gcc - Question about GCC8's stack-clash-protection clashing with stack-check

Question

I have some code running well under GCC7. It enables fstack-check flag. Now when I switch to GCC8 without code change, I encounter the following error:

c1plus: error: ‘-fstack-check=’ and ‘-fstack-clash_protection’ are mutually exclusive.  Disabling ‘-fstack-check=’ [-Werror]

Clearly it wants me to remove the stack-check. However I did not enable the "stack-clash-protection" flag, why would It come into play? Is this flag enabled by default in GCC8?

question from:https://stackoverflow.com/questions/65838373/question-about-gcc8s-stack-clash-protection-clashing-with-stack-check

Answer 1

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