[Bug middle-end/94339] New: [10 regression] ICE in tree_class_check_failed

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94339

            Bug ID: 94339
           Summary: [10 regression] ICE in tree_class_check_failed
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: clyon at gcc dot gnu.org
  Target Milestone: ---

Hi,

I've noticed this ICE while building GDB with recent GCC trunk, it appeared
between: r10-7336 and r10-7346

x86_64-unknown-linux-gnu-g++ -g -O2 -c ada-lang.ii 
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/binutils-gdb.git~gdb-8.3.1-release/gdb/ada-lang.c:
In function ‘char* ada_main_name()’:
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/binutils-gdb.git~gdb-8.3.1-release/gdb/ada-lang.c:934:386:
internal compiler error: tree check: expected class ‘constant’, have ‘unary’
(nop_expr) in warnings_for_convert_and_check, at c-family/c-warn.c:1378
  934 |       main_program_name_addr = BMSYMBOL_VALUE_ADDRESS (msym);
      |                                                                        
                                                                               
                                                                               
                                                                               
                                                                         ^
0x604b15 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/tree.c:9763
0x9f8c69 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/tree.h:3401
0x9f8c69 warnings_for_convert_and_check(unsigned int, tree_node*, tree_node*,
tree_node*)
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/c-family/c-warn.c:1378
0x74330a cp_convert_and_check(tree_node*, tree_node*, int)
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/cvt.c:676
0x6b9c2e convert_like_real
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/call.c:7844
0x6bb3bb perform_implicit_conversion_flags(tree_node*, tree_node*, int, int)
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/call.c:11867
0x6c8794 perform_implicit_conversion(tree_node*, tree_node*, int)
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/call.c:11879
0x6c8794 build_conditional_expr_1
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/call.c:5642
0x6c90be build_conditional_expr(op_location_t const&, tree_node*, tree_node*,
tree_node*, int)
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/call.c:5705
0x9406f2 build_x_conditional_expr(unsigned int, tree_node*, tree_node*,
tree_node*, int)
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/typeck.c:6972
0x82a52a cp_parser_assignment_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:9828
0x82a7fc cp_parser_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:9992
0x8356ef cp_parser_primary_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:5359
0x84ec7d cp_parser_postfix_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:7219
0x831900 cp_parser_unary_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:8525
0x829312 cp_parser_cast_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:9416
0x829ddf cp_parser_simple_cast_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:29431
0x829ddf cp_parser_binary_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:9584
0x82a460 cp_parser_assignment_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:9822
0x82a7fc cp_parser_expression
       
/home/christophe.lyon/src/Linaro/abe/abe-master/mybuild/snapshots/gcc.git~master_rev_75fb811dfaa29d60a897924b0d1629577b90eee7/gcc/cp/parser.c:9992