[Bug c++/58837] New: [4.7/4.8/4.9 Regression] [c++11] ICE using invalid condition in static_assert

[Bug c++/58837] New: [4.7/4.8/4.9 Regression] [c++11] ICE using invalid condition in static_assert

[reichelt at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58837

            Bug ID: 58837
           Summary: [4.7/4.8/4.9 Regression] [c++11] ICE using invalid
                    condition in static_assert
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: reichelt at gcc dot gnu.org

The following invalid code snippet (compiled with "-std=c++11" or "-std=c++0x"
for older compilers) triggers an ICE sine GCC 4.6.0:

==============================
struct A {};

static_assert(A::~A, "");
==============================

bug.cc:3:25: internal compiler error: tree check: expected class 'expression',
have 'constant' (ptrmem_cst) in tree_operand_check, at tree.h:3107
 static_assert(A::~A, "");
                         ^
0xd16726 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
        ../../gcc/gcc/tree.c:9352
0x502208 expr_check
        ../../gcc/gcc/tree.h:2843
0x502208 tree_operand_check
        ../../gcc/gcc/tree.h:3107
0x7778d6 tree_operand_check
        ../../gcc/gcc/tree.h:2797
0x7778d6 c_common_truthvalue_conversion(unsigned int, tree_node*)
        ../../gcc/gcc/c-family/c-common.c:4627
0x695f17 ocp_convert(tree_node*, tree_node*, int, int, int)
        ../../gcc/gcc/cp/cvt.c:785
0x6e435f finish_static_assert(tree_node*, tree_node*, unsigned int, bool)
        ../../gcc/gcc/cp/semantics.c:6744
0x651d7b cp_parser_static_assert
        ../../gcc/gcc/cp/parser.c:11671
0x648151 cp_parser_block_declaration
        ../../gcc/gcc/cp/parser.c:10931
0x66f17e cp_parser_declaration
        ../../gcc/gcc/cp/parser.c:10832
0x66de9a cp_parser_declaration_seq_opt
        ../../gcc/gcc/cp/parser.c:10718
0x66f7b6 cp_parser_translation_unit
        ../../gcc/gcc/cp/parser.c:3990
0x66f7b6 c_parse_file()
        ../../gcc/gcc/cp/parser.c:30970
0x78c623 c_common_parse_file()
        ../../gcc/gcc/c-family/c-opts.c:1046
Please submit a full bug report, [etc.]

[Bug c++/58837] [4.7/4.8/4.9 Regression] [c++11] ICE using invalid condition in static_assert

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58837

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.4

[Bug c++/58837] [4.7/4.8/4.9 Regression] [c++11] ICE using invalid condition in static_assert

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58837

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-11-19
     Ever confirmed|0                           |1

--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.

[Bug c++/58837] [4.7/4.8/4.9 Regression] [c++11] ICE using invalid condition in static_assert

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58837

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |jason at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |jason at gcc dot gnu.org

[Bug c++/58837] [4.7/4.8/4.9 Regression] [c++11] ICE using invalid condition in static_assert

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58837

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Jan 28 04:30:26 2014
New Revision: 207162

URL: http://gcc.gnu.org/viewcvs?rev=207162&root=gcc&view=rev
Log:
    PR c++/58837
    * typeck.c (cp_truthvalue_conversion): Use explicit comparison for
    FUNCTION_DECL.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/static_assert9.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/typeck.c

[Bug c++/58837] [4.7/4.8/4.9 Regression] [c++11] ICE using invalid condition in static_assert

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58837

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Jan 28 13:44:35 2014
New Revision: 207185

URL: http://gcc.gnu.org/viewcvs?rev=207185&root=gcc&view=rev
Log:
    PR c++/58837
    * typeck.c (cp_truthvalue_conversion): Use explicit comparison for
    FUNCTION_DECL.

Added:
    branches/gcc-4_8-branch/gcc/testsuite/g++.dg/cpp0x/static_assert9.C
Modified:
    branches/gcc-4_8-branch/gcc/cp/ChangeLog
    branches/gcc-4_8-branch/gcc/cp/typeck.c

[Bug c++/58837] [4.7/4.8/4.9 Regression] [c++11] ICE using invalid condition in static_assert

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58837

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|4.7.4                       |4.8.3

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Fixed for 4.8.3/4.9.  Not fixing in 4.7.