[Bug c/113992] New: in type_natural_mode

[ujszhangc at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113992

            Bug ID: 113992
           Summary: in type_natural_mode
           Product: gcc
           Version: 9.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ujszhangc at gmail dot com
  Target Milestone: ---

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/9/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:hsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Thread model: posix
gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.2) 


$ gcc test.c 

test.c: In function ‘fn1’:
test.c:1:2: internal compiler error: in type_natural_mode, at
config/i386/i386.c:7493
    1 |  typedef _Decimal32 V __attribute__ ((vector_size(16))); V fn1 (V a) {
return a; }
      |  ^~~~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-9/README.Bugs> for instructions.



This is the code in test.c.

typedef _Decimal32 V __attribute__ ((vector_size(16))); V fn1 (V a) { return a;
}