From: zack <zack@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 23 Mar 2001 01:16:22 +0000 (+0000)
Subject: 	* mkconfig.sh: Use a subshell with redirected stdout,
X-Git-Url: http://git.sourceforge.jp/view?a=commitdiff_plain;h=02947292b1fa2c5103562fedab076d2f6622ca95;p=pf3gnuchains%2Fgcc-fork.git

	* mkconfig.sh: Use a subshell with redirected stdout,
	instead of closing stdout and confusing commands that run
	afterward.  Throw away output of cmp.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@40765 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c94dacc5994..07dcc2f4b51 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2001-03-22  Zack Weinberg  <zackw@stanford.edu>
+
+	* mkconfig.sh: Use a subshell with redirected stdout,
+	instead of closing stdout and confusing commands that run
+	afterward.  Throw away output of cmp.
+
 2001-03-22  Gordon Sadler  <gbsadler1@lcisp.com>
 
 	* Makefile.in (stage1_build): Pass CFLAGS to stage1_build.
diff --git a/gcc/mkconfig.sh b/gcc/mkconfig.sh
index e89d382e002..5250708fcec 100644
--- a/gcc/mkconfig.sh
+++ b/gcc/mkconfig.sh
@@ -12,7 +12,10 @@ fi
 
 output=$1
 rm -f $output.T
-exec > $output.T
+
+# We used to exec > $output.T but apparently this has bugs.
+# Use a redirected subshell instead.
+(
 
 # Define TARGET_CPU_DEFAULT if the system wants one.
 # This substitutes for lots of *.h files.
@@ -53,10 +56,10 @@ echo "#include \"insn-codes.h\""
 echo "#include \"insn-flags.h\""
 echo "#endif"
 
-exec >&-
+) > $output.T
 
 # Avoid changing the actual file if possible.
-if [ -f $output ] && cmp $output.T $output; then
+if [ -f $output ] && cmp $output.T $output >/dev/null 2>&1; then
     echo $output is unchanged >&2
     rm -f $output.T
 else