https://bugs.exim.org/show_bug.cgi?id=1749
--- Comment #25 from Petr Pisar <ppisar@???> ---
Created attachment 961
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https://bugs.exim.org/attachment.cgi?id=961&action=edit
Attempt to propagate mprotect() failure
Attached patch tries to handle failed mprotect() call so that an application
receives PCRE2_ERROR_JIT_BADOPTION on pcre2_jit_compile().
It works besides failing some tests like testinput17 because pcre2test calls
pcre2_jit_match() unconditionally for /fastjit patterns. Also RunGrepTest and
pcre2_jit_test seems unhappy with failing pcre2_jit_compile().
I think this is the best approach because it's already documented that
pcre2_jit_compile() can fail so applications should be written that way and we
could have transparent fall-back into non-JIT matching if JIT techniques are
disallowed by the operating system.
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