https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94465
Bug ID: 94465
Summary: [10 Regression] fnsplit dump file ICEs
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: tnfchris at gcc dot gnu.org
Target Milestone: ---
Created attachment 48179
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=48179&action=edit
c-decl.i
The attached source ICEs when using `-c -o foo.o -Ofast -fdump-tree-fnsplit-all
-w`.
with
c-decl.c:9540: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in build_int_cst, at tree.c:1366
0x6cb76b tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc-fsf/gcc/tree.c:9790
0x1119357 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
../../gcc-fsf/gcc/tree.h:3401
0x1119357 build_int_cst(tree_node*, poly_int<2u, long>)
../../gcc-fsf/gcc/tree.c:1366
0x111a64b array_ref_low_bound(tree_node*)
../../gcc-fsf/gcc/tree.c:13429
0xed1d87 dump_generic_node(pretty_printer*, tree_node*, int, dump_flag, bool)
../../gcc-fsf/gcc/tree-pretty-print.c:2301
0xaa98e7 dump_unary_rhs
../../gcc-fsf/gcc/gimple-pretty-print.c:416
0xaa98e7 dump_gimple_assign
../../gcc-fsf/gcc/gimple-pretty-print.c:673
0xaab8d7 gimple_dump_bb_buff
../../gcc-fsf/gcc/gimple-pretty-print.c:2964
0xaab8d7 gimple_dump_bb(_IO_FILE*, basic_block_def*, int, dump_flag)
../../gcc-fsf/gcc/gimple-pretty-print.c:2988
0x8bedff dump_bb(_IO_FILE*, basic_block_def*, int, dump_flag)
../../gcc-fsf/gcc/cfghooks.c:286
0xe24ca3 dump_function_to_file(tree_node*, _IO_FILE*, dump_flag)
../../gcc-fsf/gcc/tree-cfg.c:8098
0xce70f7 execute_function_dump
../../gcc-fsf/gcc/passes.c:1750
0x1933813 diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
../../gcc-fsf/gcc/diagnostic.c:1142
0x1933be7 diagnostic_impl
../../gcc-fsf/gcc/diagnostic.c:1309
0x1934943 internal_error(char const*, ...)
../../gcc-fsf/gcc/diagnostic.c:1711
0x6cb76b tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc-fsf/gcc/tree.c:9790
0x1119357 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
../../gcc-fsf/gcc/tree.h:3401
0x1119357 build_int_cst(tree_node*, poly_int<2u, long>)
../../gcc-fsf/gcc/tree.c:1366
0x111a64b array_ref_low_bound(tree_node*)
../../gcc-fsf/gcc/tree.c:13429
0xed1d87 dump_generic_node(pretty_printer*, tree_node*, int, dump_flag, bool)
../../gcc-fsf/gcc/tree-pretty-print.c:2301
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
It looks like it's assuming the array offset is an integer constant but in this
case it's an ssa_name:
<array_ref 0xffffb7bace00
type <integer_type 0xffffb7baf5e8 int public SI
size <integer_cst 0xffffb7b9efd8 constant 32>
unit-size <integer_cst 0xffffb7bb3000 constant 4>
align:32 warn_if_not_align:0 symtab:0 alias-set 3 canonical-type
0xffffb7baf5e8 precision:32 min <integer_cst 0xffffb7b9ef90 -2147483648> max
<integer_cst 0xffffb7b9efa8 2147483647>
pointer_to_this <pointer_type 0xffffb7bb7a80>>
arg:0 <var_decl 0xffffb7ff52d0 x0
type <array_type 0xffffb79aac78 type <integer_type 0xffffb7baf5e8 int>
BLK
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0xffffb79aac78
pointer_to_this <pointer_type 0xffffb79dbc78>>
addressable used public external read BLK c-decl.i:1:8
align:32 warn_if_not_align:0 context <translation_unit_decl
0xffffb79de0f0 c-decl.i>
chain <var_decl 0xffffb7ff5360 x6 type <integer_type 0xffffb7baf5e8
int>
used public static read SI c-decl.i:9:1 size <integer_cst
0xffffb7b9efd8 32> unit-size <integer_cst 0xffffb7bb3000 4>
align:32 warn_if_not_align:0 context <translation_unit_decl
0xffffb79de0f0 c-decl.i> chain <var_decl 0xffffb7ff53f0 x7>>>
arg:1 <ssa_name 0xffffb7ba1480 type <error_mark 0xffffb7b9ed80>
nothrow
def_stmt
version:3 in-free-list>
when it's doing
#3 0x000000000111a64c in array_ref_low_bound (exp=exp@entry=0xffffb7bace00) at
../../gcc-fsf/gcc/tree.c:13429
13429 return build_int_cst (TREE_TYPE (TREE_OPERAND (exp, 1)), 0);
But I don't know what the correct fix here is.
