https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89188
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
One probably related:
$ valgrind --trace-children=yes
/home/marxin/BIG/bin/s390x/dev/shm/buildbot/install/gcc/bin/s390x-linux-gnu-gcc
ice.ii -fnon-call-exceptions -O2 -c
==22733== Memcheck, a memory error detector
==22733== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==22733== Using Valgrind-3.14.0 and LibVEX; rerun with -h for copyright info
==22733== Command:
/home/marxin/BIG/bin/s390x/dev/shm/buildbot/install/gcc/bin/s390x-linux-gnu-gcc
ice.ii -fnon-call-exceptions -O2 -c
==22733==
==22734== Memcheck, a memory error detector
==22734== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==22734== Using Valgrind-3.14.0 and LibVEX; rerun with -h for copyright info
==22734== Command:
/home/marxin/BIG/bin/s390x/dev/shm/buildbot/install/gcc/bin/../lib/gcc/s390x-linux-gnu/9.0.1/cc1plus
-fpreprocessed ice.ii -quiet -dumpbase ice.ii -m64 -mzarch -march=z900 -auxbase
ice -O2 -fnon-call-exceptions -o /tmp/ccvedZHY.s
==22734==
==22734== Invalid write of size 4
==22734== at 0x79870F: quick_push (vec.h:978)
==22734== by 0x79870F: quick_push (vec.h:1722)
==22734== by 0x79870F: inverted_post_order_compute(vec<int, va_heap,
vl_ptr>*, simple_bitmap_def**) (cfganal.c:875)
==22734== by 0x9D71F6: compute_available(simple_bitmap_def**,
simple_bitmap_def**, simple_bitmap_def**, simple_bitmap_def**) (lcm.c:515)
==22734== by 0x10846C0: compute_cprop_data (cprop.c:644)
==22734== by 0x10846C0: one_cprop_pass (cprop.c:1820)
==22734== by 0x10846C0: execute_rtl_cprop (cprop.c:1932)
==22734== by 0x10846C0: (anonymous
namespace)::pass_rtl_cprop::execute(function*) (cprop.c:1970)
==22734== by 0xA7EAD4: execute_one_pass(opt_pass*) (passes.c:2483)
==22734== by 0xA7F217: execute_pass_list_1(opt_pass*) (passes.c:2569)
==22734== by 0xA7F229: execute_pass_list_1(opt_pass*) (passes.c:2570)
==22734== by 0xA7F268: execute_pass_list(function*, opt_pass*)
(passes.c:2580)
==22734== by 0x7D8DBC: cgraph_node::expand() (cgraphunit.c:2195)
==22734== by 0x7D9C5B: expand_all_functions (cgraphunit.c:2333)
==22734== by 0x7D9C5B: symbol_table::compile() [clone .part.71]
(cgraphunit.c:2684)
==22734== by 0x7DBC7C: compile (cgraphunit.c:2596)
==22734== by 0x7DBC7C: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2862)
==22734== by 0xB3690A: compile_file() (toplev.c:481)
==22734== by 0x5AB2D3: do_compile (toplev.c:2176)
==22734== by 0x5AB2D3: toplev::main(int, char**) (toplev.c:2311)
==22734== Address 0x62a9a34 is 0 bytes after a block of size 100 alloc'd
==22734== at 0x403077F: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==22734== by 0x121257F: xrealloc (xmalloc.c:177)
==22734== by 0x798755: reserve<int> (vec.h:290)
==22734== by 0x798755: reserve (vec.h:1625)
==22734== by 0x798755: reserve_exact (vec.h:1645)
==22734== by 0x798755: inverted_post_order_compute(vec<int, va_heap,
vl_ptr>*, simple_bitmap_def**) (cfganal.c:801)
==22734== by 0x9D71F6: compute_available(simple_bitmap_def**,
simple_bitmap_def**, simple_bitmap_def**, simple_bitmap_def**) (lcm.c:515)
==22734== by 0x10846C0: compute_cprop_data (cprop.c:644)
==22734== by 0x10846C0: one_cprop_pass (cprop.c:1820)
==22734== by 0x10846C0: execute_rtl_cprop (cprop.c:1932)
==22734== by 0x10846C0: (anonymous
namespace)::pass_rtl_cprop::execute(function*) (cprop.c:1970)
==22734== by 0xA7EAD4: execute_one_pass(opt_pass*) (passes.c:2483)
==22734== by 0xA7F217: execute_pass_list_1(opt_pass*) (passes.c:2569)
==22734== by 0xA7F229: execute_pass_list_1(opt_pass*) (passes.c:2570)
