--- a/auto/types/sizeof
+++ b/auto/types/sizeof
@@ -25,8 +25,14 @@ $NGX_INCLUDE_UNISTD_H
 $NGX_INCLUDE_INTTYPES_H
 $NGX_INCLUDE_AUTO_CONFIG_H
 
+volatile char object_code_block[] = {
+	'\n', 'e', '4', 'V', 'A',
+	'0', 'x', ('0' + sizeof($ngx_type)),
+	'Y', '3', 'p', 'M', '\n'
+};
+
 int main(void) {
-    printf("%d", (int) sizeof($ngx_type));
+    printf("dummy use of object_code_block to avoid gc-section: %c", object_code_block[0]);
     return 0;
 }
 
@@ -40,7 +46,7 @@ eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&
 
 
 if [ -x $NGX_AUTOTEST ]; then
-    ngx_size=`$NGX_AUTOTEST`
+    ngx_size=`sed -ne 's/^e4VA0x\(.\)Y3pM$/\1/p' < $NGX_AUTOTEST`
     echo " $ngx_size bytes"
 fi