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Bug 1364608 - Stash rval in AsyncIteratorClose.

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Tag #1287
This commit is contained in:
Gaming4JC 2019-12-14 09:58:06 -05:00 • committed by Roy Tam
commit ba1cf5608c
1 changed files with 16 additions and 2 deletions
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18
js/src/frontend/BytecodeEmitter.cpp
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@ -5365,7 +5365,14 @@ BytecodeEmitter::emitIteratorClose(IteratorKind iterKind /* = IteratorKind::Sync
checkTypeSet(JSOP_CALL);
if (iterKind == IteratorKind::Async) {
if (!emitAwait()) // ... ... RESULT
if (completionKind != CompletionKind::Throw) {
// Await clobbers rval, so save the current rval.
if (!emit1(JSOP_GETRVAL)) // ... ... RESULT RVAL
return false;
if (!emit1(JSOP_SWAP)) // ... ... RVAL RESULT
return false;
}
if (!emitAwait()) // ... ... RVAL? RESULT
return false;
}
@ -5395,8 +5402,15 @@ BytecodeEmitter::emitIteratorClose(IteratorKind iterKind /* = IteratorKind::Sync
if (!emit1(JSOP_POP)) // ... RESULT
return false;
} else {
if (!emitCheckIsObj(CheckIsObjectKind::IteratorReturn)) // ... RESULT
if (!emitCheckIsObj(CheckIsObjectKind::IteratorReturn)) // ... RVAL? RESULT
return false;
if (iterKind == IteratorKind::Async) {
if (!emit1(JSOP_SWAP)) // ... RESULT RVAL
return false;
if (!emit1(JSOP_SETRVAL)) // ... RESULT
return false;
}
}
if (!ifReturnMethodIsDefined.emitElse())