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Build # 6084158836

Build Type

push

github

Committed by igormunkin

Commit Message

Always exit after machine code page protection change fails.

Reported by Sergey Kaplun.

(cherry picked from commit c50232eb3)

Unfortunately, <exit> call had been missing for a long time for the case
when <mprotect> fails within <mcode_protect>. Though the patch per se is
quite trivial, the test is not at all. It exploits the fact that
<mprotect> is used only for protecting the area for mcode or callback
function pointers. Hence, if the test doesn't use FFI at all, it is
guaranteed that the only <mprotect> called in LuaJIT runtime locates in
<mcode_protect> (that is not true for Tarantool, so the test is disabled
for the integration testing routine). Furthermore, attempts to overload
<mprotect> on macOS occur to be not an easy ride either, so running the
test on macOS is disabled since this is the common part for all
platforms and everything can be checked on Linux in a much easier way.

Igor Munkin:
* added the description and the test for the problem

Part of tarantool/tarantool#8825

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