9c, 9l: use $TMPDIR if available (#272)

NixOS sandboxed builds (at least on Mac) don't have access to /tmp,
and this should be better POSIX.

1 files changed, 1 insertions, 1 deletions

diff --git a/bin/9c b/bin/9c
index 3ffb716c..88c47887 100755
--- a/bin/9c
+++ b/bin/9c
@@ -133,7 +133,7 @@ case "$tag" in
 esac
 
 # N.B. Must use temp file to avoid pipe; pipe loses status.
-xtmp=/tmp/9c.$$.$USER.out
+xtmp=${TMPDIR-/tmp}/9c.$$.$USER.out
 $cc -DPLAN9PORT -I$PLAN9/include $cflags "$@" 2>$xtmp
 status=$?
 quiet $xtmp