--- old/src/share/native/java/util/zip/Deflater.c	2009-07-08 16:41:02.000000000 +0200
+++ new/src/share/native/java/util/zip/Deflater.c	2009-07-08 16:41:02.000000000 +0200
@@ -137,14 +137,14 @@
             int strategy = (*env)->GetIntField(env, this, strategyID);
 
             in_buf = (jbyte *) malloc(this_len);
-            if (in_buf == 0) {
+            if (in_buf == 0 && this_len > 0) {
                 JNU_ThrowOutOfMemoryError(env, 0);
                 return 0;
             }
             (*env)->GetByteArrayRegion(env, this_buf, this_off, this_len, in_buf);
 
             out_buf = (jbyte *) malloc(len);
-            if (out_buf == 0) {
+            if (out_buf == 0 && len > 0) {
                 free(in_buf);
                 JNU_ThrowOutOfMemoryError(env, 0);
                 return 0;
@@ -180,14 +180,14 @@
             jboolean finish = (*env)->GetBooleanField(env, this, finishID);
 
             in_buf = (jbyte *) malloc(this_len);
-            if (in_buf == 0) {
+            if (in_buf == 0 && this_len > 0) {
                 JNU_ThrowOutOfMemoryError(env, 0);
                 return 0;
             }
             (*env)->GetByteArrayRegion(env, this_buf, this_off, this_len, in_buf);
 
             out_buf = (jbyte *) malloc(len);
-            if (out_buf == 0) {
+            if (out_buf == 0 && len > 0) {
                 free(in_buf);
                 JNU_ThrowOutOfMemoryError(env, 0);
                 return 0;