Fix #1166: Correct the amount of allocated memory for non-ascii strings in ccallFunc().

1 files changed, 4 insertions, 5 deletions

diff --git a/src/preamble.js b/src/preamble.js
index 02935f8f..eb522975 100644
--- a/src/preamble.js
+++ b/src/preamble.js
@@ -299,11 +299,10 @@ function ccallFunc(func, returnType, argTypes, args) {
   function toC(value, type) {
     if (type == 'string') {
       if (value === null || value === undefined || value === 0) return 0; // null string
-      if (!stack) stack = Runtime.stackSave();
-      var ret = Runtime.stackAlloc(value.length+1);
-      writeStringToMemory(value, ret);
-      return ret;
-    } else if (type == 'array') {
+      value = intArrayFromString(value);
+      type = 'array';
+    }
+    if (type == 'array') {
       if (!stack) stack = Runtime.stackSave();
       var ret = Runtime.stackAlloc(value.length);
       writeArrayToMemory(value, ret);