[Bug 1029] [dpdk 22.07-rc1] drivers/net/cxgbe meson build failed with cflag param optimization=1 on Ubuntu22.04 &&RHEL8.6 with gcc11.2.0&&8.5.0

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=1029

            Bug ID: 1029
           Summary: [dpdk 22.07-rc1] drivers/net/cxgbe meson build failed
                    with cflag param optimization=1 on Ubuntu22.04
                    &&RHEL8.6 with gcc11.2.0&&8.5.0
           Product: DPDK
           Version: unspecified
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: core
          Assignee: dev at dpdk.org
          Reporter: daxuex.gao at intel.com
  Target Milestone: ---

[DPDK version]
commit 1ab4156e7d57858fca1db448ac7a0792e1d527b6
Author: Thomas Monjalon <thomas at monjalon.net>
Date:   Wed Jun 8 21:43:41 2022 +0200
version: 22.07-rc1

Signed-off-by: Thomas Monjalon <thomas at monjalon.net>

[Bad commit]:
commit 6d7d651bbc157bc5a66158dca4a120df96e2b3c8
Author: Rahul Lakkireddy <rahul.lakkireddy at chelsio.com>
Date:   Tue May 17 01:04:39 2022 +0530

    net/cxgbe: read firmware configuration file from filesystem

    Add support to read firmware configuration file from
    /lib/firmware/cxgb4/ path in the filesystem. The firmware
    config file is used to enable or disable NIC features before
    firmware initialization to help retrieve better debug data to
    analyze firmware init failures. The config file can also
    be used to redistribute resources, like queues, TCAMs, etc.,
    from disabled physical functions (PFs) to main PF, before
    firmware init.

    Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy at chelsio.com>

 doc/guides/nics/cxgbe.rst               |  48 +++++
 drivers/net/cxgbe/base/t4fw_interface.h |   1 +
 drivers/net/cxgbe/cxgbe_main.c          | 329 +++++++++++++++++++++-----------
 3 files changed, 265 insertions(+), 113 deletions(-)


[OS version]:
gcc version  gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0
Ubuntu22.04/ 5.15.0-25-generic

RHEL8.6/4.18.0-372.9.1.el8.x86_64
gcc version 8.5.0

[Test Setup]:
CC=gcc meson --optimization=1 --werror -Denable_kmods=True  -Dlibdir=lib 
--default-library=static x86_64-native-linuxapp-gcc 
ninja -C x86_64-native-linuxapp-gcc -j 10

