tests/run: Honor $TMPDIR if the variable is set.

Otherwise use /dev/shm.

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/run b/tests/run
index 31af03e..d823f0a 100755
--- a/tests/run
+++ b/tests/run
@@ -36,7 +36,7 @@ if [ ! -d "$TESTDIR" ]; then
     exit 1
 fi
 
-ROOTDIR="$(mktemp --tmpdir=/dev/shm --directory "$NAME.XXXXXXXXXX")"
+ROOTDIR="$(mktemp --tmpdir="${TMPDIR:-/dev/shm}" --directory "$NAME.XXXXXXXXXX")"
 trap 'rm -rf -- "$ROOTDIR"' EXIT INT TERM
 
 STDOUT="$ROOTDIR/stdout"