gcc-snapshot complains about null pointer dereference in do_g_f_terminal_inplace
Job #139087 failed for 634dd283:
libtool: compile: g++ -DHAVE_CONFIG_H -I. -I../.. -I../.. -I../.. -I../../buddy/src -I../../lib -I../../lib -W -Wall -Werror -Wzero-as-null-pointer-constant -Wcast-align -Wpointer-arith -Wwrite-strings -Wcast-qual -DXTSTRINGDEFINES -Wmissing-declarations -Wnoexcept -Woverloaded-virtual -Wmisleading-indentation -Wimplicit-fallthrough -Wlogical-op -Wduplicated-cond -Wnull-dereference -Wsuggest-override -Wpedantic -fvisibility=hidden -fvisibility-inlines-hidden -DSPOT_BUILD -std=c++17 -g -O -MT gfguarantee.lo -MD -MP -MF .deps/gfguarantee.Tpo -c gfguarantee.cc -fPIC -DPIC -o .libs/gfguarantee.o
[...]
In function 'spot::twa_graph_ptr spot::{anonymous}::do_g_f_terminal_inplace(spot::scc_info&, bool)':
cc1plus: error: null pointer dereference [-Werror=null-dereference]
cc1plus: all warnings being treated as errors
No line number unfortunately.
This is gcc-snapshot 1:20210508-1 from Debian.