yosys/tests/verilog/always_comb_latch_2.ys

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read_verilog -sv <<EOF
module top;
logic x;
always_comb begin
logic y;
if (x)
x = 1;
else
y = 1;
x = y;
end
endmodule
EOF
logger -expect error "^Latch inferred for signal `\\top\.\$unnamed_block\$1\.y' from always_comb process" 1
proc