diff -r 56cd8111b7f7 -r 41300fa6a67c src/corelib/codecs/qiconvcodec.cpp
--- a/src/corelib/codecs/qiconvcodec.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/src/corelib/codecs/qiconvcodec.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -378,7 +378,7 @@
     }
 
     int invalidCount = 0;
-    do {
+    while (inBytesLeft != 0) {
         if (iconv(state->cd, inBytesPtr, &inBytesLeft, &outBytes, &outBytesLeft) == (size_t) -1) {
             if (errno == EINVAL && convState) {
                 // buffer ends in a surrogate
@@ -418,7 +418,7 @@
                 }
             }
         }
-    } while (inBytesLeft != 0);
+    }
 
     // reset to initial state
     iconv(state->cd, 0, &inBytesLeft, 0, &outBytesLeft);