[Bug rtl-optimization/93730] [8/9/10 Regression] ICE in make_decl_rtl, at varasm.c:1375

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93730

Martin Sebor <msebor at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-invalid-code
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE
            Summary|[9/10 Regression] ICE in    |[8/9/10 Regression] ICE in
                   |make_decl_rtl, at           |make_decl_rtl, at
                   |varasm.c:1375               |varasm.c:1375

--- Comment #5 from Martin Sebor <msebor at gcc dot gnu.org> ---
Stack trace is below.  Bisecting a test case with the initializer changed to
the equivalent '{ }' points to r198746 as the first revision when GCC failed
with an ICE.  Prior to that, GCC rejected the code with:

  pr93730.C: error: variable-sized object ‘DefaultGammaTable’ may not be
initialized
     int DefaultGammaTable[3][Seed] = {{0,},};
                                            ^
pr93730.C:4:15: warning: unused variable ‘DefaultGammaTable’
[-Wunused-variable]
    4 |  unsigned int DefaultGammaTable[3][Seed] = {{0,},};
      |               ^~~~~~~~~~~~~~~~~
during RTL pass: expand
pr93730.C:4:15: internal compiler error: in make_decl_rtl, at varasm.c:1346
    4 |  unsigned int DefaultGammaTable[3][Seed] = {{0,},};
      |               ^~~~~~~~~~~~~~~~~
0x1af7fce make_decl_rtl(tree_node*)
        /src/gcc/trunk/gcc/varasm.c:1342
0x103cc40 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /src/gcc/trunk/gcc/expr.c:10085
0x10349d2 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
        /src/gcc/trunk/gcc/expr.c:8353
0x10122a3 expand_expr
        /src/gcc/trunk/gcc/expr.h:282
0x104995c expr_size(tree_node*)
        /src/gcc/trunk/gcc/expr.c:12652
0x1034657 expand_constructor
        /src/gcc/trunk/gcc/expr.c:8219
0x103e351 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /src/gcc/trunk/gcc/expr.c:10383
0x10349d2 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
        /src/gcc/trunk/gcc/expr.c:8353
0x10297d6 store_expr(tree_node*, rtx_def*, int, bool, bool)
        /src/gcc/trunk/gcc/expr.c:5747
0x10303b1 store_field
        /src/gcc/trunk/gcc/expr.c:7219
0x1027162 expand_assignment(tree_node*, tree_node*, bool)
        /src/gcc/trunk/gcc/expr.c:5369
0xe5abf4 expand_gimple_stmt_1
        /src/gcc/trunk/gcc/cfgexpand.c:3749
0xe5b00e expand_gimple_stmt
        /src/gcc/trunk/gcc/cfgexpand.c:3847
0xe6378b expand_gimple_basic_block
        /src/gcc/trunk/gcc/cfgexpand.c:5887
0xe656c2 execute
        /src/gcc/trunk/gcc/cfgexpand.c:6542
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.

*** This bug has been marked as a duplicate of bug 58646 ***