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-rw-r--r--libc/stdio/_stdio.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libc/stdio/_stdio.h b/libc/stdio/_stdio.h
index 85a00bb95..e4aa5d740 100644
--- a/libc/stdio/_stdio.h
+++ b/libc/stdio/_stdio.h
@@ -260,6 +260,8 @@ extern int __stdio_trans2w(FILE *__restrict stream) attribute_hidden;
extern int __stdio_trans2r_o(FILE *__restrict stream, int oflag) attribute_hidden;
extern int __stdio_trans2w_o(FILE *__restrict stream, int oflag) attribute_hidden;
+extern int __setvbuf (FILE *__restrict __stream, char *__restrict __buf,
+ int __modes, size_t __n) __THROW attribute_hidden;
/**********************************************************************/
#ifdef __STDIO_BUFFERS