diagnostic: silence a few -Weverything diagnostics on clang < 5

simde-detect-clang.h

@@ -103,7 +103,7 @@
 #  define SIMDE_DETECT_CLANG_VERSION_NOT(major, minor, revision) (SIMDE_DETECT_CLANG_VERSION < ((major * 10000) + (minor * 1000) + (revision)))
 #else
 #  define SIMDE_DETECT_CLANG_VERSION_CHECK(major, minor, revision) (0)
-#  define SIMDE_DETECT_CLANG_VERSION_NOT(major, minor, revision) (1)
+#  define SIMDE_DETECT_CLANG_VERSION_NOT(major, minor, revision) (0)
 #endif
 
 #endif /* !defined(SIMDE_DETECT_CLANG_H) */

simde-diagnostic.h

@@ -301,7 +301,13 @@
  * -Wc++98-compat-pedantic which says 'long long' is incompatible with
  * C++98. */
 #if HEDLEY_HAS_WARNING("-Wc++98-compat-pedantic")
-  #define SIMDE_DIAGNOSTIC_DISABLE_CPP98_COMPAT_PEDANTIC_ _Pragma("clang diagnostic ignored \"-Wc++98-compat-pedantic\"")
+  #if HEDLEY_HAS_WARNING("-Wc++11-long-long")
+    #define SIMDE_DIAGNOSTIC_DISABLE_CPP98_COMPAT_PEDANTIC_ \
+      _Pragma("clang diagnostic ignored \"-Wc++98-compat-pedantic\"") \
+      _Pragma("clang diagnostic ignored \"-Wc++11-long-long\"")
+  #else
+    #define SIMDE_DIAGNOSTIC_DISABLE_CPP98_COMPAT_PEDANTIC_ _Pragma("clang diagnostic ignored \"-Wc++98-compat-pedantic\"")
+  #endif
 #else
   #define SIMDE_DIAGNOSTIC_DISABLE_CPP98_COMPAT_PEDANTIC_
 #endif
@@ -346,6 +352,19 @@
   #define SIMDE_DIAGNOSTIC_DISABLE_BUGGY_VECTOR_CONVERSION_
 #endif
 
+/* Prior to 5.0, clang didn't support disabling diagnostics in
+ * statement exprs.  As a result, some macros we use don't
+ * properly silence warnings. */
+#if SIMDE_DETECT_CLANG_VERSION_NOT(5,0,0) && HEDLEY_HAS_WARNING("-Wcast-qual") && HEDLEY_HAS_WARNING("-Wcast-align")
+  #define SIMDE_DIAGNOSTIC_DISABLE_BUGGY_CASTS_ _Pragma("clang diagnostic ignored \"-Wcast-qual\"") _Pragma("clang diagnostic ignored \"-Wcast-align\"")
+#elif SIMDE_DETECT_CLANG_VERSION_NOT(5,0,0) && HEDLEY_HAS_WARNING("-Wcast-qual")
+  #define SIMDE_DIAGNOSTIC_DISABLE_BUGGY_CASTS_ _Pragma("clang diagnostic ignored \"-Wcast-qual\"")
+#elif SIMDE_DETECT_CLANG_VERSION_NOT(5,0,0) && HEDLEY_HAS_WARNING("-Wcast-align")
+  #define SIMDE_DIAGNOSTIC_DISABLE_BUGGY_CASTS_ _Pragma("clang diagnostic ignored \"-Wcast-align\"")
+#else
+  #define SIMDE_DIAGNOSTIC_DISABLE_BUGGY_CASTS_
+#endif
+
 /* SLEEF triggers this a *lot* in their headers */
 #if HEDLEY_HAS_WARNING("-Wignored-qualifiers")
   #define SIMDE_DIAGNOSTIC_DISABLE_IGNORED_QUALIFIERS_ _Pragma("clang diagnostic ignored \"-Wignored-qualifiers\"")
@@ -403,6 +422,7 @@
   SIMDE_DIAGNOSTIC_DISABLE_CPP98_COMPAT_PEDANTIC_ \
   SIMDE_DIAGNOSTIC_DISABLE_CPP11_LONG_LONG_ \
   SIMDE_DIAGNOSTIC_DISABLE_BUGGY_UNUSED_BUT_SET_VARIBALE_ \
+  SIMDE_DIAGNOSTIC_DISABLE_BUGGY_CASTS_ \
   SIMDE_DIAGNOSTIC_DISABLE_BUGGY_VECTOR_CONVERSION_
 
 #endif /* !defined(SIMDE_DIAGNOSTIC_H) */