X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=functions%2F_PDCLIB%2Fprepwrite.c;h=dcdc970be8da45fe383e585c7c2fdff0f42dddee;hb=d865c4403fc91d1f1ac95ba76febcee9f429bb97;hp=c5a4c127543b40b14f016c60b3ac0fd04272538d;hpb=9e1a90fce7fa732ebca11e98a41dc8418746b942;p=pdclib

diff --git a/functions/_PDCLIB/prepwrite.c b/functions/_PDCLIB/prepwrite.c
index c5a4c12..dcdc970 100644
--- a/functions/_PDCLIB/prepwrite.c
+++ b/functions/_PDCLIB/prepwrite.c
@@ -1,5 +1,3 @@
-/* $Id$ */
-
 /* _PDCLIB_prepwrite( struct _PDCLIB_file_t * )
 
    This file is part of the Public Domain C Library (PDCLib).
@@ -8,13 +6,19 @@
 
 #include <stdio.h>
 
+#ifndef REGTEST
+
 int _PDCLIB_prepwrite( struct _PDCLIB_file_t * stream )
 {
     if ( ( stream->bufidx < stream->bufend ) || ( stream->ungetidx > 0 ) ||
          ( stream->status & ( _PDCLIB_FREAD | _PDCLIB_ERRORFLAG | _PDCLIB_WIDESTREAM | _PDCLIB_EOFFLAG ) ) ||
          ! ( stream->status & ( _PDCLIB_FWRITE | _PDCLIB_FAPPEND | _PDCLIB_FRW ) ) )
     {
-        _PDCLIB_errno = _PDCLIB_EIO;
+        /* Function called on illegal (e.g. input) stream.
+           See the comments on implementation-defined errno values in
+           <_PDCLIB_config.h>.
+        */
+        _PDCLIB_errno = _PDCLIB_ERROR;
         stream->status |= _PDCLIB_ERRORFLAG;
         return EOF;
     }
@@ -22,8 +26,11 @@ int _PDCLIB_prepwrite( struct _PDCLIB_file_t * stream )
     return 0;
 }
 
+#endif
+
 #ifdef TEST
-#include <_PDCLIB_test.h>
+
+#include "_PDCLIB_test.h"
 
 int main( void )
 {
@@ -32,4 +39,3 @@ int main( void )
 }
 
 #endif
-