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Javi Merino
d84f6870fe
On Fedora 40, the build fails with:
In file included from domain_getinfo_stubs_v1.c:10:
domain_getinfo_stubs_v1.c: In function 'xsd_glue_failwith':
/usr/lib64/ocaml/caml/memory.h:275:29: error: unused variable 'caml__frame' [-Werror=unused-variable]
275 | struct caml__roots_block *caml__frame = *caml_local_roots_ptr
| ^~~~~~~~~~~
domain_getinfo_stubs_v1.c:48:9: note: in expansion of macro 'CAMLparam0'
48 | CAMLparam0();
| ^~~~~~~~~~
cc1: all warnings being treated as errors
The CAMLparam0 macro is defined in /usr/lib64/ocaml/caml/memory.h:255 as:
#define CAMLparam0() \
struct caml__roots_block** caml_local_roots_ptr = \
(DO_CHECK_CAML_STATE ? Caml_check_caml_state() : (void)0, \
&CAML_LOCAL_ROOTS); \
struct caml__roots_block *caml__frame = *caml_local_roots_ptr
We can't modify the macro. But, it turns out there's a CAMLnoreturn macro
with the sole purpose of masking this warning.
Fixes: a6576011a4 ("ocaml/libs: Implement a dynamically-loaded plugin for Xenctrl.domain_getinfo")
Signed-off-by: Javi Merino <javi.merino@cloud.com>
Acked-by: Christian Lindig <christian.lindig@cloud.com>