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b022fe61a7
Newer GCCs emit the following warning for opt_dff:
passes/opt/opt_dff.cc:560:17: warning: operation on ‘ff.Yosys::FfData::has_clk’ may be undefined [-Wsequence-point]
560 | ff.has_clk = ff.has_ce = ff.has_clk = false;
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Which is correct: the order of whether the read or write of has_clk
occurs first is undefined since there is no sequence point between them.
This is almost certainly just a typo/copy paste error and objectively
wrong, so just fix it.
Signed-off-by: Austin Seipp <aseipp@pobox.com>
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