https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93321
Bug ID: 93321
Summary: Unlimited recursion in prepare_block_for_update
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Keywords: compile-time-hog
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
g++-10.0.0-alpha20200110 snapshot (r280115) and g++ 9.2.0 ICE due to stack
exhaustion when compiling gcc/testsuite/g++.old-deja/g++.other/inline20.C w/
-O1 -fno-early-inlining --param max-inline-recursive-depth=9 --param
uninlined-function-insns=500000:
% ulimit -s
8192
% g++-10.0.0-alpha20200110 -O1 -fno-early-inlining --param
max-inline-recursive-depth=9 --param uninlined-function-insns=500000 -c
gcc/testsuite/g++.old-deja/g++.other/inline20.C -wrapper gdb,--args
<…>
Program received signal SIGSEGV, Segmentation fault.
0x0000000000ac006d in bitmap_set_bit (head=0x2d067d0, bit=403896)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/bitmap.c:950
950
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/bitmap.c:
No such file or directory.
(gdb) where
#0 0x0000000000ac006d in bitmap_set_bit (head=0x2d067d0, bit=403896)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/bitmap.c:950
#1 0x0000000000febf9e in mark_block_for_update (bb=0x7fffdd733888)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/tree-into-ssa.c:449
#2 prepare_block_for_update (bb=0x7fffdd733888, insert_phi_p=true)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/tree-into-ssa.c:2619
#3 0x0000000000fec4e7 in prepare_block_for_update (bb=0x7ffff53a74e0,
insert_phi_p=true)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/tree-into-ssa.c:2701
<…>
#279589 0x0000000000fec4e7 in prepare_block_for_update (bb=0x7ffff77f1270,
insert_phi_p=true)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/tree-into-ssa.c:2701
#279590 0x0000000000fee92c in update_ssa (update_flags=update_flags@entry=2048)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/tree-into-ssa.c:3395
#279591 0x0000000000fac8c0 in cleanup_tree_cfg_noloop (ssa_update_flags=2048)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/tree-cfgcleanup.c:1060
#279592 0x0000000000face6c in cleanup_tree_cfg (ssa_update_flags=<optimized
out>)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/tree-cfgcleanup.c:1165
#279593 0x0000000000e92576 in execute_function_todo (fn=0x7ffff79562c0,
data=<optimized out>)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/passes.c:1949
#279594 0x0000000000e931c8 in do_per_function (data=0x208a20, callback=0xe9235c
<execute_function_todo(function*, void*)>)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/passes.c:1638
#279595 execute_todo (flags=2132512) at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/passes.c:2037
#279596 0x0000000000e95124 in execute_one_ipa_transform_pass
(do_not_collect=false, ipa_pass=0x2631d00, node=0x7ffff79595a0)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/passes.c:2234
#279597 execute_all_ipa_transforms (do_not_collect=do_not_collect@entry=false)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/passes.c:2270
#279598 0x0000000000b37193 in cgraph_node::expand (this=0x7ffff79595a0)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/cgraphunit.c:2276
#279599 0x0000000000b382bf in expand_all_functions ()
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/cgraphunit.c:2454
#279600 symbol_table::compile (this=0x7ffff77e9100)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/cgraphunit.c:2804
#279601 0x0000000000b3a46c in symbol_table::compile (this=0x7ffff77e9100)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/cgraphunit.c:2984
#279602 symbol_table::finalize_compilation_unit (this=0x7ffff77e9100)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/cgraphunit.c:2984
#279603 0x0000000000f60061 in compile_file ()
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/toplev.c:483
#279604 0x0000000000832615 in do_compile ()
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/toplev.c:2269
#279605 toplev::main (this=this@entry=0x7fffffffd516, argc=<optimized out>,
argc@entry=17, argv=<optimized out>,
argv@entry=0x7fffffffd618) at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/toplev.c:2408
#279606 0x00000000008351fe in main (argc=17, argv=0x7fffffffd618)
at
/var/tmp/portage/sys-devel/gcc-10.0.0_alpha20200110/work/gcc-10-20200110/gcc/main.c:39
(not sure if the parameters are valid, though.)
