diff --git a/Makefile b/Makefile
index 17880bf29..60fe8edf6 100644
--- a/Makefile
+++ b/Makefile
@@ -452,7 +452,7 @@ test/testlibrary.o: test/testlibrary.cpp lib/library.h lib/config.h lib/path.h l
 test/testmathlib.o: test/testmathlib.cpp lib/mathlib.h lib/config.h test/testsuite.h lib/errorlogger.h lib/suppressions.h test/redirect.h lib/library.h lib/path.h
 	$(CXX) ${INCLUDE_FOR_TEST} $(CPPFLAGS) $(CFG) $(CXXFLAGS) -std=c++0x -c -o test/testmathlib.o test/testmathlib.cpp
 
-test/testmemleak.o: test/testmemleak.cpp lib/tokenize.h lib/errorlogger.h lib/config.h lib/suppressions.h lib/tokenlist.h lib/checkmemoryleak.h lib/check.h lib/token.h lib/valueflow.h lib/mathlib.h lib/settings.h lib/library.h lib/path.h lib/standards.h lib/timer.h test/testsuite.h test/redirect.h lib/symboldatabase.h
+test/testmemleak.o: test/testmemleak.cpp lib/tokenize.h lib/errorlogger.h lib/config.h lib/suppressions.h lib/tokenlist.h lib/checkmemoryleak.h lib/check.h lib/token.h lib/valueflow.h lib/mathlib.h lib/settings.h lib/library.h lib/path.h lib/standards.h lib/timer.h test/testsuite.h test/redirect.h lib/symboldatabase.h lib/preprocessor.h
 	$(CXX) ${INCLUDE_FOR_TEST} $(CPPFLAGS) $(CFG) $(CXXFLAGS) -std=c++0x -c -o test/testmemleak.o test/testmemleak.cpp
 
 test/testnonreentrantfunctions.o: test/testnonreentrantfunctions.cpp lib/tokenize.h lib/errorlogger.h lib/config.h lib/suppressions.h lib/tokenlist.h lib/checknonreentrantfunctions.h lib/check.h lib/token.h lib/valueflow.h lib/mathlib.h lib/settings.h lib/library.h lib/path.h lib/standards.h lib/timer.h test/testsuite.h test/redirect.h
diff --git a/cfg/gtk.cfg b/cfg/gtk.cfg
index 4fa9044e1..5071aa3a7 100644
--- a/cfg/gtk.cfg
+++ b/cfg/gtk.cfg
@@ -1,6 +1,10 @@
 <?xml version="1.0"?>
 <!-- THIS FILE IS GENERATED AUTOMATICALLY. See https://github.com/scriptum/cppcheck-libs -->
 <def>
+  <define name="g_return_if_fail(expr)" value="do{if(!(expr)){return;}}while(0)"/>
+  <define name="g_return_val_if_fail(expr, val)" value="do{if(!(expr)){return val;}}while(0)"/>
+  <define name="g_return_if_reached()" value="do{return;}while(0)"/>
+  <define name="g_return_val_if_reached(val)" value="do{return val;}while(0)"/>
   <memory>
     <alloc init="true">g_thread_new</alloc>
     <alloc init="true">g_thread_try_new</alloc>
diff --git a/lib/library.cpp b/lib/library.cpp
index 61270e35b..5711d8296 100644
--- a/lib/library.cpp
+++ b/lib/library.cpp
@@ -127,6 +127,20 @@ bool Library::load(const tinyxml2::XMLDocument &doc)
             }
         }
 
+        else if (strcmp(node->Name(),"define")==0) {
+            const char *name = node->Attribute("name");
+            if (name == NULL)
+                return false;
+            const char *value = node->Attribute("value");
+            if (value == NULL)
+                return false;
+            defines.push_back(std::string("#define ") +
+                              name +
+                              " " +
+                              value +
+                              "\n");
+        }
+
         else if (strcmp(node->Name(),"function")==0) {
             const char *name = node->Attribute("name");
             if (name == NULL)
diff --git a/lib/library.h b/lib/library.h
index 475e7cf3a..95bef7fb1 100644
--- a/lib/library.h
+++ b/lib/library.h
@@ -269,6 +269,7 @@ public:
     }
 
     std::set<std::string> returnuninitdata;
+    std::vector<std::string> defines; // to provide some library defines
 
 private:
     class ExportedFunctions {
diff --git a/lib/preprocessor.cpp b/lib/preprocessor.cpp
index ccd0491e1..6fe72091b 100644
--- a/lib/preprocessor.cpp
+++ b/lib/preprocessor.cpp
@@ -994,6 +994,13 @@ void Preprocessor::preprocess(std::istream &srcCodeStream, std::string &processe
                 "#endfile\n"
                 ;
         }
+        
+        for (std::vector<std::string>::iterator it = _settings->library.defines.begin();
+             it != _settings->library.defines.end();
+             ++it)
+        {
+            forcedIncludes += *it;
+        }
     }
 
     if (!forcedIncludes.empty()) {
diff --git a/test/testmemleak.cpp b/test/testmemleak.cpp
index a80f3486e..63a94d045 100644
--- a/test/testmemleak.cpp
+++ b/test/testmemleak.cpp
@@ -23,6 +23,7 @@
 #include "checkmemoryleak.h"
 #include "testsuite.h"
 #include "symboldatabase.h"
+#include "preprocessor.h"
 #include <sstream>
 
 extern std::ostringstream errout;
@@ -6273,3 +6274,57 @@ private:
     }
 };
 REGISTER_TEST(TestMemleakNoVar)
+
+
+
+
+
+class TestMemleakGLib : public TestFixture {
+public:
+    TestMemleakGLib() : TestFixture("TestMemleakGLib") {
+    }
+
+private:
+    void check(const char code[]) {
+        // Clear the error buffer..
+        errout.str("");
+
+        Settings settings;
+        LOAD_LIB("gtk.cfg");
+        settings.library = _lib;
+        
+        // Preprocess...
+        Preprocessor preprocessor(&settings, this);
+        std::istringstream istrpreproc(code);
+        std::map<std::string, std::string> actual;
+        preprocessor.preprocess(istrpreproc, actual, "test.c");
+
+        // Tokenize..
+        Tokenizer tokenizer(&settings, this);
+        std::istringstream istr(actual[""]);
+        tokenizer.tokenize(istr, "test.c");
+        tokenizer.simplifyTokenList2();
+
+        // Check for memory leaks..
+        CheckMemoryLeakInFunction checkMemoryLeak(&tokenizer, &settings, this);
+        checkMemoryLeak.checkReallocUsage();
+        checkMemoryLeak.check();
+    }
+
+    void run() {
+        TEST_CASE(glib1);
+    }
+
+    void glib1() {
+        check("void f(gchar *_a, gchar *_b) {"
+              "  g_return_if_fail(_a);"
+              "  gchar *a = g_strdup(_a);"
+              "  g_return_if_fail(_b);"
+              "  gchar *b = g_strdup(_b);"
+              "  g_free(a);"
+              "  g_free(b);"
+              "}");
+        ASSERT_EQUALS("[test.c:1]: (error) Memory leak: a\n", errout.str());
+    }
+};
+static TestMemleakGLib testMemleakGLib;