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Add NS_DUMMY_DEFINITIONS_OK #3830

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Merged
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Feb 23, 2017
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Add NS_DUMMY_DEFINITIONS_OK #3830

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19 changes: 19 additions & 0 deletions features/FEATURE_COMMON_PAL/nanostack-libservice/mbed-client-libservice/ns_types.h
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Original file line number Diff line number Diff line change
Expand Up @@ -256,6 +256,25 @@ typedef int_fast32_t int_fast24_t;
#define NS_FUNNY_COMPARE_RESTORE
#endif

/** \brief Pragma to suppress warnings arising from dummy definitions.
*
* Useful when you have function-like macros that returning constants
* in cut-down builds. Can be fairly cavalier about disabling as we
* do not expect every build to use this macro. Generic builds of
* components should ensure this is not included by only using it in
* a ifdef blocks providing dummy definitions.
*/
#ifdef __CC_ARM
// statement is unreachable(111), controlling expression is constant(236), expression has no effect(174),
// function was declared but never referenced(177), variable was set but never used(550)
#define NS_DUMMY_DEFINITIONS_OK _Pragma("diag_suppress=111,236,174,177,550")
#elif defined __IAR_SYSTEMS_ICC__
// controlling expression is constant
#define NS_DUMMY_DEFINITIONS_OK _Pragma("diag_suppress=Pe236")
#else
#define NS_DUMMY_DEFINITIONS_OK
#endif

/** \brief Convert pointer to member to pointer to containing structure */
#define NS_CONTAINER_OF(ptr, type, member) \
((type *) ((char *) (ptr) - offsetof(type, member)))
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