1 files changed, 5 insertions, 47 deletions
diff --git a/src/stdio/__overflow.c b/src/stdio/__overflow.c
index e35104de..3bb37923 100644
--- a/src/stdio/__overflow.c
+++ b/src/stdio/__overflow.c
@@ -1,52 +1,10 @@
 #include "stdio_impl.h"
 
-static int overflow(FILE *f, int c)
+int __overflow(FILE *f, int _c)
 {
-	/* Initialize if we're not already writing */
-	if (!f->wend) {
-		/* Fail if we're in error state or unwritable. */
-		if (f->flags & (F_ERR|F_NOWR)) return EOF;
-
-		/* Set byte orientation -1,0=>-1; 1=>1 */
-		f->mode |= f->mode-1;
-
-		/* Clear read buffer (easier than summoning nasal demons) */
-		f->rpos = f->rend = f->rstop = 0;
-
-		/* Activate write through the buffer */
-		f->wpos = f->wbase = f->buf;
-		f->wend = f->buf + f->buf_size;
-		f->wstop = (f->lbf < 0) ? f->wend - 1 : 0;
-	}
-
-	/* Buffer can always hold at least 1 byte... */
-	if (c != EOF) {
-		*f->wpos++ = c;
-		if (f->wpos <= f->wstop && c != f->lbf) return c;
-	}
-	/* ...since if the next call fails, buffer is empty. */
-	if (f->write(f, f->wbase, f->wpos - f->wbase) < 0) {
-		f->flags |= F_ERR;
-		f->wpos = f->wbase = f->wend = f->wstop = 0;
-		return EOF;
-	}
-
-	/* Buffer is empty so reset position to beginning */
-	f->wpos = f->wbase;
-
+	unsigned char c = _c;
+	if (!f->wend && __towrite(f)) return EOF;
+	if (f->wpos < f->wend && c != f->lbf) return *f->wpos++ = c;
+	if (f->write(f, &c, 1)!=1) return EOF;
 	return c;
 }
-
-int __overflow(FILE *f, int c)
-{
-	return overflow(f, c & 0xff);
-}
-
-int __oflow(FILE *f)
-{
-	overflow(f, EOF);
-	return (f->flags & F_ERR) ? EOF : 0;
-}
-
-/* Link flush-on-exit code iff any stdio write functions are linked. */
-int (*const __fflush_on_exit)(FILE *) = fflush;