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bug 486713 - fixing flag propagation to generator expression function. r=brendan

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This commit is contained in:
Igor Bukanov 2009-04-10 20:50:47 +02:00
parent 0fa0dccf7c
commit fd755722cc
2 changed files with 10 additions and 4 deletions
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2
js/src/jsemit.h
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@ -261,7 +261,7 @@ struct JSTreeContext { /* tree context for semantic checks */
#define TCF_HAS_SHARPS 0x8000 /* source contains sharp defs or uses */
/*
* Flags to propagate from FunctionBody.
* Sticky deoptimization flags to propagate from FunctionBody.
*/
#define TCF_FUN_FLAGS (TCF_FUN_SETS_OUTER_NAME | \
TCF_FUN_USES_ARGUMENTS | \

12
js/src/jsparse.cpp
View File

@ -6405,9 +6405,15 @@ GeneratorExpr(JSParseNode *pn, JSParseNode *kid, JSTreeContext *tc)
if (!funbox)
return NULL;
gentc.flags |= TCF_FUN_IS_GENERATOR | TCF_GENEXP_LAMBDA;
if (tc->flags & TCF_HAS_SHARPS)
gentc.flags |= TCF_HAS_SHARPS;
/*
* We assume conservatively that any deoptimization flag in tc->flags
* besides TCF_FUN_PARAM_ARGUMENTS can come from the kid. So we
* propagate these flags into genfn. For code simplicity we also do
* not detect if the flags were only set in the kid and could be
* removed from tc->flags.
*/
gentc.flags |= TCF_FUN_IS_GENERATOR | TCF_GENEXP_LAMBDA |
(tc->flags & (TCF_FUN_FLAGS & ~TCF_FUN_PARAM_ARGUMENTS));
funbox->tcflags |= gentc.flags;
genfn->pn_funbox = funbox;
genfn->pn_blockid = gentc.bodyid;