[Bug 265751] clang crashes on science/py-tweedledum on i386, amd64 on 14

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 16 Aug 2022 19:25:29 UTC

John F. Carr <jfc@mit.edu> changed:

           What    |Removed                     |Added
                 CC|                            |jfc@mit.edu

--- Comment #4 from John F. Carr <jfc@mit.edu> ---
The test case produced by llvm is too large to upload here, 1.6 MB with xz -9. 
It's not clear to me how to reduce it.  The source code that causes the crash
is near the end of the file.

The error is:

Assertion failed: (!VD->mightBeUsableInConstantExpressions(Info.Ctx)), function
evaluateVarDeclInit, file
/data/Cilk/opencilk-project/clang/lib/AST/ExprConstant.cpp, line 3314.

It happens trying to generate code for

                auto& [u_j, v_j] = device_.edge(j);

in SatSwap::symmetry_break.  clang is confused about whether a value depends on
template arguments.

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