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commit    a2c8e5cfdb9d82ae6d4bb8f37a4dc7cbeca63ec1
Author:   Peter Eisentraut <peter_e@gmx.net>
Date:     Tue Aug 30 16:00:00 2016 +0000
First released in: 11.0

    Add support for static assertions in C++
    
    This allows modules written in C++ to use or include header files that
    use StaticAssertStmt() etc.
    
    Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>


 src/include/c.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/include/c.h b/src/include/c.h
index 11fcffbae39..22535a7debb 100644
--- a/src/include/c.h
+++ b/src/include/c.h
@@ -754,6 +754,7 @@ typedef NameData *Name;
  * about a negative width for a struct bit-field.  This will not include a
  * helpful error message, but it beats not getting an error at all.
  */
+#ifndef __cplusplus
 #ifdef HAVE__STATIC_ASSERT
 #define StaticAssertStmt(condition, errmessage) \
 	do { _Static_assert(condition, errmessage); } while(0)
@@ -765,6 +766,19 @@ typedef NameData *Name;
 #define StaticAssertExpr(condition, errmessage) \
 	StaticAssertStmt(condition, errmessage)
 #endif							/* HAVE__STATIC_ASSERT */
+#else							/* C++ */
+#if defined(__cpp_static_assert) && __cpp_static_assert >= 200410
+#define StaticAssertStmt(condition, errmessage) \
+	static_assert(condition, errmessage)
+#define StaticAssertExpr(condition, errmessage) \
+	StaticAssertStmt(condition, errmessage)
+#else
+#define StaticAssertStmt(condition, errmessage) \
+	do { struct static_assert_struct { int static_assert_failure : (condition) ? 1 : -1; }; } while(0)
+#define StaticAssertExpr(condition, errmessage) \
+	({ StaticAssertStmt(condition, errmessage); })
+#endif
+#endif							/* C++ */
 
 
 /*


[parent: 0689dc3a235a]