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Merge branch 'bugfix/newlib_header_additional_defines' into 'master'

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newlib: fix possible redefinition of likely/unlikely macros

Closes IDFGH-4631

See merge request espressif/esp-idf!12370
This commit is contained in:
Angus Gratton 2021-02-19 02:35:28 +00:00
commit 8c799e6469
2 changed files with 29 additions and 16 deletions
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8
components/esp_common/include/esp_compiler.h
View File

@ -23,12 +23,20 @@
* code.
*/
#if (CONFIG_COMPILER_OPTIMIZATION_PERF)
#ifndef likely
#define likely(x) __builtin_expect(!!(x), 1)
#endif
#ifndef unlikely
#define unlikely(x) __builtin_expect(!!(x), 0)
#endif
#else
#ifndef likely
#define likely(x) (x)
#endif
#ifndef unlikely
#define unlikely(x) (x)
#endif
#endif
/*
* Utility macros used for designated initializers, which work differently

33
components/newlib/platform_include/assert.h
View File

@ -19,23 +19,28 @@
#pragma once
#include <sdkconfig.h>
#include <stdlib.h>
#include "esp_compiler.h"
#include_next <assert.h>
#if defined(CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT) && !defined(NDEBUG)
#undef assert
#define assert(__e) (likely(__e)) ? (void)0 : abort()
#else
/* moved part of toolchain provided assert to there then
* we can tweak the original assert macro to perform likely
* before deliver it to original toolchain implementation
/* moved part of libc provided assert to here allows
* tweaking the assert macro to use __builtin_expect()
* and reduce jumps in the "asserts OK" code path
*
* Note: using __builtin_expect() not likely() to avoid defining the likely
* macro in namespace of non-IDF code that may include this standard header.
*/
#undef assert
#ifdef NDEBUG
# define assert(__e) ((void)0)
#else
# define assert(__e) (likely(__e) ? (void)0 : __assert_func (__FILE__, __LINE__, \
#undef assert
#if defined(NDEBUG)
# define assert(__e) ((void)0)
#elif CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT
#define assert(__e) __builtin_expect(!!(__e), 1) ? (void)0 : abort()
#else // !CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT
#define assert(__e) (__builtin_expect(!!(__e), 1) ? (void)0 : __assert_func (__FILE__, __LINE__, \
__ASSERT_FUNC, #__e))
#endif
#endif