--- gatling-0.16-origin/tryalloca.c
+++ gatling-0.16/tryalloca.c
@@ -5,7 +5,7 @@
 #include <malloc.h>
 #endif
 
-main() {
+int main() {
   char* c=alloca(23);
   return c!=NULL;
 }
--- gatling-0.16-origin/ssl.c
+++ gatling-0.16/ssl.c
@@ -12,6 +12,7 @@
 #include <sys/time.h>
 #include <sys/stat.h>
 #include "dirfd.h"
+#include "havealloca.h"
 
 static int library_inited;