mirror of
https://github.com/openvswitch/ovs
synced 2025-10-23 14:57:06 +00:00
05b3c97be6
This causes the build to fail with an error message if openflow.h contains a structure whose members are not aligned in a portable way.
42 lines
938 B
Plaintext
42 lines
938 B
Plaintext
AT_BANNER([struct alignment checker unit tests])
|
|
|
|
m4_define([check_structs], [$top_srcdir/build-aux/check-structs])
|
|
m4_define([RUN_STRUCT_CHECKER],
|
|
[AT_SKIP_IF([test $HAVE_PYTHON = no])
|
|
AT_DATA([test.h], [$1
|
|
])
|
|
AT_CHECK_UNQUOTED([$PYTHON check_structs test.h], [$2], [$3], [$4])])
|
|
|
|
AT_SETUP([check struct tail padding])
|
|
RUN_STRUCT_CHECKER(
|
|
[struct xyz {
|
|
uint16_t x;
|
|
};],
|
|
[1], [],
|
|
[test.h:3: warning: struct xyz needs 2 bytes of tail padding
|
|
])
|
|
AT_CLEANUP
|
|
|
|
AT_SETUP([check struct internal alignment])
|
|
RUN_STRUCT_CHECKER(
|
|
[struct xyzzy {
|
|
uint16_t x;
|
|
uint32_t y;
|
|
};],
|
|
[1], [],
|
|
[test.h:3: warning: struct xyzzy member y is 2 bytes short of 4-byte alignment
|
|
])
|
|
AT_CLEANUP
|
|
|
|
AT_SETUP([check struct declared size])
|
|
RUN_STRUCT_CHECKER(
|
|
[struct wibble {
|
|
uint64_t z;
|
|
};
|
|
OFP_ASSERT(sizeof(struct wibble) == 12);
|
|
],
|
|
[1], [],
|
|
[test.h:4: warning: struct wibble is 8 bytes long but declared as 12
|
|
])
|
|
AT_CLEANUP
|