[Bug middle-end/117384] [15 regression] ICE when building gwenhywfar-5.10.1 (error: non-trivial conversion in ‘var_decl’)

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117384

--- Comment #2 from Sam James <sjames at gcc dot gnu.org> ---
```
void a() {
  char b[] = {
      144, 128, 112, 96,  80, 64, 48, 32,  1,  2,  3,  4,  5,  6,   7,   8,
      9,   24,  39,  54,  69, 84, 99, 114, 17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136};
}
void c() {
  unsigned char b[] = {
      144, 128, 112, 96,  80, 64, 48, 32,  1,  2,  3,  4,  5,  6,   7,   8,
      9,   24,  39,  54,  69, 84, 99, 114, 17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136,
      153, 136, 119, 102, 85, 68, 51, 34,  17, 34, 51, 68, 85, 102, 119, 136};
}
```