Clang 16 has a new error about incompatible function types, which shows
up when building net/libfabric (on i386):
prov/hook/src/hook_domain.c:124:12: error: incompatible function pointer types passing 'ssize_t (struct fid_ep *, size_t)' (aka 'int (struct fid_ep *, unsigned int)') to parameter of type 'ssize_t (*)(struct fid_ep *, uint64_t)' (aka 'int (*)(struct fid_ep *, unsigned long long)') [-Wincompatible-function-pointer-types]
hook_credit_handler);
^~~~~~~~~~~~~~~~~~~
prov/hook/src/hook_domain.c:150:17: error: incompatible function pointer types initializing 'void (*)(struct fid_ep *, uint64_t)' (aka 'void (*)(struct fid_ep *, unsigned long long)') with an expression of type 'void (struct fid_ep *, size_t)' (aka 'void (struct fid_ep *, unsigned int)') [-Wincompatible-function-pointer-types]
.add_credits = hook_add_credits,
^~~~~~~~~~~~~~~~
prov/hook/src/hook_domain.c:152:22: error: incompatible function pointer types initializing 'void (*)(struct fid_domain *, ssize_t (*)(struct fid_ep *, uint64_t))' (aka 'void (*)(struct fid_domain *, int (*)(struct fid_ep *, unsigned long long))') with an expression of type 'void (struct fid_domain *, ssize_t (*)(struct fid_ep *, size_t))' (aka 'void (struct fid_domain *, int (*)(struct fid_ep *, unsigned int))') [-Wincompatible-function-pointer-types]
.set_send_handler = hook_set_send_handler,
^~~~~~~~~~~~~~~~~~~~~
The problem is that the 'credits' parameter used in these functions is
size_t in some cases, but uint64_t in other cases. On LP64 architectures
this does not result in any errors, but on e.g. i386 you get the above.
Make the 'credits' parameter uint64_t everywhere to fix this issue.
PR: 271537
Approved by: yuri (maintainer)
MFH: 2023Q2
26bc5ce8ba