https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105019
--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
OK, I think this is the pattern:
...
$ cat gcc/testsuite/gcc.target/nvptx/alias-5.c
/* { dg-do link } */
/* { dg-do run { target runtime_ptx_isa_version_6_3 } } */
/* { dg-options "-save-temps -malias -mptx=6.3" } */
int v;
void __attribute__((noinline))
__f ()
{
v = 1;
}
void f () __attribute__ ((alias ("__f")));
void
g (void)
{
f ();
}
int
main (void)
{
if (v != 0)
__builtin_abort ();
return 0;
}
...
There's a function __f:
...
// BEGIN GLOBAL FUNCTION DEF: __f
.visible .func __f
{
.reg .u32 %r22;
mov.u32 %r22,1;
st.global.u32 [v],%r22;
ret;
}
...
with alias f:
...
// BEGIN GLOBAL FUNCTION DECL: __f
.visible .func __f;
.visible .func f;
.alias f,__f;
...
called from g:
...
// BEGIN GLOBAL FUNCTION DEF: g
.visible .func g
{
{
call f;
}
ret;
}
...
However, g is unused.
So we have:
...
PASS: gcc.target/nvptx/alias-5.c (test for excess errors)
spawn nvptx-none-run ./alias-5.exe^M
fatal : Internal error: reference to deleted section^M
nvptx-run: cuLinkComplete failed: unknown error (CUDA_ERROR_UNKNOWN, 999)^M
FAIL: gcc.target/nvptx/alias-5.c execution test
...
Calling g from main fixes the internal error.
