#3060 [z80,hc08] SIGSEGV on initilaizing global with casted pointer to struct

[Gabriel Ravier]

struct s
{
    int a;
};

struct s x;
int y = ((struct s*)&x)->a;

Compiling this with sdcc test.c -mz80 yields Caught signal 11: SIGSEGV. Tested with commit 11672.

[Philipp Klaus Krause]

I can reproduce the issue on my Debian GNU/Linux testing system. On z80, hc08, s08, r2k, z180 (oddly not on gbz80).

[Sergey Belyashov]

Is it valid construction for C? As I know, you cannot assing value of one global variable to another one, am I wrong?

[Philipp Klaus Krause]

It is not valid C. But SDCC should give a proper error message ("Initializer element is not a constant expression") rather than crash.

P.S.: I noticed that for

int i;
int j = i;

SDCC does crash, too. But at least it gives the proper error message first.

[Sebastian Riedel]

Still a SIGSEGV on 4.2.0, now also for sm83

[Philipp Klaus Krause]

Fixed in [r13852].