PDCLIB-16: Add _unlocked variations of all I/O routines; move work into these versions

[pdclib] / functions / stdio / clearerr.c

diff --git a/functions/stdio/clearerr.c b/functions/stdio/clearerr.c
index af25029032f1fc4d79ec89654bb4bd690a81592e..2b032bd21833c8ff8b7e631882b6cbd1d9339c5e 100644 (file)
--- a/functions/stdio/clearerr.c
+++ b/functions/stdio/clearerr.c
@@ -10,11 +10,18 @@
 
 #ifndef REGTEST
 
-void clearerr( struct _PDCLIB_file_t * stream )
+void clearerr_unlocked( struct _PDCLIB_file_t * stream )
 {
     stream->status &= ~( _PDCLIB_ERRORFLAG | _PDCLIB_EOFFLAG );
 }
 
+void clearerr( struct _PDCLIB_file_t * stream )
+{
+    flockfile( stream );
+    clearerr_unlocked( stream );
+    funlockfile( stream );
+}
+
 #endif
 
 #ifdef TEST
@@ -28,6 +35,7 @@ int main( void )
     TESTCASE( ! ferror( fh ) );
     TESTCASE( ! feof( fh ) );
     /* Reading from input stream - should provoke error */
+    /* FIXME: Apparently glibc disagrees on this assumption. How to provoke error on glibc? */
     TESTCASE( fgetc( fh ) == EOF );
     TESTCASE( ferror( fh ) );
     TESTCASE( ! feof( fh ) );