https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105019
Bug ID: 105019
Summary: [nvptx] malias in libgomp results in "Internal error:
reference to deleted section"
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
Target Milestone: ---
As mentioned in the commit message for malias:
...
When enabling malias by default, libgomp detects alias support and
consequently libgomp.a will contains a few uses of .alias. This however
results in aforementioned "Internal error: reference to deleted section" in
many test-cases. Either there's some error with how .alias is used, or
there's a driver bug. While this issue is not resolved, we keep malias
off-by-default.
...
This needs to be investigated, and if it's a driver bug, reported to nvidia, or
otherwise fixed or worked around.
Note: the same error showed up in a test-case where the call to an alias was
inlined, and consequently the alias referenced a defined but unused function.
To observe this, disable this bit:
...
if (!cgraph_node::get (name)->referred_to_p ())
/* Prevent "Internal error: reference to deleted section". */
return;
...
in nvptx_asm_output_def_from_decls and run nvptx.exp=alias-2.c:
...
PASS: gcc.target/nvptx/alias-2.c (test for excess errors)
spawn nvptx-none-run ./alias-2.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-2.c execution test
...
So it's possible that the error somehow related to this scenario.
