File: pr22308-1.c

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gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
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/* Bug 22308: C_TYPE_FIELDS_READONLY not updated on type variants.  */
/* { dg-do compile } */
/* { dg-options "" } */

struct foo s;
volatile struct foo t;
struct foo { const int z; };

void
bar (void)
{
  t = s; /* { dg-error "assignment of read-only variable 't'" } */
}