[DPDK/ethdev Bug 1821] bnxt: warnings when building with gcc-16

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Tue Nov 4 06:17:49 CET 2025
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http://bugs.dpdk.org/show_bug.cgi?id=1821

            Bug ID: 1821
           Summary: bnxt: warnings when building with gcc-16
           Product: DPDK
           Version: 25.07
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev at dpdk.org
          Reporter: stephen at networkplumber.org
  Target Milestone: ---

In file included from ../drivers/net/bnxt/tf_ulp/ulp_mapper.h:19,
                 from ../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c:6:
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_tfc_wc_tcam_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c:138:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c: In function
‘ulp_mapper_tfc_wc_tcam_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c:88:18: note: ‘cword’ declared here
   88 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_tfc_wc_tcam_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c:138:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c: In function
‘ulp_mapper_tfc_wc_tcam_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c:88:18: note: ‘cword’ declared here
   88 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_tfc_wc_tcam_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c:138:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c: In function
‘ulp_mapper_tfc_wc_tcam_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c:88:18: note: ‘cword’ declared here
   88 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_tfc_wc_tcam_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c:138:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c: In function
‘ulp_mapper_tfc_wc_tcam_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper_tfc.c:88:18: note: ‘cword’ declared here
   88 |         uint32_t cword, i, rc;
      |                  ^~~~~
In file included from ../drivers/net/bnxt/tf_ulp/ulp_mapper.c:12:
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_wc_tcam_tbl_dyn_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2499:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper.c: In function
‘ulp_mapper_wc_tcam_tbl_dyn_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2455:18: note: ‘cword’ declared here
 2455 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_wc_tcam_tbl_dyn_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2499:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper.c: In function
‘ulp_mapper_wc_tcam_tbl_dyn_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2455:18: note: ‘cword’ declared here
 2455 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_wc_tcam_tbl_dyn_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2499:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper.c: In function
‘ulp_mapper_wc_tcam_tbl_dyn_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2455:18: note: ‘cword’ declared here
 2455 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_wc_tcam_tbl_dyn_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2499:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper.c: In function
‘ulp_mapper_wc_tcam_tbl_dyn_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2455:18: note: ‘cword’ declared here
 2455 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_wc_tcam_tbl_dyn_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2504:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper.c: In function
‘ulp_mapper_wc_tcam_tbl_dyn_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2455:18: note: ‘cword’ declared here
 2455 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_wc_tcam_tbl_dyn_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2504:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper.c: In function
‘ulp_mapper_wc_tcam_tbl_dyn_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2455:18: note: ‘cword’ declared here
 2455 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_wc_tcam_tbl_dyn_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2504:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper.c: In function
‘ulp_mapper_wc_tcam_tbl_dyn_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2455:18: note: ‘cword’ declared here
 2455 |         uint32_t cword, i, rc;
      |                  ^~~~~
In function ‘ulp_bs_push_msb’,
    inlined from ‘ulp_blob_push’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:407:8,
    inlined from ‘ulp_blob_push_32’ at
../drivers/net/bnxt/tf_ulp/ulp_utils.h:551:7,
    inlined from ‘ulp_mapper_wc_tcam_tbl_dyn_post_process’ at
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2504:9:
../drivers/net/bnxt/tf_ulp/ulp_utils.h:336:17: warning: ‘cword’ may be used
uninitialized [-Wmaybe-uninitialized]
  336 |                 ulp_bs_put_msb(bs, pos, 8, val[i]);
      |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../drivers/net/bnxt/tf_ulp/ulp_mapper.c: In function
‘ulp_mapper_wc_tcam_tbl_dyn_post_process’:
../drivers/net/bnxt/tf_ulp/ulp_mapper.c:2455:18: note: ‘cword’ declared here
 2455 |         uint32_t cword, i, rc;
      |                  ^~~~~

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Next message (by thread): [DPDK/ethdev Bug 1822] net/intel/fm10k: warning with gcc-16
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