Fix bug #71041 dynamic embed SAPI load error

If the library is built with ZEND_SIGNALS defined, it's unusable with an
external SAPI module because the zend_signal_startup() call is mandatory
in this case.

This bug is similar to #74149, but related to dynamic loading of PHP library.

Author: VBart

NEWS

@@ -2,6 +2,10 @@ PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 ?? ??? 2018, PHP 7.1.25
 
+- Core:
+  . Fixed bug #71041 (zend_signal_startup() needs ZEND_API).
+    (Valentin V. Bartenev)
+
 - ftp:
   . Fixed bug #77151 (ftp_close(): SSL_read on shutdown). (Remi)
 

Zend/zend_signal.c

@@ -399,7 +399,7 @@ void zend_signal_init(void) /* {{{ */
 
 /* {{{ zend_signal_startup
  * alloc zend signal globals */
-void zend_signal_startup(void)
+ZEND_API void zend_signal_startup(void)
 {
 
 #ifdef ZTS

Zend/zend_signal.h

@@ -89,7 +89,7 @@ ZEND_API void zend_signal_handler_unblock(void);
 void zend_signal_activate(void);
 void zend_signal_deactivate(void);
 BEGIN_EXTERN_C()
-void zend_signal_startup(void);
+ZEND_API void zend_signal_startup(void);
 END_EXTERN_C()
 void zend_signal_init(void);