From 0c39f5d219dfaae7a70e0715bde6bd41c3d2900e Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Sat, 16 Feb 2019 12:33:30 -0800
Subject: [PATCH] configure: Treat -Wreturn-type as an error.

---
 configure.ac | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/configure.ac b/configure.ac
index e324dd045..b2978052e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -523,6 +523,14 @@ CHARYBDIS_C_GCC_TRY_FLAGS([-Wplacement-new=2], charybdis_cv_c_gcc_w_placement_ne
 CHARYBDIS_C_GCC_TRY_FLAGS([-Wundef], charybdis_cv_c_gcc_w_undef)
 CHARYBDIS_C_GCC_TRY_FLAGS([-Wodr], charybdis_cv_c_gcc_w_odr)
 
+dnl
+dnl List of warnings treated as errors
+dnl
+
+dnl Uninitialized return values are not useful in this project; forgetting
+dnl to return from a function is always a developer mistake here.
+CHARYBDIS_C_GCC_TRY_FLAGS([-Werror=return-type], charybdis_cv_c_gcc_w_error_return_type)
+
 dnl
 dnl List of warnings we suppress:
 dnl