Hey guys, compiling rdma-core on RHEL6.8 shows at least two sets of
warnings. Should these be fixed?
1) enum type treated as a signed int:
/root/stevo/rdma-core/libibverbs/enum_strs.c: In function
'ibv_port_state_str':
/root/stevo/rdma-core/libibverbs/enum_strs.c:63: warning: comparison of
unsigned expression < 0 is always false
/root/stevo/rdma-core/libibverbs/enum_strs.c: In function
'ibv_event_type_str':
/root/stevo/rdma-core/libibverbs/enum_strs.c:94: warning: comparison of
unsigned expression < 0 is always false
/root/stevo/rdma-core/libibverbs/enum_strs.c: In function
'ibv_wc_status_str':
/root/stevo/rdma-core/libibverbs/enum_strs.c:129: warning: comparison of
unsigned expression < 0 is always false
2) strict aliasing warnings:
/root/stevo/rdma-core/libibverbs/verbs.c: In function 'ibv_init_ah_from_wc':
/root/stevo/rdma-core/libibverbs/verbs.c:648: warning: dereferencing pointer
'sgid.163' does break strict-aliasing rules
/root/stevo/rdma-core/libibverbs/verbs.c:647: warning: dereferencing pointer
'sgid.163' does break strict-aliasing rules
/root/stevo/rdma-core/libibverbs/verbs.c:646: warning: dereferencing pointer
'sgid.163' does break strict-aliasing rules
/root/stevo/rdma-core/libibverbs/verbs.c:645: warning: dereferencing pointer
'sgid.163' does break strict-aliasing rules
/root/stevo/rdma-core/libibverbs/verbs.c:724: note: initialized from here
I avoided #2 by adding this...but is there some way to do this only for
certain compilers?
diff --git a/libibverbs/CMakeLists.txt b/libibverbs/CMakeLists.txt
index 7218783..29998f6 100644
--- a/libibverbs/CMakeLists.txt
+++ b/libibverbs/CMakeLists.txt
@@ -1,3 +1,5 @@
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${NO_STRICT_ALIASING_FLAGS}")
+
publish_headers(infiniband
arch.h
opcode.h
---
Steve.
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