segfault in proc_dlatch when latch is driven by conflicting drivers

[gadfort]

Version

Yosys 0.46 (git sha1 e97731b, g++ 11.4.0-1ubuntu1~22.04 -fPIC -O3)

On which OS did this happen?

Linux

Reproduction Steps

yosys_segfault.tar.gz

tar xvf yosys_segfault.tar.gz
cd yosys_segfault
yosys -C run.ys

Expected Behavior

proc_dlatch fails gracefully and no segfault is generated.

Actual Behavior

2.2.7. Executing PROC_MUX pass (convert decision trees to multiplexers).
Creating decoders for process `\issue.$proc$issue.v:5$2'.
     1/3: $1\io[2:0] [2]
     2/3: $1\io[2:0] [0]
     3/3: $1\io[2:0] [1]

2.2.8. Executing PROC_DLATCH pass (convert process syncs to latches).
Segmentation fault (core dumped)