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Bug 696284 - Add a comment explaining why we allocate BytecodeEmitter on the heap. r=jorendorff. DONTBUILD

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This commit is contained in:
Nicholas Nethercote 2011-11-02 20:45:48 -07:00
parent 68cc56a6b0
commit 744ba05dd6
1 changed files with 5 additions and 1 deletions
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6
js/src/frontend/BytecodeEmitter.cpp
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@ -5820,7 +5820,11 @@ frontend::EmitTree(JSContext *cx, BytecodeEmitter *bce, ParseNode *pn)
JS_ASSERT_IF(pn->pn_funbox->tcflags & TCF_FUN_HEAVYWEIGHT, JS_ASSERT_IF(pn->pn_funbox->tcflags & TCF_FUN_HEAVYWEIGHT,
fun->kind() == JSFUN_INTERPRETED); fun->kind() == JSFUN_INTERPRETED);
/* Generate code for the function's body. */ /*
* Generate code for the function's body. bce2 is not allocated on the
* stack because doing so significantly reduces the maximum depth of
* nested functions we can handle. See bug 696284.
*/
BytecodeEmitter *bce2 = cx->new_<BytecodeEmitter>(bce->parser, pn->pn_pos.begin.lineno); BytecodeEmitter *bce2 = cx->new_<BytecodeEmitter>(bce->parser, pn->pn_pos.begin.lineno);
if (!bce2) { if (!bce2) {
js_ReportOutOfMemory(cx); js_ReportOutOfMemory(cx);