Fix phpGH-19169: ZEND_STATIC_ASSERT for -std=c++17

needs to define ZEND_STATIC_ASSERT to appropriate C++ static_assert
instead of the C version.

Author: psumbera

NEWS

@@ -2,6 +2,10 @@ PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? ????, PHP 8.3.25
 
+- Core:
+  . Fixed GH-19169 build issue with C++17 and ZEND_STATIC_ASSERT macro.
+    (psumbera)
+
 - Hash:
   . Fix crash on clone failure. (nielsdos)
 

Zend/zend_portability.h

@@ -761,7 +761,9 @@ extern "C++" {
 /** @deprecated */
 #define ZEND_CGG_DIAGNOSTIC_IGNORED_END ZEND_DIAGNOSTIC_IGNORED_END
 
-#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11 */
+#if defined(__cplusplus)
+# define ZEND_STATIC_ASSERT(c, m) static_assert((c), m)
+#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) /* C11 */
 # define ZEND_STATIC_ASSERT(c, m) _Static_assert((c), m)
 #else
 # define ZEND_STATIC_ASSERT(c, m)