[DPDK/eventdev Bug 1423] Using -fno-strict-aliasing when compiling DPDK unit tests reduces their effectiveness

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=1423

            Bug ID: 1423
           Summary: Using -fno-strict-aliasing when compiling DPDK unit
                    tests reduces their effectiveness
           Product: DPDK
           Version: 23.11
          Hardware: All
                OS: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: eventdev
          Assignee: dev at dpdk.org
          Reporter: mattias.ronnblom at ericsson.com
  Target Milestone: ---

6b89650418f adds
+# Strict-aliasing rules are violated by uint8_t[] to context size casts.
+CFLAGS += -fno-strict-aliasing
to app/test/meson.build.

This flag applies to all tests, not just the broken RTE graph tests (or SUT?).

Passing this flag to the compiler will prevent any functional tests (of any
component) from detecting any aliasing-related bugs found in code located in
SUT header files.

RTE graph should be fixed, rather than a whole-sale application of this
work-around to DPDK test suite.

In additional, reducing the level of compiler optimization will make the perf
test less relevant.

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