kasjer opened a new pull request, #3435:
URL: https://github.com/apache/mynewt-core/pull/3435
Depending on optimization and compiler used unit test could produce
following error:
repos/apache-mynewt-core/kernel/os/selftest/src/msys_test.c: In function
‘os_msys_test_setup’:
repos/apache-mynewt-core/kernel/os/selftest/src/msys_test.c:61:30: error:
dereferencing type-punned pointer will break strict-aliasing rules
[-Werror=strict-aliasing]
61 | context->mempool_list = *(struct os_mempool_list
*)&g_os_mempool_list;
|
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
This is because declaration of extern g_os_mempool_list was taken directly
from os_mempool.c where this variable is create without specifying type with
macro STAILQ_HEAD(, os_mempool) that produces:
struct {
struct os_mempool *stqh_first;
struct os_mempool **stqh_last;
} g_os_mempool_list;
while file mempool_list is same structure but with named type. To make
compiler happy g_os_mempool_list is now of type struct os_mempool_list that has
same fields and is already declared like this:
STAILQ_HEAD(os_mempool_list, os_mempool);
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