[binutils-gdb] gdb: fix shellcheck warnings SC2086 (missing double quotes) in gdbarch.sh

[binutils-gdb] gdb: fix shellcheck warnings SC2086 (missing double quotes) in gdbarch.sh

[Simon Marchi]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a6fc5ffc502238fcc5bce98868f4f353cc5d47d1

commit a6fc5ffc502238fcc5bce98868f4f353cc5d47d1
Author: Simon Marchi <simon.marchi@efficios.com>
Date:   Wed Apr 29 20:35:34 2020 -0400

    gdb: fix shellcheck warnings SC2086 (missing double quotes) in gdbarch.sh
    
    Fix all instances of:
    
        In gdbarch.sh line 31:
            if test ! -r ${file}
                         ^-----^ SC2086: Double quote to prevent globbing and word splitting.
    
        Did you mean:
            if test ! -r "${file}"
    
    Note that some instances of these are in text that is eval'ed.  I'm
    pretty sure that things could go wrong during the eval too, but that's
    not something shellcheck can check.
    
    gdb/ChangeLog:
    
            * gdbarch.sh: Use double quotes around variables.

Diff:
---
 gdb/ChangeLog  |  4 ++++
 gdb/gdbarch.sh | 16 ++++++++--------
 2 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index b6928233fb8..eefeac4c180 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2020-04-29  Simon Marchi  <simon.marchi@efficios.com>
+
+	* gdbarch.sh: Use double quotes around variables.
+
 2020-04-29  Simon Marchi  <simon.marchi@efficios.com>
 
 	* gdbarch.sh: Use %s with printf, instead of variables in the
diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh
index 2780a819f91..a934a7aa6bc 100755
--- a/gdb/gdbarch.sh
+++ b/gdb/gdbarch.sh
@@ -28,10 +28,10 @@ LC_ALL=C ; export LC_ALL
 compare_new ()
 {
     file=$1
-    if test ! -r ${file}
+    if test ! -r "${file}"
     then
 	echo "${file} missing? cp new-${file} ${file}" 1>&2
-    elif diff -u ${file} new-${file}
+    elif diff -u "${file}" "new-${file}"
     then
 	echo "${file} unchanged" 1>&2
     else
@@ -70,7 +70,7 @@ ${line}"
 	    line="`echo "${line}" | sed -e 's/;;/; ;/g' -e 's/;;/; ;/g'`"
 
 	    OFS="${IFS}" ; IFS="[;]"
-	    eval read ${read} <<EOF
+	    eval read "${read}" <<EOF
 ${line}
 EOF
 	    IFS="${OFS}"
@@ -86,9 +86,9 @@ EOF
 	    # that ended up with just that space character.
 	    for r in ${read}
 	    do
-		if eval test \"\${${r}}\" = \"\ \"
+		if eval test "\"\${${r}}\" = ' '"
 		then
-		    eval ${r}=""
+		    eval "${r}="
 		fi
 	    done
 
@@ -1227,7 +1227,7 @@ ${class} ${returntype} ${function} ($formal)
 EOF
     for r in ${read}
     do
-	eval echo \"\ \ \ \ ${r}=\${${r}}\"
+	eval echo "\"    ${r}=\${${r}}\""
     done
     if class_is_predicate_p && fallback_default_p
     then
@@ -2162,7 +2162,7 @@ do
 	printf "\n"
 	printf "void\n"
 	printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
-        printf "            `echo ${function} | sed -e 's/./ /g'`  gdbarch_%s_ftype %s)\n" "$function" "$function"
+        printf "            `echo "$function" | sed -e 's/./ /g'`  gdbarch_%s_ftype %s)\n" "$function" "$function"
 	printf "{\n"
 	printf "  gdbarch->%s = %s;\n" "$function" "$function"
 	printf "}\n"
@@ -2192,7 +2192,7 @@ do
 	printf "\n"
 	printf "void\n"
 	printf "set_gdbarch_%s (struct gdbarch *gdbarch,\n" "$function"
-        printf "            `echo ${function} | sed -e 's/./ /g'`  %s %s)\n" "$returntype" "$function"
+        printf "            `echo "$function" | sed -e 's/./ /g'`  %s %s)\n" "$returntype" "$function"
 	printf "{\n"
 	printf "  gdbarch->%s = %s;\n" "$function" "$function"
 	printf "}\n"