[Bug c/115162] New: ICE in OpenMP target data map directive

["Bert.Wesarg at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115162

            Bug ID: 115162
           Summary: ICE in OpenMP target data map directive
           Product: gcc
           Version: 14.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: Bert.Wesarg at googlemail dot com
  Target Milestone: ---

Created attachment 58251
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58251&action=edit
Reduced and prepocesed target_struct_map.4.c

target_struct_map.4.c from the OpenMP test suite causes an ICE in 14.1.0 with
`-foffload=disabled` . Here is a further reduced input:

gcc -v -g -fopenmp -foffload=disable -c target_struct_map.4.c -o
target_struct_map.4.o -freport-bug -fdump-debug -save-temps
Using built-in specs.
COLLECT_GCC=gcc
Target: x86_64-pc-linux-gnu
Configured with: ../configure --silent --enable-silent-rules
--prefix=/home/wesarg/opt/gcc-14.1-wo-lto --enable-languages=c,c++,fortran
--enable-threads=posix --disable-nls --enable-bootstrap --enable-plugin
--enable-default-pie --disable-werror --enable-checking --disable-multilib
--enable-__cxa_atexit --with-linker-hash-style=gnu --enable-initfini-array
--enable-gnu-indirect-function --enable-cet --silent
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.1.0 (GCC)
COLLECT_GCC_OPTIONS='-v' '-target_struct_map.4.ig' '-fopenmp' '-c' '-o'
'target_struct_map.4.o' '-freport-bug' '-fdump-debug' '-save-temps'
'-mtune=generic' '-march=x86-64' '-pthread'
 /home/wesarg/opt/gcc-14.1-wo-lto/libexec/gcc/x86_64-pc-linux-gnu/14.1.0/cc1 -E
-quiet -v -imultiarch x86_64-linux-gnu -D_REENTRANT target_struct_map.4.c
-mtune=generic -march=x86-64 -fopenmp -freport-bug -fdump-debug -g
-fworking-directory -fpch-preprocess -o target_struct_map.4.i
ignoring nonexistent directory "/usr/local/include/x86_64-linux-gnu"
ignoring nonexistent directory
"/home/wesarg/opt/gcc-14.1-wo-lto/lib/gcc/x86_64-pc-linux-gnu/14.1.0/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/wesarg/opt/gcc-14.1-wo-lto/lib/gcc/x86_64-pc-linux-gnu/14.1.0/include
 /usr/local/include
 /home/wesarg/opt/gcc-14.1-wo-lto/include

/home/wesarg/opt/gcc-14.1-wo-lto/lib/gcc/x86_64-pc-linux-gnu/14.1.0/include-fixed/x86_64-linux-gnu

/home/wesarg/opt/gcc-14.1-wo-lto/lib/gcc/x86_64-pc-linux-gnu/14.1.0/include-fixed
 /usr/include/x86_64-linux-gnu
 /usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-g' '-fopenmp' '-c' '-o' 'target_struct_map.4.o'
'-freport-bug' '-fdump-debug' '-save-temps' '-mtune=generic' '-march=x86-64'
'-pthread'
 /home/wesarg/opt/gcc-14.1-wo-lto/libexec/gcc/x86_64-pc-linux-gnu/14.1.0/cc1
-fpreprocessed target_struct_map.4.i -quiet -dumpbase target_struct_map.4.c
-dumpbase-ext .c -mtune=generic -march=x86-64 -g -version -fopenmp -freport-bug
-fdump-debug -o target_struct_map.4.s
GNU C17 (GCC) version 14.1.0 (x86_64-pc-linux-gnu)
        compiled by GNU C version 14.1.0, GMP version 6.2.0, MPFR version
4.0.2, MPC version 1.1.0, isl version none
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: caa98156640761a022c1187cabbd56e6
target_struct_map.4.c: In function 'main':
target_struct_map.4.c:41:9: internal compiler error: Segmentation fault
   41 | #pragma omp target data map(S.p[:N], S.p, S.a)
      |         ^~~
0x10023ff crash_signal
        ../../gcc/toplev.cc:319
0x7f5c91b7108f ???
       
/build/glibc-e2p3jK/glibc-2.31/signal/../sysdeps/unix/sysv/linux/x86_64/sigaction.c:0
0xcb3353 tree_check(tree_node*, char const*, int, char const*, tree_code)
        ../../gcc/tree.h:3623
0xcb3353 omp_gather_mapping_groups_1
        ../../gcc/gimplify.cc:9687
0xcc6ca2 omp_gather_mapping_groups
        ../../gcc/gimplify.cc:9714
0xcc6ca2 gimplify_adjust_omp_clauses
        ../../gcc/gimplify.cc:13837
0xcdf137 gimplify_omp_workshare
        ../../gcc/gimplify.cc:16948
0xcc10fa gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gimplify.cc:18426
0xcc3d46 gimplify_stmt(tree_node**, gimple**)
        ../../gcc/gimplify.cc:7578
0xcc279b gimplify_statement_list
        ../../gcc/gimplify.cc:2249
0xcc279b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gimplify.cc:18329
0xcc3d46 gimplify_stmt(tree_node**, gimple**)
        ../../gcc/gimplify.cc:7578
0xcc45b6 gimplify_bind_expr
        ../../gcc/gimplify.cc:1641
0xcc19d3 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gimplify.cc:18085
0xcc3d46 gimplify_stmt(tree_node**, gimple**)
        ../../gcc/gimplify.cc:7578
0xcc279b gimplify_statement_list
        ../../gcc/gimplify.cc:2249
0xcc279b gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
        ../../gcc/gimplify.cc:18329
0xcd9125 gimplify_stmt(tree_node**, gimple**)
        ../../gcc/gimplify.cc:7578
0xcd9125 gimplify_body(tree_node*, bool)
        ../../gcc/gimplify.cc:19151
0xcd9576 gimplify_function_tree(tree_node*)
        ../../gcc/gimplify.cc:19352
Please submit a full bug report, with preprocessed source.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
The bug is not reproducible, so it is likely a hardware or OS problem.

Removing either member a or converting p to a fixed length array (p[N]) avoids
the ICE