[Ubuntu20.04 log as below]
FAILED: drivers/libtmp_rte_net_cxgbe.a.p/net_cxgbe_cxgbe_main.c.o 
gcc -Idrivers/libtmp_rte_net_cxgbe.a.p -Idrivers -I../drivers
-Idrivers/net/cxgbe -I../drivers/net/cxgbe -I../drivers/net/cxgbe/base
-Ilib/ethdev -I../lib/ethdev -I. -I.. -Iconfig -I../config -Ilib/eal/include
-I../lib/eal/include -Ilib/eal/linux/include -I../lib/eal/linux/include
-Ilib/eal/x86/include -I../lib/eal/x86/include -Ilib/eal/common
-I../lib/eal/common -Ilib/eal -I../lib/eal -Ilib/kvargs -I../lib/kvargs
-Ilib/metrics -I../lib/metrics -Ilib/telemetry -I../lib/telemetry -Ilib/net
-I../lib/net -Ilib/mbuf -I../lib/mbuf -Ilib/mempool -I../lib/mempool -Ilib/ring
-I../lib/ring -Ilib/meter -I../lib/meter -Idrivers/bus/pci -I../drivers/bus/pci
-I../drivers/bus/pci/linux -Ilib/pci -I../lib/pci -Idrivers/bus/vdev
-I../drivers/bus/vdev -fdiagnostics-color=always -pipe -D_FILE_OFFSET_BITS=64
-Wall -Winvalid-pch -Wextra -Werror -O1 -include rte_config.h -Wcast-qual
-Wdeprecated -Wformat -Wformat-nonliteral -Wformat-security
-Wmissing-declarations -Wmissing-prototypes -Wnested-externs
-Wold-style-definition -Wpointer-arith -Wsign-compare -Wstrict-prototypes
-Wundef -Wwrite-strings -Wno-address-of-packed-member -Wno-packed-not-aligned
-Wno-missing-field-initializers -Wno-zero-length-bounds -D_GNU_SOURCE -fPIC
-march=native -DALLOW_EXPERIMENTAL_API -DALLOW_INTERNAL_API
-Wno-format-truncation -DRTE_LOG_DEFAULT_LOGTYPE=pmd.net.cxgbe -MD -MQ
drivers/libtmp_rte_net_cxgbe.a.p/net_cxgbe_cxgbe_main.c.o -MF
drivers/libtmp_rte_net_cxgbe.a.p/net_cxgbe_cxgbe_main.c.o.d -o
drivers/libtmp_rte_net_cxgbe.a.p/net_cxgbe_cxgbe_main.c.o -c
../drivers/net/cxgbe/cxgbe_main.c
In file included from ../drivers/net/cxgbe/base/common.h:13,
                 from ../drivers/net/cxgbe/cxgbe_main.c:37:
../drivers/net/cxgbe/cxgbe_main.c: In function ‘cxgbe_probe’:
../drivers/net/cxgbe/base/t4fw_interface.h:656:7: error: ‘maddr’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
  656 |  ((x) << S_FW_CAPS_CONFIG_CMD_MEMADDR64K_CF)
      |       ^~
../drivers/net/cxgbe/cxgbe_main.c:1111:40: note: ‘maddr’ was declared here
 1111 |  u32 finiver, finicsum, cfcsum, mtype, maddr, param, val;
      |                                        ^~~~~
In file included from ../drivers/net/cxgbe/base/common.h:13,
                 from ../drivers/net/cxgbe/cxgbe_main.c:37:
../drivers/net/cxgbe/base/t4fw_interface.h:648:7: error: ‘mtype’ may be used
uninitialized in this function [-Werror=maybe-uninitialized]
  648 |  ((x) << S_FW_CAPS_CONFIG_CMD_MEMTYPE_CF)
      |       ^~
../drivers/net/cxgbe/cxgbe_main.c:1111:33: note: ‘mtype’ was declared here
 1111 |  u32 finiver, finicsum, cfcsum, mtype, maddr, param, val;
      |                                 ^~~~~
cc1: all warnings being treated as errors
[1453/3466] Compiling C object
drivers/libtmp_rte_net_cxgbe.a.p/net_cxgbe_mps_tcam.c.o
[1454/3466] Compiling C object
drivers/libtmp_rte_net_cxgbe.a.p/net_cxgbe_sge.c.o
[1455/3466] Compiling C object
drivers/libtmp_rte_net_cxgbe.a.p/net_cxgbe_base_t4vf_hw.c.o
[1456/3466] Compiling C object
drivers/libtmp_rte_net_dpaa.a.p/net_dpaa_fmlib_fm_lib.c.o
[1457/3466] Compiling C object
drivers/libtmp_rte_net_dpaa.a.p/net_dpaa_dpaa_flow.c.o
[1458/3466] Compiling C object
drivers/libtmp_rte_net_dpaa.a.p/net_dpaa_dpaa_fmc.c.o
[1459/3466] Compiling C object
drivers/libtmp_rte_net_cxgbe.a.p/net_cxgbe_base_t4_hw.c.o
[1460/3466] Compiling C object
drivers/libtmp_rte_net_dpaa.a.p/net_dpaa_dpaa_ethdev.c.o
[1461/3466] Generating rte_net_cnxk.pmd.c with a custom command
ninja: build stopped: subcommand failed.Removing buildtools/__pycache__/
Removing x86_64-native-linuxapp-gcc/

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