==22734== by 0xA7F268: execute_pass_list(function*, opt_pass*)
(passes.c:2580)
==22734== by 0x7D8DBC: cgraph_node::expand() (cgraphunit.c:2195)
==22734== by 0x7D9C5B: expand_all_functions (cgraphunit.c:2333)
==22734== by 0x7D9C5B: symbol_table::compile() [clone .part.71]
(cgraphunit.c:2684)
==22734== by 0x7DBC7C: compile (cgraphunit.c:2596)
==22734== by 0x7DBC7C: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2862)
==22734==
==22734== Use of uninitialised value of size 8
==22734== at 0x79832B: ei_container (basic-block.h:382)
==22734== by 0x79832B: ei_edge (basic-block.h:448)
==22734== by 0x79832B: inverted_post_order_compute(vec<int, va_heap,
vl_ptr>*, simple_bitmap_def**) (cfganal.c:855)
==22734== by 0x9D71F6: compute_available(simple_bitmap_def**,
simple_bitmap_def**, simple_bitmap_def**, simple_bitmap_def**) (lcm.c:515)
==22734== by 0x10846C0: compute_cprop_data (cprop.c:644)
==22734== by 0x10846C0: one_cprop_pass (cprop.c:1820)
==22734== by 0x10846C0: execute_rtl_cprop (cprop.c:1932)
==22734== by 0x10846C0: (anonymous
namespace)::pass_rtl_cprop::execute(function*) (cprop.c:1970)
==22734== by 0xA7EAD4: execute_one_pass(opt_pass*) (passes.c:2483)
==22734== by 0xA7F217: execute_pass_list_1(opt_pass*) (passes.c:2569)
==22734== by 0xA7F229: execute_pass_list_1(opt_pass*) (passes.c:2570)
==22734== by 0xA7F268: execute_pass_list(function*, opt_pass*)
(passes.c:2580)
==22734== by 0x7D8DBC: cgraph_node::expand() (cgraphunit.c:2195)
==22734== by 0x7D9C5B: expand_all_functions (cgraphunit.c:2333)
==22734== by 0x7D9C5B: symbol_table::compile() [clone .part.71]
(cgraphunit.c:2684)
==22734== by 0x7DBC7C: compile (cgraphunit.c:2596)
==22734== by 0x7DBC7C: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2862)
==22734== by 0xB3690A: compile_file() (toplev.c:481)
==22734== by 0x5AB2D3: do_compile (toplev.c:2176)
==22734== by 0x5AB2D3: toplev::main(int, char**) (toplev.c:2311)
==22734==
==22734== Invalid read of size 8
==22734== at 0x79832B: ei_container (basic-block.h:382)
==22734== by 0x79832B: ei_edge (basic-block.h:448)
==22734== by 0x79832B: inverted_post_order_compute(vec<int, va_heap,
vl_ptr>*, simple_bitmap_def**) (cfganal.c:855)
==22734== by 0x9D71F6: compute_available(simple_bitmap_def**,
simple_bitmap_def**, simple_bitmap_def**, simple_bitmap_def**) (lcm.c:515)
==22734== by 0x10846C0: compute_cprop_data (cprop.c:644)
==22734== by 0x10846C0: one_cprop_pass (cprop.c:1820)
==22734== by 0x10846C0: execute_rtl_cprop (cprop.c:1932)
==22734== by 0x10846C0: (anonymous
namespace)::pass_rtl_cprop::execute(function*) (cprop.c:1970)
==22734== by 0xA7EAD4: execute_one_pass(opt_pass*) (passes.c:2483)
==22734== by 0xA7F217: execute_pass_list_1(opt_pass*) (passes.c:2569)
==22734== by 0xA7F229: execute_pass_list_1(opt_pass*) (passes.c:2570)
==22734== by 0xA7F268: execute_pass_list(function*, opt_pass*)
(passes.c:2580)
==22734== by 0x7D8DBC: cgraph_node::expand() (cgraphunit.c:2195)
==22734== by 0x7D9C5B: expand_all_functions (cgraphunit.c:2333)
==22734== by 0x7D9C5B: symbol_table::compile() [clone .part.71]
(cgraphunit.c:2684)
==22734== by 0x7DBC7C: compile (cgraphunit.c:2596)
==22734== by 0x7DBC7C: symbol_table::finalize_compilation_unit()
(cgraphunit.c:2862)
==22734== by 0xB3690A: compile_file() (toplev.c:481)
==22734== by 0x5AB2D3: do_compile (toplev.c:2176)
==22734== by 0x5AB2D3: toplev::main(int, char**) (toplev.c:2311)
==22734== Address 0x0 is not stack'd, malloc'd or (recently) free'd
==22734==
during RTL pass: cprop
ice.ii: In function ‘int main()’:
ice.ii:8:5: internal compiler error: Segmentation fault
8 | }
| ^
