https://bugs.exim.org/show_bug.cgi?id=2532
Bug ID: 2532
Summary: Throwing C++ exceptions out of pcre2_callout in jit
mode
Product: PCRE
Version: 10.34 (PCRE2)
Hardware: All
OS: All
Status: NEW
Severity: bug
Priority: medium
Component: Code
Assignee: ph10@???
Reporter: kkilger@???
CC: pcre-dev@???
Dear Zoltán,
We have a complicated server application running its own proprietary
programming language inside an interpreter loop. I tried to make pcre2_callout
feature available for users of my programming language. So the stack would be:
User program => Running pcre_match => Running jit code => Running pcre2_callout
=> Running new interpreter loop of proprietary language
The nested interpreter loops communicate via C++ exceptions with each other.
If, for example, there is not enough memory in the inner loop, the outer loop
must be cancelled as well. In this case it makes not much sense to proceed with
the REGEX matching.
I recognized however, that throwing C++ exception through pcre2_callout when
called from jit compiler is not possible.
Do you know the reason? Is there an easy way to fix it?
In any case the workaround would be to disable jit. It then works perfectly.
Thanks
Kilian.
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