summaryrefslogtreecommitdiffstats
path: root/js/src/jit-test/tests/basic/bug786114.js
diff options
context:
space:
mode:
authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /js/src/jit-test/tests/basic/bug786114.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
downloadUXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz
UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip
Add m-esr52 at 52.6.0
Diffstat (limited to 'js/src/jit-test/tests/basic/bug786114.js')
-rw-r--r--js/src/jit-test/tests/basic/bug786114.js32
1 files changed, 32 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/bug786114.js b/js/src/jit-test/tests/basic/bug786114.js
new file mode 100644
index 000000000..718d0426c
--- /dev/null
+++ b/js/src/jit-test/tests/basic/bug786114.js
@@ -0,0 +1,32 @@
+let expected = 'o!o!o!';
+let actual = '';
+
+// g is a function that needs an implicit |this| if called within a |with|
+// statement. If we fail to provide that implicit |this|, it will append
+// "[object global]" instead of "o!".
+let o = {
+ g: function() { actual += this.toString(); },
+ toString: function() { return "o!"; }
+}
+
+// g's presence within the |with| is detected by simple tracking of |with|s
+// during parsing.
+with (o) {
+ (function() { g(); })();
+}
+
+// The eval() defeats the tracking of |with| during parsing. Instead, g's
+// presence within the |with| is detected by looking at the scopeChain of the
+// ParseContext.
+with (o) {
+ eval("(function() { g(); })()");
+}
+
+// This is like the above case, but the knowledge of the |with| presence must
+// be inherited by the inner function. This is the case that was missed in bug
+// 786114.
+with (o) {
+ eval("(function() { (function() { g(); })(); })()");
+}
+
+assertEq(actual, expected);