m68k/cpu32 TRAP instruction?

[Jeff Law]

On 10/4/18 6:19 AM, Josef Wolf wrote:
> Hello,
> 
> I have a project with a mc68332 controller (cpu32 based). This project worked
> great with older releases of GCC. gcc-2.95 up to gcc-4.8.1 worked great.
> 
> For various reasons, I upgraded to GCC-8.2.0 and get various crashes
> now. Closer investigations reveal, that GCC now uses the "trap #7" and
> "trap #15" instructions.
> 
> Why does gcc use those instructions? There is nothing special in the code
> which is now translated into those trap instructions. I don't use floating
> point at all, so I don't see any reason to use those instructions (and crash
> on them).
> 
> Any hints?
GCC will replace a NULL pointer dereference or division by zero with a
trap instruction.

jeff