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Don't try to setup arguments when tracing Function.call() if we don't have at least 2 arguments (468174, r=brendan).

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This commit is contained in:
Andreas Gal 2008-12-05 16:05:21 -08:00
parent 5b66e4af69
commit 362036b89e
1 changed files with 12 additions and 10 deletions
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22
js/src/jstracer.cpp
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@ -6603,20 +6603,22 @@ TraceRecorder::record_JSOP_APPLY()
}
LIns** argv;
if (!apply) {
--argc;
argv = (LIns**)alloca(sizeof(LIns*) * argc);
for (jsuint n = 0; n < argc; ++n)
argv[n] = get(&vp[3 + n]); /* skip over the this parameter */
} else {
if (argc >= 2) {
if (argc >= 2) {
if (!apply) {
--argc;
JS_ASSERT(argc >= 0);
argv = (LIns**) alloca(sizeof(LIns*) * argc);
for (jsuint n = 0; n < argc; ++n)
argv[n] = get(&vp[3 + n]); /* skip over the this parameter */
} else {
/*
* We already established that argments is a dense array
* and we know its length and we know dslots is not NULL
* and the length is not beyond the dense array's capacity.
*/
argc = length;
argv = (LIns**)alloca(sizeof(LIns*) * argc);
JS_ASSERT(argc >= 0);
argv = (LIns**) alloca(sizeof(LIns*) * argc);
for (unsigned n = 0; n < argc; ++n) {
/* Load the value and guard on its type to unbox it. */
LIns* v_ins = lir->insLoadi(dslots_ins, n * sizeof(jsval));
@ -6637,9 +6639,9 @@ TraceRecorder::record_JSOP_APPLY()
}
argv[n] = v_ins;
}
} else {
argc = 0;
}
} else {
argc = 0;
}
/*
* We have all arguments unpacked and we are now ready to modify the