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Anton Likhtarov authored
Summary: Guard pages are cheap (VM only + mapping state). More than one is occasionally useful (e.g. imagine a 10k object on stack that's not used, subsequent function calls will create a frame that jumps over a single 4K guard page and we get hard to debug memory corruption instead of a clean segfault). Reviewed By: andriigrynenko Differential Revision: D15367640 fbshipit-source-id: 8f1d42a71926653929dd847eeba172c680f98589
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