Special-case flag value of 0. Instead of returning the first random

* gobject/genums.c: (g_flags_get_first_value): Special-case flag
value of 0. Instead of returning the first random GFlagsValue
we come across, return the GFlagsValue for 0 if it exists or
NULL if it does not exist. Never return the GFlagsValue for 0
if the requested flags value is nonzero.

ChangeLog

@@ -1,3 +1,11 @@
+2005-08-12  Tim-Philipp Müller  <tim at centricular dot net>
+
+	* gobject/genums.c: (g_flags_get_first_value): Special-case flag
+	  value of 0. Instead of returning the first random GFlagsValue
+	  we come across, return the GFlagsValue for 0 if it exists or
+	  NULL if it does not exist. Never return the GFlagsValue for 0
+	  if the requested flags value is nonzero.
+
 2005-08-12  Matthias Clasen  <mclasen@redhat.com>
 
 	* configure.in: Bump version to 2.8.0

ChangeLog.pre-2-10

@@ -1,3 +1,11 @@
+2005-08-12  Tim-Philipp Müller  <tim at centricular dot net>
+
+	* gobject/genums.c: (g_flags_get_first_value): Special-case flag
+	  value of 0. Instead of returning the first random GFlagsValue
+	  we come across, return the GFlagsValue for 0 if it exists or
+	  NULL if it does not exist. Never return the GFlagsValue for 0
+	  if the requested flags value is nonzero.
+
 2005-08-12  Matthias Clasen  <mclasen@redhat.com>
 
 	* configure.in: Bump version to 2.8.0

ChangeLog.pre-2-12

@@ -1,3 +1,11 @@
+2005-08-12  Tim-Philipp Müller  <tim at centricular dot net>
+
+	* gobject/genums.c: (g_flags_get_first_value): Special-case flag
+	  value of 0. Instead of returning the first random GFlagsValue
+	  we come across, return the GFlagsValue for 0 if it exists or
+	  NULL if it does not exist. Never return the GFlagsValue for 0
+	  if the requested flags value is nonzero.
+
 2005-08-12  Matthias Clasen  <mclasen@redhat.com>
 
 	* configure.in: Bump version to 2.8.0

ChangeLog.pre-2-8

@@ -1,3 +1,11 @@
+2005-08-12  Tim-Philipp Müller  <tim at centricular dot net>
+
+	* gobject/genums.c: (g_flags_get_first_value): Special-case flag
+	  value of 0. Instead of returning the first random GFlagsValue
+	  we come across, return the GFlagsValue for 0 if it exists or
+	  NULL if it does not exist. Never return the GFlagsValue for 0
+	  if the requested flags value is nonzero.
+
 2005-08-12  Matthias Clasen  <mclasen@redhat.com>
 
 	* configure.in: Bump version to 2.8.0

gobject/genums.c

@@ -379,10 +379,19 @@ g_flags_get_first_value (GFlagsClass *flags_class,
   if (flags_class->n_values)
     {
       GFlagsValue *flags_value;
-      
+
-      for (flags_value = flags_class->values; flags_value->value_name; flags_value++)
+      if (value == 0)
-	if ((flags_value->value & value) == flags_value->value)
+        {
-	  return flags_value;
+          for (flags_value = flags_class->values; flags_value->value_name; flags_value++)
+            if (flags_value->value == 0)
+              return flags_value;
+        }
+      else
+        {
+          for (flags_value = flags_class->values; flags_value->value_name; flags_value++)
+            if (flags_value->value != 0 && (flags_value->value & value) == flags_value->value)
+              return flags_value;
+        }      
     }
   
   return NULL;