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Reply-To: | Brian DOT Inglis AT SystematicSw DOT ab DOT ca |
Subject: | Re: [BUG] try..catch does not work if compiled with clang 8.0 |
To: | cygwin AT cygwin DOT com |
References: | <CGME20191217093504eucas1p14cced4e1f9fcec50e44e9223d1761858 AT eucas1p1 DOT samsung DOT com> <000701d5b4bd$42c086f0$c84194d0$@samsung.com> <af3cb99f-f1cc-3bcc-9644-310c259eb222 AT SystematicSw DOT ab DOT ca> <a9a62b50-688c-5747-266a-e7bb8157adbb AT gmail DOT com> |
From: | Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca> |
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Message-ID: | <b46cefcb-144b-50f8-1f79-d2879b4e4c25@SystematicSw.ab.ca> |
Date: | Tue, 17 Dec 2019 17:05:13 -0700 |
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On 2019-12-17 13:51, Csaba Ráduly wrote: > On 17/12/2019 17:29, Brian Inglis wrote: >> On 2019-12-17 02:35, Pavel Fedin wrote: >>> I haven't upgraded for a while and today i finally decided to do so. After >>> rebuilding by project with clang++ 8.0 i found out that try...catch construct >>> doesn't work. The program just gets silently aborted. >>> Switched back to old clang++ 5.0 and it works. >>> Also an old bug which i reported some (a while) time ago persists: uncaught >>> throw does not print anything. >>> OS is Windows 10 x86/64. >> It is unlikely that try/catch does not work in the general case for clang++8, >> and your post has insufficient information to reproduce the problem. > > a.k.a. https://www.chiark.greenend.org.uk/~sgtatham/bugs.html#respect Indeed! > WJFFM >> $ cat catcher.cpp > #include <stdexcept> > #include <iostream> > > int pitcher() > { >     throw std::runtime_error{"Ouch"}; > } > > int main() > { >     try { >        return pitcher(); >     } >     catch (std::exception const&e) { >        std::cout << "Caught a " << typeid(e).name() << " - " << e.what() << '\n'; >        return 42; >     } > } > > $ g++ -v -Wall -Wpedantic -Wextra -g catcher.cpp > $ ./a.exe > Caught a St13runtime_error - Ouch The report was about clang++ 8 vs 5; tweaked source to build under 5 and 8: ... #include <typeinfo> int pitcher() { throw std::runtime_error("Ouch"); } ... but same WJFFM results: $ clang++-5.0 -g -Og -Wpedantic -Wall -Wextra -o try-catch-stc{,.cpp} $ ./try-catch-stc Caught a St13runtime_error - Ouch $ clang++-8 -g -Og -Wpedantic -Wall -Wextra -o try-catch-stc{,.cpp} $ ./try-catch-stc Caught a St13runtime_error - Ouch -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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