Closed Bug 621654 Opened 10 years ago Closed 10 years ago
"[infer failure] Missing type" with strict-this
./js new Function("'use strict'; '' + this;")() [infer failure] Missing type at #3:00004 popped 0: 1:Global The first bad revision is: changeset: http://hg.mozilla.org/projects/jaegermonkey/rev/2d2bc8417871 user: Brian Hackett date: Tue Dec 21 18:26:09 2010 -0800 summary: [INFER] Fixes for jstests, bug 620599, part 2.
I think this is related to bug 620315 (needs a TM->JM merge). Without that fix, "this" in a strict mode function evaluates to the global object, but this is wrong. Type inference correctly infers it as 'undefined'.
This works for me with -n -a now that bug 620315 is fixed. Also, I changed things so that -a causes code to always be analyzed by type inference when it first runs, even if -m was not used (otherwise we only analyze when a script is about be compiled). To always run the interpreter and its debug-mode type checks, use '-n -a'. To always run the methodjit, use '-m -n -a'. http://hg.mozilla.org/projects/jaegermonkey/rev/86d909728bdd
Status: NEW → RESOLVED
Closed: 10 years ago
Resolution: --- → WORKSFORME
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