Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'compiler-attributes-for-linus-v5.11' of git://github.com/ojeda/linux
Pull ENABLE_MUST_CHECK removal from Miguel Ojeda:
"Remove CONFIG_ENABLE_MUST_CHECK (Masahiro Yamada)"
Note that this removes the config option by making the must-check
unconditional, not by removing must check itself.
* tag 'compiler-attributes-for-linus-v5.11' of git://github.com/ojeda/linux:
Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK
+6
-15
+6
include/linux/compiler_attributes.h
+6
include/linux/compiler_attributes.h
···
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#define __used __attribute__((__used__))
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/*
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* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-warn_005funused_005fresult-function-attribute
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* clang: https://clang.llvm.org/docs/AttributeReference.html#nodiscard-warn-unused-result
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*/
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#define __must_check __attribute__((__warn_unused_result__))
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+
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+
/*
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* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-weak-function-attribute
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* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-weak-variable-attribute
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*/
-6
include/linux/compiler_types.h
-6
include/linux/compiler_types.h
···
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unsigned long constant;
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};
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-
#ifdef CONFIG_ENABLE_MUST_CHECK
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-
#define __must_check __attribute__((__warn_unused_result__))
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-
#else
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-
#define __must_check
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-
#endif
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-
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#if defined(CC_USING_HOTPATCH)
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#define notrace __attribute__((hotpatch(0, 0)))
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#elif defined(CC_USING_PATCHABLE_FUNCTION_ENTRY)
-8
lib/Kconfig.debug
-8
lib/Kconfig.debug
···
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endif # DEBUG_INFO
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-
config ENABLE_MUST_CHECK
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bool "Enable __must_check logic"
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default y
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help
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Enable the __must_check logic in the kernel build. Disable this to
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suppress the "warning: ignoring return value of 'foo', declared with
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attribute warn_unused_result" messages.
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-
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config FRAME_WARN
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int "Warn for stack frames larger than"
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range 0 8192