Closed Bug 960532 Opened 11 years ago Closed 10 years ago

Implement calls in proper tail position as proper tail calls in SpiderMonkey

Categories

(Core :: JavaScript Engine, defect)

Product:
Core
Component:
JavaScript Engine
Platform:
x86_64
Linux
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED DUPLICATE of bug 723959

People

(Reporter: marc.nieper, Unassigned)

References

(Blocks 1 open bug)

Details

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:26.0) Gecko/20100101 Firefox/26.0 (Beta/Release)
Build ID: 20131206145143




Expected results:

The proposed 6th Edition of the ECMAScript Language Specification (Draft November 8, 2013) requires that ECMAScript engines implement calls in proper tail position as proper tail calls.

SpiderMonkey will have to follow this requirement to become an omplementation of ECMAScript 6.

Implementing proper tail call semantics does not change backward compatibility with any previous edition of ECMAScript or JavaScript so could already be started independently. With it, the language could be used in a truely functional style, or in a CPS, or as a good compilation target for languages with PTC semantics.
Blocks: es6
Note bug 565374, which this may well be a duplicate of.
For that matter, note bug 723959.
Status: UNCONFIRMED → RESOLVED
Closed: 10 years ago
Resolution: --- → DUPLICATE
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