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Use -fstack-check when compiling C code #552

briansmith opened this Issue Jun 19, 2017 · 3 comments


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briansmith commented Jun 29, 2017


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sanmai-NL commented Dec 29, 2017

-fstack-check is a no-op in Clang

See also copperhead/bugtracker#308.

@briansmith: Am I correct in believing that the current status as discussed under rust-lang/rust#43241 means CopperheadOS’ comments on Twitter are outdated wrt. Stack Clash protection for tier-1 platforms?


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thestinger commented May 15, 2018

You should pass -fstack-clash-protection to GCC. Clang doesn't support it yet.

GCC implemented -fstack-clash-protection instead of fixing -fstack-check. You don't want -fstack-check. I don't think they plan to fix it. :\

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