https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102127
--- Comment #4 from Segher Boessenkool <segher at gcc dot gnu.org> --- Program received signal SIGSEGV, Segmentation fault. 0x0000000010f9b10c in ._Z19build_function_typeP9tree_nodeS0_ () (gdb) bt #0 0x0000000010f9b10c in ._Z19build_function_typeP9tree_nodeS0_ () #1 0x0000000010f9b488 in ._Z24build_function_type_listP9tree_nodez () #2 0x000000001118519c in ._Z30rs6000_init_generated_builtinsv () #3 0x000000001117dcec in ._Z20rs6000_init_builtinsv () #4 0x000000001032b88c in ._Z27c_common_nodes_and_builtinsv () #5 0x0000000010227648 in ._Z22c_init_decl_processingv () #6 0x000000001029f630 in ._Z18c_objc_common_initv () #7 0x00000000102079ac in ._ZN6toplev4mainEiPPc () #8 0x0000000010209e90 in .main () build_function_type(tree_node*, tree_node*) is called with a zero value_type and that crashes pretty much immediately.
