[PATCH] libgomp: Fix build for -fshort-enums

[Sebastian Huber <sebastian.huber@embedded-brains.de>]

Make sure that the API enums have at least the size of int.  Otherwise the
following build error may occur:

In file included from gcc/libgomp/env.c:34:
./libgomp_f.h: In function 'omp_check_defines':
./libgomp_f.h:77:8: error: size of array 'test' is negative
   77 |   char test[(28 != sizeof (omp_lock_t)
      |        ^~~~

libgomp/ChangeLog:

	* omp.h.in (omp_alloctrait_key_t):  Add __omp_alloctrait_key_t_max__
	with a value of the int type maximum.
---
 libgomp/omp.h.in | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libgomp/omp.h.in b/libgomp/omp.h.in
index bd1286c2a3f..3b1612fcb15 100644
--- a/libgomp/omp.h.in
+++ b/libgomp/omp.h.in
@@ -146,7 +146,8 @@ typedef enum omp_alloctrait_key_t
   omp_atk_fallback = 5,
   omp_atk_fb_data = 6,
   omp_atk_pinned = 7,
-  omp_atk_partition = 8
+  omp_atk_partition = 8,
+  __omp_alloctrait_key_t_max__ = __INT_MAX__
 } omp_alloctrait_key_t;
 
 typedef enum omp_alloctrait_value_t
-- 
2.35.3