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Bug
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Resolution: Done
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Medium
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17.01
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None
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None
On master, my system encountered several build errors. They are a result of this merge several weeks ago:
Commit: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=commitdiff;h=0bfe5d8c792abcdbcf27bfcc7b7b353fba04aee2
A Protocol Independent Hierarchical FIB (VPP-352)
No one else is see the errors, so they must be warnings on their systems.
Summary of errors:
1) Couple of "defined but not used" errors:
/vnet/vnet/mpls/interface.c
starting on line 535
static const int dpo_next_2_mpls_post_rewrite[DPO_LAST] = {
[DPO_LOAD_BALANCE] = IP_LOOKUP_NEXT_LOAD_BALANCE,
My Error Output:
/home/bmcfall/dev/2016_10_11_VPP_286_ip_doxygen/vpp/build-data/../vnet/vnet/mpls/interface.c:536:18: error: ‘dpo_next_2_mpls_post_rewrite’ defined but not used [-Werror=unused-const-variable=]
static const int dpo_next_2_mpls_post_rewrite[DPO_LAST] = {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
/vnet/vnet/dpo/lookup_dpo.c
starting on line 797
const static char* const lookup_dst_from_interface_ip4_nodes[] =
{
"lookup-ip4-dst-itf",
NULL,
};
const static char* const lookup_dst_from_interface_ip6_nodes[] =
{
"lookup-ip6-dst-itf",
NULL,
};
const static char* const lookup_dst_from_interface_mpls_nodes[] =
{
"lookup-mpls-dst-itf",
NULL,
};
const static char* const * const lookup_dst_from_interface_nodes[DPO_PROTO_NUM] =
{
[DPO_PROTO_IP4] = lookup_dst_from_interface_ip4_nodes,
[DPO_PROTO_IP6] = lookup_dst_from_interface_ip6_nodes,
[DPO_PROTO_MPLS] = lookup_dst_from_interface_mpls_nodes,
};
My Error Output:
/home/bmcfall/dev/2016_10_11_VPP_286_ip_doxygen/vpp/build-data/../vnet/vnet/dpo/lookup_dpo.c:813:34: error: ‘lookup_dst_from_interface_nodes’ defined but not used [-Werror=unused-const-variable=]
const static char* const * const lookup_dst_from_interface_nodes[DPO_PROTO_NUM] =
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
2) va_arg() parameter issue:
There are multiple instances of this. The first example is in /vnet/vnet/lisp-gpe/lisp_gpe_adjacency.c, but around 9 other files hit the same issue.
starting at line 358
lisp_gpe_adjacency_format_flags_t flags =
va_arg (args, lisp_gpe_adjacency_format_flags_t);
I looked around the code, and other calls to va_arg() de-reference the pointer to the variable 'args'. 'man va_arg()' indicates that the first parameter is of type va_list. When I did this it compiled clean.
lisp_gpe_adjacency_format_flags_t flags =
va_arg (*args, lisp_gpe_adjacency_format_flags_t);
My Error Output:
CC vnet/dpo/lookup_dpo.lo
/home/bmcfall/dev/2016_10_11_VPP_286_ip_doxygen/vpp/build-data/../vnet/vnet/lisp-gpe/lisp_gpe_adjacency.c: In function ‘format_lisp_gpe_adjacency’:
/home/bmcfall/dev/2016_10_11_VPP_286_ip_doxygen/vpp/build-data/../vnet/vnet/lisp-gpe/lisp_gpe_adjacency.c:359:5: internal compiler error: in build_va_arg, at c-family/c-common.c:5812
va_arg (args, lisp_gpe_adjacency_format_flags_t);
^~~~~~
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
Preprocessed source stored into /tmp/ccVa8tTa.out file, please attach this to your bugreport.
