RESOLVED DUPLICATE of bug 170628 169882
WebAssembly: allocate no more than 4GiB for Signaling memory 
https://bugs.webkit.org/show_bug.cgi?id=169882
Summary WebAssembly: allocate no more than 4GiB for Signaling memory
JF Bastien
Reported 2017-03-20 11:19:33 PDT
We currently virtually allocate 8GiB because odd corner cases potentially allow accesses to go above 4GiB. Those would always trap, so we need the memory to be mapped. This lowers the number of "fast" signaling memory we can allocate, it would be better to figure out which accesses could go above 4GiB, bounds check those, and all the other ones can stay entirely unchecked. Note: maybe we want 4GiB + some small redzone for small offsets.
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JF Bastien
Comment 1 2017-04-07 17:13:38 PDT
*** This bug has been marked as a duplicate of bug 170628 ***
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