[DPDK/core Bug 2061] [Debug][aarch64] test_stack_perf fails to build with GCC 13 due to memcpy overread/overflow warning

[DPDK/core Bug 2061] [Debug][aarch64] test_stack_perf fails to build with GCC 13 due to memcpy overread/overflow warning

[bugzilla]

https://bugs.dpdk.org/show_bug.cgi?id=2061

            Bug ID: 2061
           Summary: [Debug][aarch64] test_stack_perf fails to build with
                    GCC 13 due to memcpy overread/overflow warning
           Product: DPDK
           Version: 26.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: core
          Assignee: dev@dpdk.org
          Reporter: alialnu@nvidia.com
  Target Milestone: ---

$ meson --werror --buildtype=debug build && ninja -C build

[..]
[3428/3451] Compiling C object app/dpdk-test.p/test_test_tailq.c.o
[3429/3451] Compiling C object
app/dpdk-test.p/test_test_security_inline_macsec.c.o
[3430/3451] Compiling C object app/dpdk-test.p/test_test_stack_perf.c.o
FAILED: app/dpdk-test.p/test_test_stack_perf.c.o 
[..]
In file included from ../../root/dpdk/lib/eal/arm/include/rte_memcpy.h:9,
                 from ../../root/dpdk/lib/stack/rte_stack_pile.h:8,
                 from ../../root/dpdk/lib/stack/rte_stack.h:152,
                 from ../../root/dpdk/app/test/test_stack_perf.c:12:
In function '__rte_stack_pile_push',
    inlined from 'rte_stack_push' at
../../root/dpdk/lib/stack/rte_stack.h:179:10,
    inlined from 'test_single_push_pop' at
../../root/dpdk/app/test/test_stack_perf.c:261:3:
../../root/dpdk/lib/eal/arm/include/rte_memcpy_64.h:365:33: error: 'memcpy'
reading 256 bytes from a region of size 8 [-Werror=stringop-overread]
  365 | #define rte_memcpy(d, s, n)     memcpy((d), (s), (n))
      |                                 ^~~~~~~~~~~~~~~~~~~~~
../../root/dpdk/lib/stack/rte_stack_pile.h:160:17: note: in expansion of macro
'rte_memcpy'
  160 |                 rte_memcpy(((struct rte_stack_pile_bulk_elem
*)tmp)->objs,
      |                 ^~~~~~~~~~
../../root/dpdk/app/test/test_stack_perf.c: In function 'test_single_push_pop':
../../root/dpdk/app/test/test_stack_perf.c:255:15: note: source object 'obj' of
size 8
  255 |         void *obj = NULL;
      |               ^~~
In function '__rte_stack_pile_bulk_pop_elems',
    inlined from '__rte_stack_pile_pop' at
../../root/dpdk/lib/stack/rte_stack_pile.h:274:15,
    inlined from 'rte_stack_pop' at
../../root/dpdk/lib/stack/rte_stack.h:205:10,
    inlined from 'test_single_push_pop' at
../../root/dpdk/app/test/test_stack_perf.c:262:3:
../../root/dpdk/lib/eal/arm/include/rte_memcpy_64.h:365:33: error: 'memcpy'
writing 256 bytes into a region of size 8 overflows the destination
[-Werror=stringop-overflow=]
  365 | #define rte_memcpy(d, s, n)     memcpy((d), (s), (n))
      |                                 ^~~~~~~~~~~~~~~~~~~~~
../../root/dpdk/lib/stack/rte_stack_pile.h:75:25: note: in expansion of macro
'rte_memcpy'
   75 |                         rte_memcpy(&obj_table[i *
RTE_STACK_PILE_BULK_SIZE],
      |                         ^~~~~~~~~~
../../root/dpdk/app/test/test_stack_perf.c: In function 'test_single_push_pop':
../../root/dpdk/app/test/test_stack_perf.c:255:15: note: destination object
'obj' of size 8
  255 |         void *obj = NULL;
      |               ^~~
cc1: all warnings being treated as errors
[..]
ninja: build stopped: subcommand failed.

git-bisect points to ee0822a0ef41 ("stack: introduce pile")

Meson: 1.3.2
OS: Ubuntu 24.04.4 LTS
Compiler: gcc (Ubuntu 13.3.0-6ubuntu2~24.04.1) 13.3.0

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[DPDK/core Bug 2061] [Debug][aarch64] test_stack_perf fails to build with GCC 13 due to memcpy overread/overflow warning

[bugzilla]

https://bugs.dpdk.org/show_bug.cgi?id=2061

David Marchand (david.marchand@redhat.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
                 CC|                            |david.marchand@redhat.com
             Status|IN_PROGRESS                 |RESOLVED

--- Comment #4 from David Marchand (david.marchand@redhat.com) ---
Fixed in commit 812a18c167f4 ("build: disable GCC string op warnings when
unoptimized").

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