
-D_GNU_SOURCE -DRECYCLES_PIDS -Wall -g -std=gnu89 -Wextra 
-Wno-unprototyped-calls -Wno-switch-enum -Wno-unused-variable 
-Wno-unused-parameter -ftree-loop-linear -pipe -fprofile-use
uname output: Linux boole 2.6.27.7-9-pae #1 SMP 2008-12-04 18:10:04 +0100 i686 
i686 i386 GNU/Linux
Machine Type: i586-suse-linux-gnu

Bash Version: 4.0
Patch Level: 0
Release Status: release

Description:
        It seems that my last patch for pcomplete.c is not fully applied.
        The line
            save_parser_state (pps);
        is missed and leads to a memory corruption at the point where
        restore_parser_state (pps) is called.

Repeat-By:
        Simply use tab completion with a shell function for
        tab completion fro the cd command.

Fix:
--- pcomplete.c
+++ pcomplete.c 2009-03-04 11:58:05.296254166 +0000
@@ -1032,6 +1032,7 @@ gen_shell_function_matches (cs, text, li
   cmdlist = build_arg_list (funcname, text, lwords, cw);
 
   pps = &ps;
+  save_parser_state (pps);
   begin_unwind_frame ("gen-shell-function-matches");
   add_unwind_protect (restore_parser_state, (char *)pps);
   add_unwind_protect (dispose_words, (char *)cmdlist);




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