diff -p -up comm-1.9.1/mozilla/xpcom/base/nsTraceRefcntImpl.cpp.literal comm-1.9.1/mozilla/xpcom/base/nsTraceRefcntImpl.cpp --- comm-1.9.1/mozilla/xpcom/base/nsTraceRefcntImpl.cpp.literal 2009-12-02 11:01:51.000000000 -0200 +++ comm-1.9.1/mozilla/xpcom/base/nsTraceRefcntImpl.cpp 2009-12-02 11:02:04.000000000 -0200 @@ -834,7 +834,7 @@ static void PrintStackFrame(void *aPC, v NS_DescribeCodeAddress(aPC, &details); NS_FormatCodeAddressDetails(aPC, &details, buf, sizeof(buf)); - fprintf(stream, buf); + fprintf(stream, "%s", buf); } }