Re: Shell crash on SunOS 4.1.3

[Akim Demaille]

>>>>> "akim" == akim  <address@hidden> writes:

akim> Thanks.  We must be hitting some internal size limitation I
akim> guess.  I will apply the patch you suggest.

I'm applying the patch below.  Harlan, please, try this Autoconf, or
maybe even the test suite (but I'm quite pessimistic wrt the
possibility of running the test suite on these machines), because I
really fear yet another occurrence of the 8th bit bug.

Testing should be extremely simple:

cat >configure.ac
AC_INIT
AC_OUTPUT(foo)
^D

touch foo.in

autoconf

./configure

I'm interesting in knowing whether your system finds foo.in or not.

        Akim

Index: ChangeLog
from  Akim Demaille  <address@hidden>
        * acgeneral.m4 (_AC_OUTPUT_CONFIG_STATUS): Work around a currently
        impossible to describe bug of SunOS 4.1.3 which causes a shell
        crash when using the `VAR=${VAR="$default"}'.
        Reported and diagnosed by Kevin Ryde.

Index: acgeneral.m4
===================================================================
RCS file: /cvs/autoconf/acgeneral.m4,v
retrieving revision 1.670
diff -u -u -r1.670 acgeneral.m4
--- acgeneral.m4 2001/01/22 09:06:11 1.670
+++ acgeneral.m4 2001/01/22 11:13:10
@@ -3746,18 +3746,20 @@
 [cat >>$CONFIG_STATUS <<\EOF
 # If the user did not use the arguments to specify the items to instantiate,
 # then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
 if $ac_need_defaults; then
 m4_ifset([AC_LIST_FILES],
-[  CONFIG_FILES=${CONFIG_FILES="$config_files"}
+[  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
 ])dnl
 m4_ifset([AC_LIST_HEADERS],
-[  CONFIG_HEADERS=${CONFIG_HEADERS="$config_headers"}
+[  test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
 ])dnl
 m4_ifset([AC_LIST_LINKS],
-[  CONFIG_LINKS=${CONFIG_LINKS="$config_links"}
+[  test "${CONFIG_LINKS+set}" = set || CONFIG_LINKS=$config_links
 ])dnl
 m4_ifset([AC_LIST_COMMANDS],
-[  CONFIG_COMMANDS=${CONFIG_COMMANDS="$config_commands"}
+[  test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
 ])dnl
 fi