Possible bug on parse.y (alias_t not defined)

[Anderson Lizardo]

Configuration Information [Automatically generated, do not change]:
Machine: i686
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i686' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i686-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DSHELL -DHAVE_CONFIG_H  -I.  -I. -I./include -I./lib  -g -O2
uname output: Linux anderson 2.4.25 #1 Thu Feb 26 18:54:27 AMT 2004 i686 
GenuineIntel unknown GNU/Linux
Machine Type: i686-pc-linux-gnu

Bash Version: 2.05b
Patch Level: 0
Release Status: release

Description:
        parse.y has this code snippet at line 155:

    #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
    static void push_string __P((char *, int, alias_t *));
    static void pop_string __P((void));
    static void free_string_list __P((void));
    #endif

    A package compiled with dparen-arithmetic but not with alias will fail to
    build due to "alias_t" struct not being defined. Earlier on line 1405,
    this struct is defined this way:

    #if !defined (ALIAS)
    typedef void *alias_t;
    #endif

    So a simple fix is to move this conditional to somewhere before it being
    first used (that is, before line 155).

Repeat-By:

    Compile bash with these commands:

     ./configure --disable-alias && make

Fix:

--- bash-2.05b.orig/parse.y     2002-05-21 15:57:30.000000000 +0000
+++ bash-2.05b/parse.y  2004-02-29 03:01:24.000000000 +0000
@@ -152,6 +152,9 @@
 static void discard_until __P((int));
 
 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
+#if !defined (ALIAS)
+typedef void *alias_t;
+#endif
 static void push_string __P((char *, int, alias_t *));
 static void pop_string __P((void));
 static void free_string_list __P((void));
@@ -1399,10 +1402,6 @@
 
 #if defined (ALIAS) || defined (DPAREN_ARITHMETIC)
 
-#if !defined (ALIAS)
-typedef void *alias_t;
-#endif
-
 #define END_OF_ALIAS 0
 
 /*