[Bug c++/113624] New: FAIL: g++.dg/ext/dllimport4.C, ICE on windows targets

[Bug c++/113624] New: FAIL: g++.dg/ext/dllimport4.C, ICE on windows targets

[nightstrike at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113624

            Bug ID: 113624
           Summary: FAIL: g++.dg/ext/dllimport4.C, ICE on windows targets
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nightstrike at gmail dot com
  Target Milestone: ---

Created attachment 57235
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57235&action=edit
output of -freport-bug

A test from the testsuite is failing for extra errors, but it also ICE's, so
this PR is to document the ICE.  This is the reduced dllimport4.C:

void faz() {
  __attribute__((dllimport)) int faa = 1;
  faa++;
}


$ x86_64-w64-mingw32-g++ -c dllimport4.C 
dllimport4.C: In function 'void faz()':
dllimport4.C:2:34: error: variable 'faa' definition is marked dllimport
    2 |   __attribute__((dllimport)) int faa = 1;
      |                                  ^~~
dllimport4.C:4:1: internal compiler error: Segmentation fault
    4 | }
      | ^
0x138a72f crash_signal
        ../../gcc/toplev.cc:317
0xb1287b cp_genericize_r
        ../../gcc/cp/cp-gimplify.cc:1620
0x16bddbc walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
        ../../gcc/tree.cc:11420
0xdae64f c_genericize_control_stmt(tree_node**, int*, void*, tree_node*
(*)(tree_node**, int*, void*), tree_node* (*)(tree_node**, int*, tree_node*
(*)(tree_node**, int*, void*), void*, hash_set<tree_node*, false,
default_hash_traits<tree_node*> >*))
        ../../gcc/c-family/c-gimplify.cc:557
0xb12aab cp_genericize_r
        ../../gcc/cp/cp-gimplify.cc:2225
0x16bddbc walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
        ../../gcc/tree.cc:11420
0xb13e9f cp_genericize_r
        ../../gcc/cp/cp-gimplify.cc:1836
0x16bddbc walk_tree_1(tree_node**, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*,
tree_node* (*)(tree_node**, int*, tree_node* (*)(tree_node**, int*, void*),
void*, hash_set<tree_node*, false, default_hash_traits<tree_node*> >*))
        ../../gcc/tree.cc:11420
0xb12091 cp_genericize_tree
        ../../gcc/cp/cp-gimplify.cc:2258
0xb12409 cp_genericize(tree_node*)
        ../../gcc/cp/cp-gimplify.cc:2400
0xb62716 finish_function(bool)
        ../../gcc/cp/decl.cc:18800
0xc695b7 cp_parser_function_definition_after_declarator
        ../../gcc/cp/parser.cc:32699
0xc6a74e cp_parser_function_definition_from_specifiers_and_declarator
        ../../gcc/cp/parser.cc:32613
0xc6a74e cp_parser_init_declarator
        ../../gcc/cp/parser.cc:23356
0xc3dcd4 cp_parser_simple_declaration
        ../../gcc/cp/parser.cc:15890
0xc770ba cp_parser_declaration
        ../../gcc/cp/parser.cc:15563
0xc77f9a cp_parser_toplevel_declaration
        ../../gcc/cp/parser.cc:15584
0xc77f9a cp_parser_translation_unit
        ../../gcc/cp/parser.cc:5276
0xc77f9a c_parse_file()
        ../../gcc/cp/parser.cc:51174
0xdc6531 c_common_parse_file()
        ../../gcc/c-family/c-opts.cc:1301
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.


$ x86_64-w64-mingw32-g++ -v
Using built-in specs.
COLLECT_GCC=x86_64-w64-mingw32-g++
COLLECT_LTO_WRAPPER=/tmp/rt/mingw14/bin/../libexec/gcc/x86_64-w64-mingw32/14.0.1/lto-wrapper
Target: x86_64-w64-mingw32
Configured with: ../configure --disable-multilib --disable-nls
--target=x86_64-w64-mingw32 --prefix=/tmp/rt/mingw14
--with-sysroot=/tmp/rt/mingw14
--enable-languages=c,ada,c++,d,fortran,lto,m2,objc,obj-c++,rust
Thread model: win32
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.1 20240126 (experimental) (GCC)

[Bug c++/113624] FAIL: g++.dg/ext/dllimport4.C, ICE on windows targets

[nightstrike at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113624

nightstrike <nightstrike at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |11.3.0, 12.2.0, 13.0, 14.0

--- Comment #1 from nightstrike <nightstrike at gmail dot com> ---
To be clear, the ICE happens on 11, 12, 13, and 14.  I don't have other
versions handy to test.