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Bug 1570499 - Part 3: Remove MOZ_FALLTHROUGH macro definition. r=froydnj

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Differential Revision: https://phabricator.services.mozilla.com/D56442

--HG--
extra : moz-landing-system : lando
This commit is contained in:
Chris Peterson 2019-12-20 07:03:27 +00:00
parent 03b2377b75
commit 00129c9a09
1 changed files with 0 additions and 45 deletions
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45
mfbt/Attributes.h
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@ -417,51 +417,6 @@
#ifdef __cplusplus
/**
* MOZ_FALLTHROUGH is an annotation to suppress compiler warnings about switch
* cases that fall through without a break or return statement. MOZ_FALLTHROUGH
* is only needed on cases that have code.
*
* MOZ_FALLTHROUGH_ASSERT is an annotation to suppress compiler warnings about
* switch cases that MOZ_ASSERT(false) (or its alias MOZ_ASSERT_UNREACHABLE) in
* debug builds, but intentionally fall through in release builds. See comment
* in Assertions.h for more details.
*
* switch (foo) {
* case 1: // These cases have no code. No fallthrough annotations are needed.
* case 2:
* case 3: // This case has code, so a fallthrough annotation is needed!
* foo++;
* MOZ_FALLTHROUGH;
* case 4:
* return foo;
*
* default:
* // This case asserts in debug builds, falls through in release.
* MOZ_FALLTHROUGH_ASSERT("Unexpected foo value?!");
* case 5:
* return 5;
* }
*/
# ifndef __has_cpp_attribute
# define __has_cpp_attribute(x) 0
# endif
# if __has_cpp_attribute(clang::fallthrough)
# define MOZ_FALLTHROUGH [[clang::fallthrough]]
# elif __has_cpp_attribute(gnu::fallthrough)
# define MOZ_FALLTHROUGH [[gnu::fallthrough]]
# elif defined(_MSC_VER)
/*
* MSVC's __fallthrough annotations are checked by /analyze (Code Analysis):
* https://msdn.microsoft.com/en-us/library/ms235402%28VS.80%29.aspx
*/
# include <sal.h>
# define MOZ_FALLTHROUGH __fallthrough
# else
# define MOZ_FALLTHROUGH /* FALLTHROUGH */
# endif
/**
* C++11 lets unions contain members that have non-trivial special member
* functions (default/copy/move constructor, copy/move assignment operator,