[Bug c/105163] ICE: SSA corruption

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105163

G. Steinmetz <gscfq@t-online.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-pc-linux-gnu
           Keywords|                            |ice-on-valid-code

--- Comment #1 from G. Steinmetz <gscfq@t-online.de> ---


A corrupted variant starts to give an ICE between 20201018 and 20201108 :


$ cat z2.c
typedef struct __jmp_buf_tag { char buf[1024]; } jmp_buf[1];
extern int setjmp (jmp_buf);
extern jmp_buf *baz (void);
struct A { int b; };
void foo (struct A, int *z, int c)
{
  unsigned d = 0;
  long e;
  setjmp (*baz());
  e = 1 + ~d;
  d = 8;
  if ((!0) && !c && bar(z)) *z = 1 + e;
}