https://bugs.php.net/bug.php?id=67512

--- php-5.6.19.orig/ext/standard/crypt.c
+++ php-5.6.19/ext/standard/crypt.c
@@ -58,6 +58,7 @@
 #include "php_lcg.h"
 #include "php_crypt.h"
 #include "php_rand.h"
+#include "php_config.h"
 
 /* The capabilities of the crypt() function is determined by the test programs
  * run by configure from aclocal.m4.  They will set PHP_STD_DES_CRYPT,
@@ -227,18 +228,20 @@
 		}
 	}
 #else
-
-# if defined(HAVE_CRYPT_R) && (defined(_REENTRANT) || defined(_THREAD_SAFE))
 	{
-#  if defined(CRYPT_R_STRUCT_CRYPT_DATA)
+#  if defined(HAVE_CRYPT_R)
+#    if defined(CRYPT_R_STRUCT_CRYPT_DATA)
 		struct crypt_data buffer;
 		memset(&buffer, 0, sizeof(buffer));
-#  elif defined(CRYPT_R_CRYPTD)
+#    elif defined(CRYPT_R_CRYPTD)
 		CRYPTD buffer;
-#  else
-#    error Data struct used by crypt_r() is unknown. Please report.
-#  endif
+#    else
+#      error Data struct used by crypt_r() is unknown. Please report.
+#    endif
 		crypt_res = crypt_r(password, salt, &buffer);
+#  else
+		crypt_res = crypt(passwrd, salt);
+#endif
 		if (!crypt_res || (salt[0] == '*' && salt[1] == '0')) {
 			return FAILURE;
 		} else {
@@ -246,7 +249,6 @@
 			return SUCCESS;
 		}
 	}
-# endif
 #endif
 }
 /* }}} */