fix: handle the GNU specific version of strerror_r

Close GH-11882

NEWS

@@ -8,6 +8,9 @@ PHP                                                                        NEWS
   . Fixed bug GH-10964 (Improve man page about the built-in server).
     (Alexandre Daubois)
 
+- Core:
+  . Fixed strerror_r detection at configuration time. (Kévin Dunglas)
+
 - DOM:
   . Fix DOMEntity field getter bugs. (nielsdos)
   . Fix incorrect attribute existence check in DOMElement::setAttributeNodeNS.

Zend/zend.c

@@ -1649,9 +1649,15 @@ ZEND_API ZEND_COLD ZEND_NORETURN void zend_error_noreturn(int type, const char *
 
 ZEND_API ZEND_COLD ZEND_NORETURN void zend_strerror_noreturn(int type, int errn, const char *message)
 {
-#ifdef HAVE_STR_ERROR_R
-	char buf[1024];
-	strerror_r(errn, buf, sizeof(buf));
+#ifdef HAVE_STRERROR_R
+	char b[1024];
+
+# ifdef STRERROR_R_CHAR_P
+	char *buf = strerror_r(errn, b, sizeof(b));
+# else
+	strerror_r(errn, b, sizeof(b));
+	char *buf = b;
+# endif
 #else
 	char *buf = strerror(errn);
 #endif

configure.ac

@@ -621,9 +621,11 @@ vasprintf \
 asprintf \
 nanosleep \
 memmem \
-strerror_r \
 )
 
+dnl Check for strerror_r, and if its a POSIX-compatible or a GNU specific version.
+AC_FUNC_STRERROR_R
+
 AX_FUNC_WHICH_GETHOSTBYNAME_R
 
 dnl Some systems (like OpenSolaris) do not have nanosleep in libc.