From dab1ed1529873bbaa4dd1a0b31d9615440a78cd4 Mon Sep 17 00:00:00 2001
From: tjr <tjr@FreeBSD.org>
Date: Wed, 17 Mar 2004 12:46:17 +0000
Subject: Re-add description of putc() macro (back out rev. 1.13.)

---
 lib/libc/stdio/putc.3 | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

(limited to 'lib/libc/stdio')

diff --git a/lib/libc/stdio/putc.3 b/lib/libc/stdio/putc.3
index 2476f5f..e149630 100644
--- a/lib/libc/stdio/putc.3
+++ b/lib/libc/stdio/putc.3
@@ -75,8 +75,14 @@ to the output stream pointed to by
 .Pp
 The
 .Fn putc
-function acts essentially identically to
-.Fn fputc .
+macro acts essentially identically to
+.Fn fputc ,
+but is a macro that expands in-line.
+It may evaluate
+.Fa stream
+more than once, so arguments given to
+.Fn putc
+should not be expressions with potential side effects.
 .Pp
 The
 .Fn putchar
-- 
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