Rollup merge of rust-lang#50447 - ehuss:fix-update-references, r=alexcrichton

Fix update-references for tests within subdirectories.

Fixes rust-lang#50438.

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

Author: alexcrichton

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