Suppress some unhelpful warnings when using clang.

* configure.ac: With clang, check for and use -Wno-switch,
-Wno-tautological-constant-out-of-range-compare and -Wno-pointer-sign.

* conf_post.h(assume): Use __builtin_unreachable for clang.

* src/filelock.c (lock_file_1): Rearrange to remove compiler warning
about excess arguments to snprintf.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 668ebeb8537..29cd8676584 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,10 @@
+2013-09-23  Jan Djärv  <jan.h.d@swipnet.se>
+
+        * filelock.c (lock_file_1): Rearrange to remove compiler warning
+        about excess arguments to snprintf.
+
+        * conf_post.h(assume): Use __builtin_unreachable for clang.
+
 2013-09-23  Juanma Barranquero  <lekktu@gmail.com>
 
         * w32console.c (initialize_w32_display): Remove unused variable hlinfo.