https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83987
Bug ID: 83987
Summary: [6/7/8 Regression] ICE with OpenMP, sanitizer and
virtual bases
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code, lto, openmp
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: reichelt at gcc dot gnu.org
CC: marxin at gcc dot gnu.org
Target Milestone: ---
The following valid code snippet triggers an ICE since GCC 6.1.0
when compiled with "-fsanitize=undefined -flto -fopenmp":
===========================================
struct A
{
int i;
};
struct B : virtual A
{
void foo();
};
void B::foo()
{
#pragma omp sections lastprivate (i)
{
i = 0;
}
}
===========================================
bug.cc: In member function 'B::foo()':
bug.cc:21:1: internal compiler error: tree code 'call_expr' is not supported in
LTO streams
}
^
0xd7d163 lto_write_tree
../../gcc/gcc/lto-streamer-out.c:442
0xd7d163 lto_output_tree_1
../../gcc/gcc/lto-streamer-out.c:483
0xd7d163 DFS::DFS(output_block*, tree_node*, bool, bool, bool)
../../gcc/gcc/lto-streamer-out.c:670
0xd7e06d lto_output_tree(output_block*, tree_node*, bool, bool)
../../gcc/gcc/lto-streamer-out.c:1642
0xd7bc51 output_struct_function_base
../../gcc/gcc/lto-streamer-out.c:2019
0xd7bc51 output_function
../../gcc/gcc/lto-streamer-out.c:2124
0xd7bc51 lto_output()
../../gcc/gcc/lto-streamer-out.c:2419
0xdd9c3e write_lto
../../gcc/gcc/passes.c:2610
0xddd32e ipa_write_summaries_1
../../gcc/gcc/passes.c:2674
0xddd32e ipa_write_summaries()
../../gcc/gcc/passes.c:2734
0xae5bc2 ipa_passes
../../gcc/gcc/cgraphunit.c:2468
0xae5bc2 symbol_table::compile()
../../gcc/gcc/cgraphunit.c:2558
0xae7be9 symbol_table::compile()
../../gcc/gcc/cgraphunit.c:2537
0xae7be9 symbol_table::finalize_compilation_unit()
../../gcc/gcc/cgraphunit.c:2717
Please submit a full bug report, [etc.]
Before GCC 6, the code was rejected.
