[gdb/testsuite] Clean up gdb/contrib/cc-with-tweaks.sh

Fix shellcheck warnings in script gdb/contrib/cc-with-tweaks.sh.

Tested on x86_64-linux.

Approved-by: Kevin Buettner <kevinb@redhat.com>

diff --git a/gdb/contrib/cc-with-tweaks.sh b/gdb/contrib/cc-with-tweaks.sh
index f760bd7c0a1b2a4ebd1483eb4b44eec998f27086..9d9c19c4430523386729b04b02527c07328a8a07 100755 (executable)
--- a/gdb/contrib/cc-with-tweaks.sh
+++ b/gdb/contrib/cc-with-tweaks.sh
@@ -50,7 +50,7 @@
 # If nothing is given, no changes are made
 
 myname=cc-with-tweaks.sh
-mydir=`dirname "$0"`
+mydir=$(dirname "$0")
 
 if [ -z "$GDB" ]
 then
@@ -112,7 +112,7 @@ if [ "$want_index" = true ]
 then
     if [ -z "$GDB_ADD_INDEX" ]
     then
-       if [ -f $mydir/gdb-add-index.sh ]
+       if [ -f "$mydir/gdb-add-index.sh" ]
        then
            GDB_ADD_INDEX="$mydir/gdb-add-index.sh"
        else
@@ -200,7 +200,7 @@ if [ "$want_index" = true ]; then
        cp "$f" "$tmpdir"
     done
 
-    tmpfile="$tmpdir/$(basename $output_file)"
+    tmpfile=$tmpdir/$(basename "$output_file")
     # Filter out these messages which would stop dejagnu testcase run:
     # echo "$myname: No index was created for $file" 1>&2
     # echo "$myname: [Was there no debuginfo? Was there already an index?]" 1>&2
@@ -209,7 +209,7 @@ if [ "$want_index" = true ]; then
     rc=${PIPESTATUS[0]}
     mv "$tmpfile" "$output_file"
     rm -f "$tmpdir"/*.dwo
-    [ $rc != 0 ] && exit $rc
+    [ "$rc" != 0 ] && exit "$rc"
 fi
 
 if [ "$want_index_cache" = true ]; then
@@ -268,9 +268,9 @@ elif [ "$want_multi" = true ]; then
     # new file in case dwz fails.
     rm -f "$dwz_file"
 
-    cp $output_file ${output_file}.alt
-    $DWZ -m "$dwz_file" "$output_file" ${output_file}.alt > /dev/null
-    rm -f ${output_file}.alt
+    cp "$output_file" "${output_file}.alt"
+    $DWZ -m "$dwz_file" "$output_file" "${output_file}.alt" > /dev/null
+    rm -f "${output_file}.alt"
 
     # Validate dwz's work by checking if the expected output file exists.
     if [ ! -f "$dwz_file" ]; then
@@ -280,14 +280,19 @@ elif [ "$want_multi" = true ]; then
 fi
 
 if [ "$want_dwp" = true ]; then
-    dwo_files=$($READELF -wi "${output_file}" | grep _dwo_name | \
-       sed -e 's/^.*: //' | sort | uniq)
+    mapfile -t dwo_files \
+           < \
+           <($READELF -wi "${output_file}" \
+                 | grep _dwo_name \
+                 | sed -e 's/^.*: //' \
+                 | sort \
+                 | uniq)
     rc=0
-    if [ -n "$dwo_files" ]; then
-       $DWP -o "${output_file}.dwp" ${dwo_files} > /dev/null
+    if  [ ${#dwo_files[@]} -ne 0 ]; then
+       $DWP -o "${output_file}.dwp" "${dwo_files[@]}" > /dev/null
        rc=$?
        [ $rc != 0 ] && exit $rc
-       rm -f ${dwo_files}
+       rm -f "${dwo_files[@]}"
     fi
 fi
 
@@ -322,9 +327,9 @@ if [ "$want_gnu_debuglink" = true ]; then
        # .gnu_debuglink to debug_file.
        $OBJCOPY --add-gnu-debuglink="$link" "${stripped_file}" \
                "${output_file}"
-       rc=$?
-       [ $rc != 0 ] && exit $rc
     )
+    rc=$?
+    [ $rc != 0 ] && exit $rc
 fi
 
 exit $rc