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Bug 765733 - Don't emit singleton array initializers for empty arrays. r=bhackett

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This commit is contained in:
Jan de Mooij 2012-06-18 16:54:22 +02:00
parent 633bffe54d
commit 470afb9d91
1 changed files with 9 additions and 7 deletions
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16
js/src/frontend/Parser.cpp
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@ -6617,9 +6617,6 @@ Parser::primaryExpr(TokenKind tt, bool afterDoubleDot)
case TOK_LB: case TOK_LB:
{ {
JSBool matched;
unsigned index;
pn = ListNode::create(PNK_RB, this); pn = ListNode::create(PNK_RB, this);
if (!pn) if (!pn)
return NULL; return NULL;
@ -6629,11 +6626,16 @@ Parser::primaryExpr(TokenKind tt, bool afterDoubleDot)
#if JS_HAS_GENERATORS #if JS_HAS_GENERATORS
pn->pn_blockid = tc->sc->blockidGen; pn->pn_blockid = tc->sc->blockidGen;
#endif #endif
if (tokenStream.matchToken(TOK_RB, TSF_OPERAND)) {
matched = tokenStream.matchToken(TOK_RB, TSF_OPERAND); /*
if (!matched) { * Mark empty arrays as non-constant, since we cannot easily
* determine their type.
*/
pn->pn_xflags |= PNX_NONCONST;
} else {
bool spread = false; bool spread = false;
for (index = 0; ; index++) { unsigned index = 0;
for (; ; index++) {
if (index == StackSpace::ARGS_LENGTH_MAX) { if (index == StackSpace::ARGS_LENGTH_MAX) {
reportErrorNumber(NULL, JSREPORT_ERROR, JSMSG_ARRAY_INIT_TOO_BIG); reportErrorNumber(NULL, JSREPORT_ERROR, JSMSG_ARRAY_INIT_TOO_BIG);
return NULL; return NULL;