[DPDK/core Bug 1964] [dpdk26.07-rc2] DPDK build failed with EXTRA_CFLAGS='-O1' on Ubuntu26.04

[bugzilla at dpdk.org]

http://bugs.dpdk.org/show_bug.cgi?id=1964

            Bug ID: 1964
           Summary: [dpdk26.07-rc2] DPDK build failed with
                    EXTRA_CFLAGS='-O1' on Ubuntu26.04
           Product: DPDK
           Version: 26.07
          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: ---

[Environment]
DPDK version: 
commit f77bc8767a952cf833fc9c85d6b5b8d77d39a5da (HEAD -> main, tag: v26.07-rc2,
origin/main, origin/HEAD)
OS: Ubuntu26.04/7.0.0-14-generic
Compiler: gcc (Ubuntu 15.2.0-16ubuntu1) 15.2.0

[Test Setup]
# build cmd: 
CC=gcc meson --optimization=1 --werror  -Dlibdir=lib  --default-library=static
x86_64-native-linuxapp-gcc 
ninja -C x86_64-native-linuxapp-gcc

[Output]
# ninja -C x86_64-native-linuxapp-gcc
ninja: Entering directory `x86_64-native-linuxapp-gcc'
[1683/3722] Compiling C object
drivers/libtmp_rte_net_hinic3.a.p/net_hinic3_hinic3_fdir.c.o
FAILED: drivers/libtmp_rte_net_hinic3.a.p/net_hinic3_hinic3_fdir.c.o
gcc -Idrivers/libtmp_rte_net_hinic3.a.p -Idrivers -I../drivers
-Idrivers/net/hinic3 -I../drivers/net/hinic3 -Idrivers/net/hinic3/base
-I../drivers/net/hinic3/base -Idrivers/net/hinic3/htn_adapt
-I../drivers/net/hinic3/htn_adapt -Idrivers/net/hinic3/stn_adapt
-I../drivers/net/hinic3/stn_adapt -Ilib/ethdev -I../lib/ethdev -Ilib/eal/common
-I../lib/eal/common -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 -I../kernel/linux -Ilib/eal
-I../lib/eal -Ilib/kvargs -I../lib/kvargs -Ilib/log -I../lib/log -Ilib/metrics
-I../lib/metrics -Ilib/telemetry -I../lib/telemetry -Ilib/argparse
-I../lib/argparse -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 -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra
-Werror -std=c11 -O1 -include rte_config.h -Wvla -Wcast-qual -Wdeprecated
-Wformat -Wformat-nonliteral -Wformat-security -Wmissing-declarations
-Wmissing-prototypes -Wnested-externs -Wold-style-definition -Wpointer-arith
-Wshadow -Wsign-compare -Wstrict-prototypes -Wundef -Wwrite-strings
-Wno-packed-not-aligned -Wno-missing-field-initializers
-fzero-init-padding-bits=all -D_GNU_SOURCE -fPIC -march=native -mrtm
-DALLOW_EXPERIMENTAL_API -DALLOW_INTERNAL_API -Wno-format-truncation
-Wno-address-of-packed-member -DHW_CONVERT_ENDIAN -DRTE_COMPONENT_CLASS=pmd_net
-DRTE_COMPONENT_NAME=hinic3 -DRTE_LOG_DEFAULT_LOGTYPE=pmd.net.hinic3 -MD -MQ
drivers/libtmp_rte_net_hinic3.a.p/net_hinic3_hinic3_fdir.c.o -MF
drivers/libtmp_rte_net_hinic3.a.p/net_hinic3_hinic3_fdir.c.o.d -o
drivers/libtmp_rte_net_hinic3.a.p/net_hinic3_hinic3_fdir.c.o -c
../drivers/net/hinic3/hinic3_fdir.c
../drivers/net/hinic3/hinic3_fdir.c: In function
‘hinic3_enable_rxq_fdir_filter’:
../drivers/net/hinic3/hinic3_fdir.c:1278:13: error: ‘ret’ may be used
uninitialized [-Werror=maybe-uninitialized]
 1278 |         int ret;
      |             ^~~
cc1: all warnings being treated as errors
[1694/3722] Compiling C object
drivers/libtmp_rte_net_hinic3.a.p/net_hinic3_hinic3_ethdev.c.o
ninja: build stopped: subcommand failed.

[Expected Result]
Build Passed

[Regression]
Is this issue a regression: (Y/N)N

[First bad commit]
commit 1c963e5976a812771a4f3329e340ff9f9bef4406 (HEAD)
Author: Stephen Hemminger <stephen at networkplumber.org>
Date:   Tue Jun 9 08:53:30 2026 -0700

    tailq: fix name truncation

    The tailq name is defined as 32 bytes, but name would be
    silently truncated at 31 bytes. The function strlcpy() size
    already accounts for the NUL character at the end.

    Bugzilla ID: 1954
    Fixes: f9acaf84e923 ("replace snprintf with strlcpy without adding extra
include")
    Cc: stable at dpdk.org

    Signed-off-by: Stephen Hemminger <stephen at networkplumber.org>
    Acked-by: Chengwen Feng <fengchengwen at huawei.com>

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