Mehdi Amini aa4c76d8fb [mlir][BytecodeReader] Fix crash reading FusedLoc with empty locations (#189228) ...

FusedLoc::get(context, locs) may return UnknownLoc when locs is empty
and no metadata is provided. The bytecode reader's cBuilder used
cast<FusedLoc>() on this result, which crashes with an assertion
failure.

Fix by giving the FusedLoc DialectAttribute its own cBuilder that passes
Attribute() explicitly, causing getChecked<FusedLoc> to call the
two-parameter storage constructor directly and always produce a
FusedLoc.

Fixes #99626

Assisted-by: Claude Code

2026-04-07 12:51:54 +02:00

10 KiB

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