DPDK build failed with clang21.1.8 on Fedora43

http://bugs.dpdk.org/show_bug.cgi?id=1937

            Bug ID: 1937
           Summary: [dpdk23.11.7-rc1] DPDK build failed with clang21.1.8
                    on Fedora43
           Product: DPDK
           Version: 23.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: core
          Assignee: [email protected]
          Reporter: [email protected]

Target Milestone: ---

[Environment]
DPDK version:
commit f919fadc148d11f2ef68def4b7638503323515b2 (HEAD, tag: v23.11.7-rc1, origin/23.11)

Author: Shani Peretz <[email protected]>
Date:   Tue Apr 21 09:24:45 2026 +0300

version: 23.11.7-rc1

OS: Fedora43-64/6.17.1-300.fc43.x86_64
Compiler: clang 21.1.8 (Fedora 21.1.8-4.fc43)

[Test Setup]

# build cmd: 
CC=clang meson --werror -Dlibdir=lib -Dexamples=all --default-library=static
x86_64-native-linuxapp-clang

ninja -C x86_64-native-linuxapp-clang/

[Output]
FAILED: app/dpdk-test.p/test_test_event_dma_adapter.c.o
clang -Iapp/dpdk-test.p -Iapp -I../app -Ilib/cmdline -I../lib/cmdline -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/log -I../lib/log -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 -Idrivers/net/ring -I../drivers/net/ring -Ilib/ethdev -I../lib/ethdev -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 -Ilib/acl -I../lib/acl -Ilib/hash -I../lib/hash -Ilib/rcu -I../lib/rcu -Ilib/bitratestats -I../lib/bitratestats -Ilib/bpf -I../lib/bpf -Ilib/compressdev -I../lib/compressdev -Ilib/cryptodev -I../lib/cryptodev -Ilib/security -I../lib/security -Ilib/dispatcher -I../lib/dispatcher -Ilib/eventdev -I../lib/eventdev -Ilib/timer -I../lib/timer -Ilib/dmadev -I../lib/dmadev -Ilib/distributor -I../lib/distributor -Ilib/efd -I../lib/efd -Ilib/fib -I../lib/fib -Ilib/rib -I../lib/rib -Ilib/table -I../lib/table -Ilib/port -I../lib/port -Ilib/sched -I../lib/sched -Ilib/ip_frag -I../lib/ip_frag -Ilib/lpm -I../lib/lpm -Ilib/graph -I../lib/graph -Ilib/pcapng -I../lib/pcapng -Ilib/ipsec -I../lib/ipsec -Ilib/latencystats -I../lib/latencystats -Idrivers/net/bonding -I../drivers/net/bonding -Idrivers/net/null -I../drivers/net/null -Ilib/member -I../lib/member -Ilib/pdcp -I../lib/pdcp -Ilib/reorder -I../lib/reorder -Ilib/pdump -I../lib/pdump -Ilib/power -I../lib/power -Ilib/rawdev -I../lib/rawdev -Ilib/stack -I../lib/stack -Ilib/pipeline -I../lib/pipeline -Idrivers/crypto/scheduler -I../drivers/crypto/scheduler -fdiagnostics-color=always -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -Wextra -Werror -std=c11 -O3 -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-missing-field-initializers -D_GNU_SOURCE -DWITH_GZFILEOP -march=native -mrtm -DALLOW_EXPERIMENTAL_API -Wno-format-truncation -fno-strict-aliasing -DALLOW_INTERNAL_API -MD -MQ app/dpdk-test.p/test_test_event_dma_adapter.c.o -MF app/dpdk-test.p/test_test_event_dma_adapter.c.o.d -o app/dpdk-test.p/test_test_event_dma_adapter.c.o -c ../app/test/test_event_dma_adapter.c ../app/test/test_event_dma_adapter.c:594:32: error: variable 'event' is uninitialized when passed as a const pointer argument here [-Werror,-Wuninitialized-const-pointer]
594 |

TEST_DMA_VCHAN_ID, &event);
      |                                                                        
        ^~~~~

1 error generated.
[2526/2823] Compiling C object app/dpdk-test.p/test_test_efd_perf.c.o [2527/2823] Compiling C object app/dpdk-test.p/test_test_ethdev_link.c.o [2528/2823] Compiling C object app/dpdk-test.p/test_test_distributor.c.o [2529/2823] Compiling C object app/dpdk-test.p/test_test_event_crypto_adapter.c.o [2530/2823] Compiling C object app/dpdk-test.p/test_test_event_eth_tx_adapter.c.o [2531/2823] Compiling C object app/dpdk-test.p/test_test_event_ring.c.o [2532/2823] Compiling C object app/dpdk-test.p/test_test_event_eth_rx_adapter.c.o [2533/2823] Compiling C object app/dpdk-test.p/test_test_cryptodev.c.o [2534/2823] Compiling C object app/dpdk-test.p/test_test_event_timer_adapter.c.o

[Expected Result]
Build Passed

[Regression]
Is this issue a regression: (Y/N)N
This is a new issue discovered on Fedora 43 OS; it was not found on Fedora 42 OS.

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http://bugs.dpdk.org/show_bug.cgi?id=1937

gaodaxue ([email protected]) changed:

What |Removed |Added
----------------------------------------------------------------------------

         Resolution|---                         |FIXED
             Status|IN_PROGRESS                 |RESOLVED

--- Comment #3 from gaodaxue ([email protected]) --- Verified commit
https://git.dpdk.org/dpdk-stable/commit/?h=23.11-staging&id=3e44b968b8df9299bf4fc31c5a8c2bfe4d6ce0cd
on baseline f919fadc148d11f2ef(version: v23.11.7-rc1) Tested pass.
OS: Fedora43-64/6.17.1-300.fc43.x86_64
Compiler: clang 21.1.8 (Fedora 21.1.8-4.fc43)

You are receiving this mail because:
You are the assignee for the bug.