[Bug c/100556] New: ICE: in gimplify_expr, at gimplify.c:14868

[Bug c/100556] New: ICE: in gimplify_expr, at gimplify.c:14868

[cnsun at uwaterloo dot ca]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100556

            Bug ID: 100556
           Summary: ICE: in gimplify_expr, at gimplify.c:14868
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: cnsun at uwaterloo dot ca
  Target Milestone: ---

$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20210511 (experimental) [master revision
:61d4686bb:71d38ec80008afdbb9a059253407d80598b765c0] (GCC)

$ cat mutant.c
f2() { return __transaction_atomic(f() == 0); }

$ gcc-trunk -O0 mutant.c
mutant.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
    1 | f2() { return __transaction_atomic(f() == 0); }
      | ^~
mutant.c: In function ‘f2’:
mutant.c:1:36: warning: implicit declaration of function ‘f’; did you mean
‘f2’? [-Wimplicit-function-declaration]
    1 | f2() { return __transaction_atomic(f() == 0); }
      |                                    ^
      |                                    f2
mutant.c:1:15: error: ‘__transaction_atomic’ without transactional memory
support enabled
    1 | f2() { return __transaction_atomic(f() == 0); }
      |               ^~~~~~~~~~~~~~~~~~~~
mutant.c:1:36: internal compiler error: in gimplify_expr, at gimplify.c:14868
    1 | f2() { return __transaction_atomic(f() == 0); }
      |                                    ^~~
0x6daa38 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:14868
0xc24eb1 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:14838
0xc2531f gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:14388
0xc358b7 gimplify_modify_expr
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:5818
0xc25118 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:14083
0xc28a4a gimplify_stmt(tree_node**, gimple**)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:6877
0xc2927e gimplify_bind_expr
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:1421
0xc254b3 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:14284
0xc28a4a gimplify_stmt(tree_node**, gimple**)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:6877
0xc27bf8 gimplify_and_add(tree_node*, gimple**)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:489
0xc27bf8 gimplify_and_return_first
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:501
0xc27bf8 gimplify_transaction
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:13703
0xc27bf8 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:14711
0xc358b7 gimplify_modify_expr
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:5818
0xc25118 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:14083
0xc28a4a gimplify_stmt(tree_node**, gimple**)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:6877
0xc341ed gimplify_and_add(tree_node*, gimple**)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:489
0xc341ed gimplify_return_expr
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:1671
0xc25dbf gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:14345
0xc28a4a gimplify_stmt(tree_node**, gimple**)
        /tmp/tmp.BriefQJ2R3-gcc-builder/gcc/gcc/gimplify.c:6877
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.

[Bug middle-end/100556] ICE: in gimplify_expr with __transaction_atomic without -ftm

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100556

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
                 CC|                            |marxin at gcc dot gnu.org
   Last reconfirmed|                            |2021-05-12

[Bug c/100556] ICE: in gimplify_expr with __transaction_atomic without -ftm

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100556

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |11.2.0
          Component|middle-end                  |c
           Keywords|error-recovery              |

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note it also ICEs with -fgnu-tm.
With the C++ front-end we get an error message with:
int f(void);
int f2() { return __transaction_atomic(f() == 0); }

--- CUT ---
<source>:2:41: error: unsafe function call 'int f()' within atomic transaction
    2 | int f2() { return __transaction_atomic(f() == 0); }
      |                                        ~^~