diff --git a/core/org.eclipse.cdt.core.tests/misc/org/eclipse/cdt/core/internal/errorparsers/tests/RegexErrorParserTests.java b/core/org.eclipse.cdt.core.tests/misc/org/eclipse/cdt/core/internal/errorparsers/tests/RegexErrorParserTests.java
index cbdfc98d7af..2c92b9b3a57 100644
--- a/core/org.eclipse.cdt.core.tests/misc/org/eclipse/cdt/core/internal/errorparsers/tests/RegexErrorParserTests.java
+++ b/core/org.eclipse.cdt.core.tests/misc/org/eclipse/cdt/core/internal/errorparsers/tests/RegexErrorParserTests.java
@@ -686,4 +686,26 @@ public class RegexErrorParserTests extends TestCase {
 			assertNotSame(clone1, clone2);
 		}
 	}
+	
+	/**
+	 * Check how RegexErrorParser parses output.
+	 *
+	 * @throws Exception...
+	 */
+	public void testRegexErrorParserExternalLocation_bug301338() throws Exception {
+		RegexErrorParser regexErrorParser = new RegexErrorParser();
+		regexErrorParser.addPattern(new RegexErrorPattern("pattern",
+				"", "", "", "$0", IMarkerGenerator.SEVERITY_ERROR_RESOURCE, true));
+
+		ErrorParserManager epManager = new ErrorParserManager(fProject, markerGenerator, new String[0]);
+
+		regexErrorParser.processLine("wrong pattern", epManager);
+		regexErrorParser.processLine("pattern wrong", epManager);
+
+		errorList.clear();
+		epManager.reportProblems();
+		assertEquals(0, errorList.size());
+	}
+
+
 }
diff --git a/core/org.eclipse.cdt.core/plugin.xml b/core/org.eclipse.cdt.core/plugin.xml
index 22b1e3f4d7b..89b5899e0d7 100644
--- a/core/org.eclipse.cdt.core/plugin.xml
+++ b/core/org.eclipse.cdt.core/plugin.xml
@@ -178,14 +178,14 @@
             class="org.eclipse.cdt.core.errorparsers.RegexErrorParser"
             id="org.eclipse.cdt.core.GmakeErrorParser"
             name="%CDTGNUMakeErrorParser.name">
-         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex="make.*:.*Error.*\(ignored\)" severity="Info"/>
+         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex=".*make.*:.*Error.*\(ignored\)" severity="Info"/>
          <pattern description-expr="make: $3" eat-processed-line="true" file-expr="$1" line-expr="$2" regex="(.*):(\d*): (\*\*\* .*)" severity="Error"/>
-         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex="make.*: \*\*\* .*" severity="Error"/>
-         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex="make.*: Target (.*) not remade because of errors." severity="Error"/>
+         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex=".*make.*: \*\*\* .*" severity="Error"/>
+         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex=".*make.*: Target (.*) not remade because of errors." severity="Error"/>
          <pattern description-expr="make: $3" eat-processed-line="true" file-expr="$1" line-expr="$2" regex="(.*):(\d*): warning: (.*)" severity="Warning"/>
-         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex="make.*\[.*\] Error [-]{0,1}\d*.*" severity="Warning"/>
+         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex=".*make.*\[.*\] Error [-]{0,1}\d*.*" severity="Warning"/>
          <pattern description-expr="make: $3" eat-processed-line="true" file-expr="$1" line-expr="$2" regex="(.*):(\d*): (.*No such file or directory)" severity="Warning"/>
-         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex="make.*: Circular .* dependency dropped." severity="Warning"/>
+         <pattern description-expr="$0" eat-processed-line="true" file-expr="" line-expr="" regex=".*make.*: Circular .* dependency dropped." severity="Warning"/>
       </errorparser>
    </extension>
    <extension
diff --git a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/RegexErrorPattern.java b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/RegexErrorPattern.java
index 95cc485fea7..eeb2ac99223 100644
--- a/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/RegexErrorPattern.java
+++ b/core/org.eclipse.cdt.core/src/org/eclipse/cdt/core/errorparsers/RegexErrorPattern.java
@@ -277,7 +277,8 @@ public class RegexErrorPattern implements Cloneable {
 	 */
 	public boolean processLine(String line, ErrorParserManager eoParser) {
 		Matcher matcher = getMatcher(line);
-		if (!matcher.find())
+		// pattern should cover the whole line
+		if (!(matcher.find() && matcher.group(0).length()==line.length()))
 			return false;
 
 		recordError(matcher, eoParser);