[DPDK/ethdev Bug 1863] common/cnxk: build errors with LTO

bugzilla at dpdk.org bugzilla at dpdk.org
Wed Dec 31 19:23:51 CET 2025


http://bugs.dpdk.org/show_bug.cgi?id=1863

            Bug ID: 1863
           Summary: common/cnxk: build errors with LTO
           Product: DPDK
           Version: 25.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: ethdev
          Assignee: dev at dpdk.org
          Reporter: stephen at networkplumber.org
  Target Milestone: ---

Doing LTO release build detects errors in irq

../drivers/common/cnxk/roc_platform.c: In function ‘irq_config’:
../drivers/common/cnxk/roc_platform.c:56:14: warning: argument to
variable-length array is too large [-Wvla-larger-than=]
   56 |         char irq_set_buf[MSIX_IRQ_SET_BUF_LEN];
      |              ^
../drivers/common/cnxk/roc_platform.c:56:14: note: limit is 9223372036854775807
bytes, but argument is 18446744073709551548
../drivers/common/cnxk/roc_platform.c: In function ‘irq_init’:
../drivers/common/cnxk/roc_platform.c:92:14: warning: argument to
variable-length array is too large [-Wvla-larger-than=]
   92 |         char irq_set_buf[MSIX_IRQ_SET_BUF_LEN];
      |              ^
../drivers/common/cnxk/roc_platform.c:92:14: note: limit is 9223372036854775807
bytes, but argument is 18446744073709551548

Looks like MSIX_IRQ_SET_BUF_LEN is not a constant??

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