[Bug tree-optimization/71485] New: g++ ICE on x86_64-linux-gnu in âgimplify_exprâ

["helloqirun at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71485

            Bug ID: 71485
           Summary: g++ ICE on x86_64-linux-gnu in âgimplify_exprâ
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: helloqirun at gmail dot com
  Target Milestone: ---

The following invalid code causes an ICE when compiled with the current g++
trunk on x86_64-linux-gnu in 32-bit mode. 

It is a 7 regression.

$ g++-trunk -v
Using built-in specs.
COLLECT_GCC=g++-trunk
COLLECT_LTO_WRAPPER=/home/absozero/trunk/root-gcc/libexec/gcc/x86_64-pc-linux-gnu/7.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/absozero/trunk/root-gcc
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 7.0.0 20160608 (experimental) [trunk revision 237212] (GCC) 


$ g++-trunk -m32 abc.cc
abc.cc:1:33: error: overflow in enumeration values at âe3â
 enum { e1 = 0xffffffffffffffff, e3 } e = e3;
                                 ^~
abc.cc: In function âvoid __static_initialization_and_destruction_0(int, int)â:
abc.cc:1:38: internal compiler error: in gimplify_expr, at gimplify.c:11097
 enum { e1 = 0xffffffffffffffff, e3 } e = e3;
                                      ^
0xaeaa5f gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gcc/gimplify.c:11097
0xafb5da gimplify_modify_expr
        ../../gcc/gcc/gimplify.c:4762
0xae893a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gcc/gimplify.c:10349
0xaec9f8 gimplify_stmt(tree_node**, gimple**)
        ../../gcc/gcc/gimplify.c:5731
0xae81fa gimplify_cleanup_point_expr
        ../../gcc/gcc/gimplify.c:5507
0xae81fa gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gcc/gimplify.c:10714
0xaec9f8 gimplify_stmt(tree_node**, gimple**)
        ../../gcc/gcc/gimplify.c:5731
0xae7b63 gimplify_statement_list
        ../../gcc/gcc/gimplify.c:1549
0xae7b63 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gcc/gimplify.c:10766
0xaec9f8 gimplify_stmt(tree_node**, gimple**)
        ../../gcc/gcc/gimplify.c:5731
0xaf0c3d gimplify_cond_expr
        ../../gcc/gcc/gimplify.c:3286
0xae86d0 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gcc/gimplify.c:10305
0xaec9f8 gimplify_stmt(tree_node**, gimple**)
        ../../gcc/gcc/gimplify.c:5731
0xaf0c3d gimplify_cond_expr
        ../../gcc/gcc/gimplify.c:3286
0xae86d0 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gcc/gimplify.c:10305
0xaec9f8 gimplify_stmt(tree_node**, gimple**)
        ../../gcc/gcc/gimplify.c:5731
0xafcd84 gimplify_body(tree_node*, bool)
        ../../gcc/gcc/gimplify.c:11532
0xafd3c6 gimplify_function_tree(tree_node*)
        ../../gcc/gcc/gimplify.c:11688
0x969bf7 cgraph_node::analyze()
        ../../gcc/gcc/cgraphunit.c:625
0x96ceff analyze_functions
        ../../gcc/gcc/cgraphunit.c:1086
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.



$ cat abc.cc
enum { e1 = 0xffffffffffffffff, e3 } e = e3;