gui: linux: fix string buffer overflow

[olsrd.git] / gcc-warnings

diff --git a/gcc-warnings b/gcc-warnings
old mode 100644 (file)
new mode 100755 (executable)
index 7475f84..9bf8079
--- a/gcc-warnings
+++ b/gcc-warnings
@@ -1,32 +1,59 @@
-#!/bin/bash --norc
+#!/bin/sh
 #
-# We expect warning options for gcc as argumenst and return the ones which are accepted
-# by the given gcc.
+# We expect warning options for gcc as arguments and return the ones which are
+# accepted by the given gcc.
 #
-# $Id: gcc-warnings,v 1.1 2007/05/01 21:36:50 bernd67 Exp $
 
 set -ue
 #set -vx
 
+# make sure we do not use some locale ....
+export LANG=C LC_ALL=C LC_COLLATE=C LC_CTYPE=C LC_MESSAGES=C LC_NUMERIC=C
+
 OPTS=""
 for param; do
     case "$param" in
-    -W?*) OPTS="$OPTS $param";;
-    *)    echo "Ignoring $param" >&2
+    -[fWm]?*) OPTS="$OPTS $param";;
+    *)        echo "Ignoring $param" >&2
     esac
 done
 
-while read error; do 
-    case "$error" in
-    *error:\ unrecognized\ option*) opt="${error#*\`}"
-                                    opt="${opt%\'*}"
-                                    OPTS="${OPTS//$opt/}"
-                                    ;;
-    esac
-done < <(cat <<EOF | $CC $OPTS -E - 2>&1 >/dev/null
-    int main(void) {
-        return 0;
-    }
-    EOF)
-echo $OPTS
+testcompile() {
+    $CC $OPTS -x c -o /dev/null - 2>&1 <<- EOF
+       int main(void) {
+           return 0;
+       }
+EOF
+}
+
+parsetest() {
+    while read error; do 
+        case "$error" in
+        *:\ unrecognized\ *option\ \"*)
+            opt="${error#*\"}"
+            opt="${opt%\"*}"
+            ;;
+        *:\ unrecognized\ *option\ \`*)
+            opt="${error#*\`}"
+            opt="${opt%\'*}"
+            ;;
+        *) continue
+            ;;
+       esac
+       # if we come here, we have in $opt the option to remove. and
+       # we remove all instances. And we save agoinst leading "-"
+       NEW_OPTS=""
+       for o in $OPTS; do
+           case "$o" in
+               $opt) : echo "Removed $o" >&2;;
+               *)    NEW_OPTS="$NEW_OPTS $o";;
+           esac
+       done
+       OPTS="$NEW_OPTS"
+    done
+    echo $OPTS
+}
+
+testcompile | parsetest
+
 exit 0