https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83046
Bug ID: 83046
Summary: ICE in nvptx offloading, C++ compilation of
libgomp.oacc-c-c++-common/gang-static-2.c
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: openacc
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: tschwinge at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
Target Milestone: ---
... starting with r254437 "Instrument function exit with __builtin_unreachable
in C++".
Program received signal SIGSEGV, Segmentation fault.
input_offload_tables (do_force_output=true) at
[...]/source-gcc/gcc/lto-cgraph.c:1942
1942 varpool_node::get (var_decl)->force_output = 1;
(gdb) bt
#0 input_offload_tables (do_force_output=true) at
[...]/source-gcc/gcc/lto-cgraph.c:1942
#1 0x00000000005a0927 in read_cgraph_and_symbols (fnames=<optimized out>,
nfiles=<optimized out>) at [...]/source-gcc/gcc/lto/lto.c:2863
#2 lto_main () at [...]/source-gcc/gcc/lto/lto.c:3314
#3 0x0000000000a7f63f in compile_file () at
[...]/source-gcc/gcc/toplev.c:455
#4 0x000000000056ef20 in do_compile () at
[...]/source-gcc/gcc/toplev.c:2059
#5 toplev::main (this=this@entry=0x7fffffffcfb0, argc=argc@entry=15,
argv=0x17908e0, argv@entry=0x7fffffffd0b8) at
[...]/source-gcc/gcc/toplev.c:2194
#6 0x0000000000571457 in main (argc=15, argv=0x7fffffffd0b8) at
[...]/source-gcc/gcc/main.c:39
Obviously, that test case has a "-Wreturn-type mismatch" (which is not
diagnosed for C++; see reduced PR83045), and fixing that cures this nvptx
offloading ICE.
