Resizer Segfaults if setRC.tcl is not present about openroad-flow-scripts

[hongzhi2015]

I also encounter a crash at resize.tcl: repair_design.
At my site, gcd goes through the flow, ibex example always crash.

How to reproduce

Under OpenROAD-flow-scripts/flow:

$ docker run -it --rm --network=host \
  --mount type=bind,src=`pwd`/designs,dst=/OpenROAD-flow/flow/designs \
  --mount type=bind,src=`pwd`/platforms,dst=/OpenROAD-flow/flow/platforms \
  --user `id -u`:`id -g` \
  --workdir /OpenROAD-flow/flow \
  --entrypoint /bin/bash \
  openroad/flow:20201021 \
  -c "source /OpenROAD-flow/setup_env.sh && make DESIGN_CONFIG=./designs/sky130/ibex/config.mk V=1"

...
Perform port buffering...
Perform buffer insertion...
0:06.55elapsed 49%CPU 205784memKB
make: *** [results/sky130/ibex/3_3_place_resized.def] Error 11

Directory designs and platforms must be mounted, because sky130 directories are not copyed to docker image at build time.
openroad/flow:20201021 (tagged with date as image version) is the latest image build by OpenROAD-flow-scripts/build_openroad.sh

Crash location script/resize.tcl:

puts "Perform buffer insertion..."
set_max_fanout $::env(MAX_FANOUT) [current_design]
repair_design -max_wire_length $::env(MAX_WIRE_LENGTH) -buffer_cell $buffer_cell

By modifing the Makefile and running the tcl manually, a segfault is revealed:
Perform port buffering...
Perform buffer insertion...
make: *** [results/sky130/ibex/3_3_place_resized.def] Segmentation fault (core dumped)

[jjcherry56]

fixed in 08365fc resizer missing set_wire_rc seg fault
hongzhi2015: the sky130 platform is broken because it is missing setRC.tcl.
You can add the following to avoid the bug until it gets pushed to the public repo:
set_wire_rc -layer met2