[REPOST] bad test for sys_siglist

[Alexander E. Patrakov]

Sorry if this is a duplicate, my earlier post didn't show up in bash-bug 
archives.

Configuration Information [Automatically generated, do not change]:
Machine: i486
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i486' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i486-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL 
-DHAVE_CONFIG_H   -I.  -I. -I./include -I./lib   -Os -s -fno-strict-aliasing 
-mtune=i686
uname output: Linux lfslivecd 2.6.18.3 #2 SMP Thu Dec 7 14:05:09 GMT 2006 
i686 pentium3 i386 GNU/Linux
Machine Type: i486-pc-linux-gnu

Bash Version: 3.2
Patch Level: 5
Release Status: release

Description:
        I see the following in config.log:

configure:26967: checking for sys_siglist in system C library
configure:27004: gcc -o conftest -g -O2   conftest.c -ldl  >&5
conftest.c:306: error: conflicting types for 'sys_siglist'
/usr/include/signal.h:305: error: previous declaration of 'sys_siglist' was here
conftest.c: In function 'main':
conftest.c:311: warning: incompatible implicit declaration of built-in function
'exit'
configure:27007: $? = 1
configure: program exited with status 1
configure: failed program was:
| /* confdefs.h.  */
<snip>
| #define HAVE_DECL_SYS_SIGLIST 1
<snip>
| /* end confdefs.h.  */
|
| #include <sys/types.h>
| #include <signal.h>
| #ifdef HAVE_UNISTD_H
| #include <unistd.h>
| #endif
| #ifndef SYS_SIGLIST_DECLARED
| extern char *sys_siglist[];
| #endif
| main()
| {
| char *msg = sys_siglist[2];
| exit(msg == 0);
| }
configure:27033: result: no

        so this is caused by mismatch of HAVE_DECL_SYS_SIGLIST vs
        SYS_SIGLIST_DECLARED (which is used exactly once in the
        ./configure script, in this ifndef line, and thus is never
        defined)

Repeat-By:
        ./configure (on linux with glibc)

Fix:
        Replace SYS_SIGLIST_DECLARED with HAVE_DECL_SYS_SIGLIST
        in aclocal.m4, rerun autoconf

        I understand that _sys_siglist is found and that on glibc systems,
        it is the same thing, so this bug is not very harmful.

--
Alexander E. Patrakov