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Bug 762324: write to the current address of the bytecode, r=jorendorff

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This commit is contained in:
Benjamin Peterson 2012-06-26 13:09:41 -07:00
parent 981db43603
commit 88ab550522
1 changed files with 8 additions and 8 deletions
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16
js/src/frontend/BytecodeEmitter.cpp
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@ -5803,13 +5803,13 @@ EmitDefaults(JSContext *cx, BytecodeEmitter *bce, ParseNode *pn)
size_t tableSize = (size_t)(JUMP_OFFSET_LEN * (3 + ndefaults));
if (EmitN(cx, bce, JSOP_TABLESWITCH, tableSize) < 0)
return false;
jsbytecode *pc = bce->code(top + JUMP_OFFSET_LEN);
ptrdiff_t jumpoff = top + JUMP_OFFSET_LEN;
JS_ASSERT(nformal >= ndefaults);
uint16_t defstart = nformal - ndefaults;
SET_JUMP_OFFSET(pc, defstart);
pc += JUMP_OFFSET_LEN;
SET_JUMP_OFFSET(pc, nformal - 1);
pc += JUMP_OFFSET_LEN;
SET_JUMP_OFFSET(bce->code(jumpoff), defstart);
jumpoff += JUMP_OFFSET_LEN;
SET_JUMP_OFFSET(bce->code(jumpoff), nformal - 1);
jumpoff += JUMP_OFFSET_LEN;
// Fill body of switch, which sets defaults where needed.
unsigned i;
@ -5817,8 +5817,8 @@ EmitDefaults(JSContext *cx, BytecodeEmitter *bce, ParseNode *pn)
for (arg = pn->pn_head, i = 0; arg != pnlast; arg = arg->pn_next, i++) {
if (!(arg->pn_dflags & PND_DEFAULT))
continue;
SET_JUMP_OFFSET(pc, bce->offset() - top);
pc += JUMP_OFFSET_LEN;
SET_JUMP_OFFSET(bce->code(jumpoff), bce->offset() - top);
jumpoff += JUMP_OFFSET_LEN;
ParseNode *expr;
if (arg->isKind(PNK_NAME)) {
expr = arg->expr();
@ -5857,7 +5857,7 @@ EmitDefaults(JSContext *cx, BytecodeEmitter *bce, ParseNode *pn)
if (Emit1(cx, bce, JSOP_POP) < 0)
return false;
}
JS_ASSERT(pc == bce->code(top + tableSize));
JS_ASSERT(jumpoff == top + ptrdiff_t(tableSize));
SET_JUMP_OFFSET(bce->code(top), bce->offset() - top);
return true;
}