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Description of problem:
Attempting to include both headers with the same ifdef ("IB_USER_IOCTL_VERBS_H") wrapper can produce a failure depending on order of include, as the files are not identical.
Problem headers:
/usr/include/rdma/ib_user_ioctl_verbs.h
/usr/include/infiniband/ib_user_ioctl_verbs.h
Version-Release number of selected component (if applicable):
/usr/include/infiniband/ib_user_ioctl_verbs.h rdma-core-devel-32.0-4.el8.x86_64
/usr/include/rdma/ib_user_ioctl_verbs.h kernel-headers-4.18.0-305.el8.x86_64
There appear to be differences in other RHEL versions, though not the same fields.
How reproducible:
Compile simple c file with different defines.
Simple c file:
====
#ifdef BAD_ORDER
# include <rdma/ib_user_ioctl_verbs.h>
# include <infiniband/ib_user_ioctl_verbs.h>
#else
# include <infiniband/ib_user_ioctl_verbs.h>
# include <rdma/ib_user_ioctl_verbs.h>
#endif
int main(int argc, char **argv) {
enum ib_uverbs_gid_type type = IB_UVERBS_GID_TYPE_IB;
(void)type;
return 0;
}
====
Steps to Reproduce:
1. gcc -DBAD_ORDER rdma.c
Actual results:
Compile this with "-DBAD_ORDER":
rdma.c: In function 'main':
rdma.c:11:7: error: variable 'type' has initializer but incomplete type
enum ib_uverbs_gid_type type = IB_UVERBS_GID_TYPE_IB;
^~~~~~~~~~~~~~~~~~
rdma.c:11:33: error: 'IB_UVERBS_GID_TYPE_IB' undeclared (first use in this function); did you mean 'IB_UVERBS_PCF_TRAP_SUP'?
enum ib_uverbs_gid_type type = IB_UVERBS_GID_TYPE_IB;
^~~~~~~~~~~~~~~~~~~~~
IB_UVERBS_PCF_TRAP_SUP
rdma.c:11:33: note: each undeclared identifier is reported only once for each function it appears in
rdma.c:11:26: error: storage size of 'type' isn't known
enum ib_uverbs_gid_type type = IB_UVERBS_GID_TYPE_IB;
^~~~
Expected results:
No error
Additional info:
These files can de indirectly included from higher-level includes like verbs.h, etc.
Comment 3RHEL Program Management
2023-07-28 07:28:13 UTC
After evaluating this issue, there are no plans to address it further or fix it in an upcoming release. Therefore, it is being closed. If plans change such that this issue will be fixed in an upcoming release, then the bug can be reopened.
Description of problem: Attempting to include both headers with the same ifdef ("IB_USER_IOCTL_VERBS_H") wrapper can produce a failure depending on order of include, as the files are not identical. Problem headers: /usr/include/rdma/ib_user_ioctl_verbs.h /usr/include/infiniband/ib_user_ioctl_verbs.h Version-Release number of selected component (if applicable): /usr/include/infiniband/ib_user_ioctl_verbs.h rdma-core-devel-32.0-4.el8.x86_64 /usr/include/rdma/ib_user_ioctl_verbs.h kernel-headers-4.18.0-305.el8.x86_64 There appear to be differences in other RHEL versions, though not the same fields. How reproducible: Compile simple c file with different defines. Simple c file: ==== #ifdef BAD_ORDER # include <rdma/ib_user_ioctl_verbs.h> # include <infiniband/ib_user_ioctl_verbs.h> #else # include <infiniband/ib_user_ioctl_verbs.h> # include <rdma/ib_user_ioctl_verbs.h> #endif int main(int argc, char **argv) { enum ib_uverbs_gid_type type = IB_UVERBS_GID_TYPE_IB; (void)type; return 0; } ==== Steps to Reproduce: 1. gcc -DBAD_ORDER rdma.c Actual results: Compile this with "-DBAD_ORDER": rdma.c: In function 'main': rdma.c:11:7: error: variable 'type' has initializer but incomplete type enum ib_uverbs_gid_type type = IB_UVERBS_GID_TYPE_IB; ^~~~~~~~~~~~~~~~~~ rdma.c:11:33: error: 'IB_UVERBS_GID_TYPE_IB' undeclared (first use in this function); did you mean 'IB_UVERBS_PCF_TRAP_SUP'? enum ib_uverbs_gid_type type = IB_UVERBS_GID_TYPE_IB; ^~~~~~~~~~~~~~~~~~~~~ IB_UVERBS_PCF_TRAP_SUP rdma.c:11:33: note: each undeclared identifier is reported only once for each function it appears in rdma.c:11:26: error: storage size of 'type' isn't known enum ib_uverbs_gid_type type = IB_UVERBS_GID_TYPE_IB; ^~~~ Expected results: No error Additional info: These files can de indirectly included from higher-level includes like verbs.h, etc.