From 97f64490cfe7a64962a37a953b9aac8ae30d2e32 Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Mon, 23 Apr 2018 15:39:07 +1000
Subject: [PATCH] debug: add WARN_RETURN macro

---
 debug.hpp | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/debug.hpp b/debug.hpp
index 57f72fd7..c965e693 100644
--- a/debug.hpp
+++ b/debug.hpp
@@ -78,6 +78,21 @@
 } while (0)
 
 
+#define WARN_RETURN(CONDITION,VALUE) do {                           \
+    if (const auto& __warn_return = (CONDITION); !!__warn_return) { \
+        if constexpr (debug_enabled) {                              \
+            std::clog << __FILE__ << ':'                            \
+                      << __LINE__ << ':'                            \
+                      << __PRETTY_FUNCTION__ << "; "                \
+                      << #CONDITION << '\n';                        \
+            breakpoint ();                                          \
+        }                                                           \
+                                                                    \
+        return (VALUE);                                             \
+    }                                                               \
+} while (0)
+
+
 ///////////////////////////////////////////////////////////////////////////////
 #define _CHECK_PANIC(FMT,...) do {                          \
     panic ("%s:%s:%i:%s\n" FMT,                             \