From 9053ebe6eeb2ae762655b982e27c341cb568366d Mon Sep 17 00:00:00 2001
From: Joel Carlson <JoelsonCarl@gmail.com>
Date: Tue, 9 Oct 2018 15:40:46 -0600
Subject: [PATCH] compiler/str.h: include stdarg.h for va_list
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With some toolchains, compilation of str.c produced the following error:

compiler/str.h:56:50: error: unknown type name ‘va_list’
 int str_vaddf(struct str *v, const char *format, va_list ap) ATTR(2,0);
                                                  ^~~~~~~

One toolchain had the following in its stdarg.h:
"We deliberately do not define va_list when called from
stdio.h, because ANSI C says that stdio.h is not supposed to
define va_list."

str.c includes stdio.h, but none of the prior includes result in the
inclusion of stdarg.h. Therefore, explicitly include it in str.h to fix
the issue on toolchains following this ANSI C rule.

Signed-off-by: Joel Carlson <JoelsonCarl@gmail.com>
---
 compiler/str.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compiler/str.h b/compiler/str.h
index 37a95a8..f2763c2 100644
--- a/compiler/str.h
+++ b/compiler/str.h
@@ -9,6 +9,7 @@
 
 #include <capnp_c.h>
 #include <stdlib.h>
+#include <stdarg.h>
 
 struct str {
 	char *str;