https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88484
Bug ID: 88484
Summary: OpenACC wait directive without wait argument but with
async clause
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Keywords: openacc
Severity: normal
Priority: P3
Component: libgomp
Assignee: tschwinge at gcc dot gnu.org
Reporter: tschwinge at gcc dot gnu.org
CC: cltang at gcc dot gnu.org, jakub at gcc dot gnu.org
Target Milestone: ---
As made evident by this small patch:
--- libgomp/oacc-parallel.c
+++ libgomp/oacc-parallel.c
@@ -632,6 +632,8 @@ GOACC_wait (int async, int num_waits, ...)
acc_wait_all ();
else if (async == acc_async_noval)
goacc_thread ()->dev->openacc.async_wait_all_async_func
(acc_async_noval);
+ else
+ gomp_fatal ("GOACC_wait: unhandled async: %d", async);
}
int
..., we don't correctly handle "#pragma acc wait async (a)" for "a >= 0",
handling as a no-op whereas it should enqueue the appropriate wait operations
on "async (a)".
The fix might be as simple as calling "acc_wait_all_async (async)" generally,
not just for "async == acc_async_noval". I'll verify.
