Fix stack overflow if interpreting a file full of '{' (fix #1448)

espruino · May 28, 2018 · 51380ba · 51380ba
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commit 51380ba
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diff --git a/ChangeLog b/ChangeLog
@@ -8,6 +8,7 @@
             Add for(var i of array) to iterate over elements
             Added getter and setter support
             Stop parsing blocks if not executing (fix #572)
+            Fix stack overflow if interpreting a file full of '{' (fix #1448)
 
      1v99 : Increase jslMatch error buffer size to handle "UNFINISHED TEMPLATE LITERAL" string (#1426)
             nRF5x: Make FlashWrite cope with flash writes > 4k

diff --git a/src/jsparse.c b/src/jsparse.c
@@ -2720,6 +2720,7 @@ NO_INLINE JsVar *jspeStatement() {
     return jspeExpression();
   } else if (lex->tk=='{') {
     /* A block of code */
+    if (!jspCheckStackPosition()) return 0;
     jspeBlock();
     return 0;
   } else if (lex->tk==';') {