[PATCH v12 0/8] test: fix format-truncation warnings

[David Marchand]

On Wed, 21 Jan 2026 at 22:08, Stephen Hemminger
<stephen at networkplumber.org> wrote:
>
> This patchset addresses the -Wformat-truncation warnings throughout
> the DPDK test suite, allowing the warning to be re-enabled.
>
> The changes include:
>  - Properly sizing buffers using named constants (RTE_MEMZONE_NAMESIZE, NAME_MAX)
>  - Adding a common file_prefix_arg() helper to reduce code duplication
>  - Using standard library functions (getmntent) for mount parsing
>  - Checking snprintf() return values for potential truncation
>  - Converting problematic 2D arrays to pointer arrays
>
> After these fixes, the final patch removes -Wno-format-truncation from
> the test build flags, ensuring these issues are caught in the future.
>
> Several patches are marked for stable backport where they fix real
> potential bugs rather than just theoretical compiler warnings.
>
> v12 - rebase to handle new eal_flags printf's
>
> Stephen Hemminger (8):
>   test: increase size of memzone name
>   test: add new function to get current file-prefix arg
>   test: avoid overflowing huge directory path
>   test: fix format overflow warning in ACL test
>   test: fix impossible format-truncation in cfgfiles
>   test: fix format overflow in cryptodev test
>   test: fix overflow warnings in common code
>   test: re-enable format-truncation warnings
>
>  app/test/meson.build            |   1 -
>  app/test/process.h              |  44 ++++--
>  app/test/test_cfgfile.c         |   8 +-
>  app/test/test_cryptodev.c       |  22 ++-
>  app/test/test_eal_flags.c       | 269 +++++++++++---------------------
>  app/test/test_memzone.c         |   2 +-
>  app/test/test_mp_secondary.c    |  14 +-
>  app/test/test_pdump.c           |  13 +-
>  app/test/test_table_acl.c       |  30 ++--
>  app/test/test_timer_secondary.c |  12 +-
>  10 files changed, 174 insertions(+), 241 deletions(-)

Series applied, thanks.


-- 
David Marchand