https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72828
Bug ID: 72828
Summary: ICE in clone_tree_partial when compiling with
-fdebug-types-section
Product: gcc
Version: 6.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: ott at fb dot com
Target Milestone: ---
Created attachment 39067
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39067&action=edit
Repro for GCC 6.1.0
Trying to compile HHVM with -fdebug-types-section, it fails with an ICE in
clone_tree_partial. The attached repro was obtained with creduce.
Note that while the original file ICEs with all the GCC versions I tested (4.9,
5.1, and 6.1), the attached repro only crashes with 6.1, probably the bug is
very dependent on code generation decisions (note that it doesn't crash without
--param=early-inlining-insns=200).
> g++ debug_types_ice_6.cpp -c -o /dev/null -std=c++11 -fdebug-types-section
> -O3 -g2 --param=early-inlining-insns=200 -w
debug_types_ice_6.cpp:237:1: internal compiler error: in clone_tree_partial, at
dwarf2out.c:7916
}
^
0x7d2a20 clone_tree_partial
../../gcc/dwarf2out.c:7916
0x7d2b9f copy_decls_walk
../../gcc/dwarf2out.c:7981
0x7d2aef copy_decls_walk
../../gcc/dwarf2out.c:8021
0x7d2aef copy_decls_walk
../../gcc/dwarf2out.c:8021
0x7d2aef copy_decls_walk
../../gcc/dwarf2out.c:8021
0x7d2c74 copy_decls_walk
../../gcc/dwarf2out.c:8015
0x7d2aef copy_decls_walk
../../gcc/dwarf2out.c:8021
0x7d2aef copy_decls_walk
../../gcc/dwarf2out.c:8021
0x7dceee copy_decls_for_unworthy_types
../../gcc/dwarf2out.c:8035
0x7f759a dwarf2out_finish
../../gcc/dwarf2out.c:27406
> g++ --version
g++ (GCC) 6.1.0
