[Bug 1061] [dpdk v21.11.2-rc1] examples/performance-thread meson build error with gcc12.1 on fedora36

[bugzilla@dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=1061

            Bug ID: 1061
           Summary: [dpdk v21.11.2-rc1] examples/performance-thread meson
                    build error with gcc12.1 on fedora36
           Product: DPDK
           Version: 21.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: core
          Assignee: dev@dpdk.org
          Reporter: daxuex.gao@intel.com
  Target Milestone: ---

[DPDK Version]
dpdk stable v21.11.2-rc1

[OS version]
OS: Fedora Linux 36 (Server Edition)/Linux 5.17.7-300.fc36.x86_64
gcc: version 12.1.1 20220507

[Bad commit]
This is a problem on a new os.

[Test setup]
CC=gcc meson --werror -Denable_kmods=True -Dlibdir=lib -Dexamples=all
--default-library=static gcc-linux-app  
ninja -C gcc-linux-app

[Error log]
examples/performance-thread meson build error with gcc12.1 on fedora36
FAILED:
examples/dpdk-pthread_shim.p/performance-thread_pthread_shim_pthread_shim.c.o
gcc -Iexamples/dpdk-pthread_shim.p -Iexamples -I../examples
-Iexamples/performance-thread/pthread_shim
-I../examples/performance-thread/pthread_shim
-I../examples/performance-thread/common
-I../examples/performance-thread/common/arch/x86 -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/mempool -I../lib/mempool -Ilib/ring -I../lib/ring
-Ilib/net -I../lib/net -Ilib/mbuf -I../lib/mbuf -Ilib/ethdev -I../lib/ethdev
-Ilib/meter -I../lib/meter -Ilib/cmdline -I../lib/cmdline -Ilib/timer
-I../lib/timer -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall
-Winvalid-pch -Werror -O3 -include rte_config.h -Wextra -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
-march=native -Wno-format-truncation -DALLOW_EXPERIMENTAL_API -MD -MQ
examples/dpdk-pthread_shim.p/performance-thread_pthread_shim_pthread_shim.c.o
-MF
examples/dpdk-pthread_shim.p/performance-thread_pthread_shim_pthread_shim.c.o.d
-o
examples/dpdk-pthread_shim.p/performance-thread_pthread_shim_pthread_shim.c.o
-c ../examples/performance-thread/pthread_shim/pthread_shim.c
../examples/performance-thread/pthread_shim/pthread_shim.c: In function
‘pthread_setspecific’:
../examples/performance-thread/pthread_shim/pthread_shim.c:592:27: error:
‘data’ may be used uninitialized [-Werror=maybe-uninitialized]
  592 |                 int rv =  lthread_setspecific((unsigned int)key, data);
      |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../examples/performance-thread/pthread_shim/pthread_shim.c:589:56: note:
accessing argument 2 of a function declared with attribute ‘access (none, 2)’
  589 | int pthread_setspecific(pthread_key_t key, const void *data)
      |                                            ~~~~~~~~~~~~^~~~
cc1: all warnings being treated as errors [3006/3142] Compiling C object
examples/dpdk-l3fwd-thread.p/performance-thread_common_lthread_tls.c.o
[3007/3142] Compiling C object
examples/dpdk-simple_mp.p/multi_process_simple_mp_main.c.o
[3008/3142] Compiling C object
examples/dpdk-mp_client.p/multi_process_client_server_mp_mp_client_client.c.o
[3009/3142] Compiling C object
examples/dpdk-link_status_interrupt.p/link_status_interrupt_main.c.o
[3010/3142] Compiling C object
examples/dpdk-mp_server.p/multi_process_client_server_mp_mp_server_init.c.o
[3011/3142] Compiling C object
examples/dpdk-mp_server.p/multi_process_client_server_mp_mp_server_args.c.o
[3012/3142] Compiling C object
examples/dpdk-simple_mp.p/multi_process_simple_mp_mp_commands.c.o
[3013/3142] Compiling C object
drivers/libtmp_rte_event_octeontx2.a.p/event_octeontx2_otx2_worker.c.o
[3014/3142] Compiling C object
drivers/libtmp_rte_event_octeontx2.a.p/event_octeontx2_otx2_worker_dual.c.o
ninja: build stopped

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