Fix update-references for tests within subdirectories.

Fixes rust-lang#50438.

I'll make this more robust later for rust-lang#49815.

src/test/ui/update-references.sh

@@ -26,20 +26,21 @@ if [[ "$1" == "--help" || "$1" == "-h" || "$1" == "" || "$2" == "" ]]; then
  echo " $0 ../../../build/x86_64-apple-darwin/test/ui *.rs */*.rs"
 fi
 
+MYDIR=$(dirname $0)
 
 BUILD_DIR="$1"
 shift
 
 shopt -s nullglob
 
 while [[ "$1" != "" ]]; do
- MYDIR=$(dirname $1)
  for EXT in "stderr" "stdout" "fixed"; do
  for OUT_NAME in $BUILD_DIR/${1%.rs}.*$EXT; do
+ OUT_DIR=`dirname "$1"`
  OUT_BASE=`basename "$OUT_NAME"`
- if ! (diff $OUT_NAME $MYDIR/$OUT_BASE >& /dev/null); then
- echo updating $MYDIR/$OUT_BASE
- cp $OUT_NAME $MYDIR
+ if ! (diff $OUT_NAME $MYDIR/$OUT_DIR/$OUT_BASE >& /dev/null); then
+ echo updating $MYDIR/$OUT_DIR/$OUT_BASE
+ cp $OUT_NAME $MYDIR/$OUT_DIR
  fi
  done
  done