From: Timo Sirainen <timo.sirainen@dovecot.fi>
Date: Fri, 22 Sep 2017 11:10:09 +0000 (+0300)
Subject: lib: Define i_unreached() to __builtin_unreachable() with STATIC_CHECKER
X-Git-Tag: 2.3.0.rc1~962
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e2e9ea6da9f3db5fd7fe467db79232d20d03832f;p=thirdparty%2Fdovecot%2Fcore.git

lib: Define i_unreached() to __builtin_unreachable() with STATIC_CHECKER

This helps clang's alpha.deadcode.UnreachableCode checker.
---

diff --git a/src/lib/macros.h b/src/lib/macros.h
index 2bb96300db..05879079c7 100644
--- a/src/lib/macros.h
+++ b/src/lib/macros.h
@@ -221,8 +221,12 @@
 	} \
 	} STMT_END
 
-#define i_unreached() \
+#ifndef STATIC_CHECKER
+#  define i_unreached() \
 	i_panic("file %s: line %d: unreached", __FILE__, __LINE__)
+#else
+#  define i_unreached() __builtin_unreachable()
+#endif
 
 /* Convenience macros to test the versions of dovecot. */
 #if defined DOVECOT_VERSION_MAJOR && defined DOVECOT_VERSION_MINOR