Re: [boost] Lambda testcase fails when optimization enabled in gcc and llvm

Hi John, we tried with below compilers and version where it is failing g++ 8.1 and above. in clang++ 3.8.1 and 8. while it is passing on g++ 5.4. Thanks On Fri, Jul 19, 2019 at 3:51 PM Fletcher, John P via Boost < boost@lists.boost.org> wrote:

________________________________________ From: Boost [boost-bounces@lists.boost.org] on behalf of navya deepika garakapati via Boost [boost@lists.boost.org]

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Sent: 19 July 2019 10:49 To: boost@lists.boost.org Cc: navya deepika garakapati Subject: [boost] Lambda testcase fails when optimization enabled in gcc and llvm

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Hi Devs, consider below reduced testcase from boost lamda.

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The above testcases is demonstrated with g++ compiler but behavior is same on clang as well. so we thought that this may be boost testcase issue. When we replace , int d= (apply1<int>(_1 ,one) == 1); with int d= (apply1(_1 ,one) == 1);

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testcase gives correct result with or without optimization.

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Wanted to confirm here,is it valid testcase or we have to modify testcase as per above?

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Thanks, Navya

Navya

It would be helpful to know what versions of g++ and clang you are using, and also what version of C++.

Boost lambda is old code which was written for C++03 so the example may run fine on older C++ compilers.

I hope this helps.

John

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