[Webkit-unassigned] [Bug 199295] sanitizeStackForVMImpl writes below stack pointer, triggers huge warning spam from valgrind

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Mar 18 17:36:30 PDT 2020


--- Comment #15 from Michael Catanzaro <mcatanzaro at gnome.org> ---
My first thought was that sanitizeStackForVMImpl could use alloca() as a workaround, because that should be basically zero-cost, right? But alloca() really just moves the stack pointer. I don't understand llint asm (or any asm) but I guess adjusting sp should probably suffice to avoid the warnings... right?

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