https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80035
Tom de Vries <vries at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tschwinge at gcc dot gnu.org
--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
> {
> .param.u32 %out_arg1;
> st.param.u32 [%out_arg1], %r31;
> call exit, (%out_arg1);
> trap; // (noreturn)
> }
At nvptx_output_call_insn, we see:
...
if (find_reg_note (insn, REG_NORETURN, NULL))
/* No return functions confuse the PTX JIT, as it doesn't realize
the flow control barrier they imply. It can seg fault if it
encounters what looks like an unexitable loop. Emit a trailing
trap, which it does grok. */
fprintf (asm_out_file, "\t\ttrap; // (noreturn)\n");
...
Replacing trap with exit or ret (or adding it after trap), makes the sigsegv go
away.
