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mbed_toolchain: Use C++11/C11 attributes 

Newer language standards have standard forms for `MBED_NORETURN` and
`MBED_ALIGN` attributes. Use them when available.

C++14 also adds `[[deprecated]]`, but as it needs to go in the middle of
structure definitions as `class [[deprecated]] MyClass`, it's not a
total drop-in-replacemend for `MBED_DEPRECATED`, so that is not
attempted here.

Using standard forms increases the chances that code analysis tools such
Coverity will recognise them - particularly important for "no return".
pull/10837/head
Kevin Bracey 2019-06-13 12:16:16 +03:00
parent 56a043cbd1
commit 703af8df06
1 changed files with 10 additions and 2 deletions
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12
platform/mbed_toolchain.h
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@ -72,7 +72,11 @@
* @endcode
*/
#ifndef MBED_ALIGN
#if defined(__ICCARM__)
#if __cplusplus >= 201103 && !defined __CC_ARM
#define MBED_ALIGN(N) alignas(N)
#elif __STDC_VERSION__ >= 201112 && !defined __CC_ARM
#define MBED_ALIGN(N) _Alignas(N)
#elif defined(__ICCARM__)
#define MBED_ALIGN(N) _Pragma(MBED_STRINGIFY(data_alignment=N))
#else
#define MBED_ALIGN(N) __attribute__((aligned(N)))
@ -298,7 +302,11 @@
* @endcode
*/
#ifndef MBED_NORETURN
#if defined(__GNUC__) || defined(__clang__) || defined(__CC_ARM)
#if __cplusplus >= 201103
#define MBED_NORETURN [[noreturn]]
#elif __STDC_VERSION__ >= 201112
#define MBED_NORETURN _Noreturn
#elif defined(__GNUC__) || defined(__clang__) || defined(__CC_ARM)
#define MBED_NORETURN __attribute__((noreturn))
#elif defined(__ICCARM__)
#define MBED_NORETURN __noreturn