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implement the nonstandard GNU function fpurge

this is a really ugly and backwards function, but its presence will
prevent lots of broken gnulib software from trying to define its own
version of fpurge and thereby failing to build or worse.
Rich Felker преди 13 години
родител
ревизия
7640497f5f
променени са 2 файла, в които са добавени 12 реда и са изтрити 0 реда
  1. 1 0
      include/stdio.h
  2. 11 0
      src/stdio/fpurge.c

+ 1 - 0
include/stdio.h

@@ -158,6 +158,7 @@ int asprintf(char **, const char *, ...);
 int vasprintf(char **, const char *, va_list);
 void setlinebuf(FILE *);
 void setbuffer(FILE *, char *, size_t);
+int fpurge(FILE *);
 #endif
 
 #ifdef __cplusplus

+ 11 - 0
src/stdio/fpurge.c

@@ -0,0 +1,11 @@
+#define _GNU_SOURCE
+#include "stdio_impl.h"
+
+int __fpurge(FILE *f)
+{
+	f->wpos = f->wbase = f->wend = 0;
+	f->rpos = f->rend = 0;
+	return 0;
+}
+
+weak_alias(__fpurge, fpurge);