fix in error reporting

diff --git a/util/cpp/error.c b/util/cpp/error.c
index 8bafd6b..4ef56a1 100644 (file)
--- a/util/cpp/error.c
+++ b/util/cpp/error.c
@@ -20,7 +20,10 @@ int err_occurred;
 err_hdr(s)
        char *s;
 {
-       fprint(ERROUT, "\"%s\", line %d: %s", FileName, LineNumber, s);
+       if (FileName) {
+               fprint(ERROUT, "\"%s\", line %d: %s", FileName, LineNumber, s);
+       }
+       else    fprint(ERROUT, s);
 }
 
 /*VARARGS1*/