kc3-lang/gnulib/build-aux/gcc-warning.spec

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• Hash : 5e22aee7
  Author :
  Date : 2017-05-16T09:23:52
  

  manywarnings: update for GCC 7
  
  * build-aux/gcc-warning.spec:
  * m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC):
  Add GCC 7 warnings, notably -Wimplicit-fallthrough=5, which
  requires a non-comment fallthrough attribute.  This is a bit
  cleaner than the comment versions.
  * lib/strftime.c, lib/dfa.c, lib/fnmatch.c, lib/mbrtowc.c:
  * lib/vasnprintf.c, tests/macros.h (FALLTHROUGH): New macro.
  Use it whenever one switch case falls through into the next.
  

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• build-aux/gcc-warning.spec

• # options to filter out, and why
  --all-warnings				alias for -Wall
  --extra-warnings			alias for -Wextra
  -Wabi-tag				c++
  -Wabi=					c++
  -Waggregate-return			obsolescent
  -Waliasing				fortran
  -Walign-commons				fortran
  -Waligned-new				c++
  -Waligned-new=[none|global|all]		c++
  -Walloca				we like alloca in small doses
  -Walloca-larger-than=<number>		FIXME: choose something sane?
  -Walloc-size-larger-than=		handled specially by gl_MANYWARN_ALL_GCC
  -Walloc-zero				Gnulib fixes this problem
  -Wampersand				fortran
  -Wargument-mismatch			fortran
  -Warray-bounds				covered by -Warray-bounds=
  -Warray-bounds=				handled specially by gl_MANYWARN_ALL_GCC
  -Warray-temporaries			fortran
  -Wassign-intercept			objc/objc++
  -Wc++-compat				FIXME maybe? borderline.  some will want this
  -Wc++0x-compat				c++
  -Wc++11-compat				c++
  -Wc++14-compat				c++
  -Wc++17-compat				c++
  -Wc++1z-compat				c++
  -Wc-binding-type			fortran
  -Wc90-c99-compat			c compatibility
  -Wc99-c11-compat			c compatibility
  -Wcast-qual				FIXME maybe? too much noise; encourages bad changes
  -Wcharacter-truncation			fortran
  -Wcompare-reals				fortran
  -Wconditionally-supported		c++ and objc++
  -Wconversion				FIXME maybe? too much noise; encourages bad changes
  -Wconversion-extra			fortran
  -Wconversion-null			c++ and objc++
  -Wctor-dtor-privacy			c++
  -Wdeclaration-after-statement		FIXME: do not want.  others may
  -Wdelete-incomplete			c++ and objc++
  -Wdelete-non-virtual-dtor		c++
  -Weffc++				c++
  -Werror-implicit-function-declaration	deprecated
  -Wfloat-conversion			FIXME maybe? borderline.  some will want this
  -Wfloat-equal				FIXME maybe? borderline.  some will want this
  -Wformat				covered by -Wformat=2
  -Wformat=				gcc --help=warnings artifact
  -Wformat-overflow			covered by -Wformat-overflow=2
  -Wformat-overflow=			handled specially by gl_MANYWARN_ALL_GCC
  -Wformat-truncation			covered by -Wformat-truncation=2
  -Wformat-truncation=			handled specially by gl_MANYWARN_ALL_GCC
  -Wframe-larger-than=<number>		FIXME: choose something sane?
  -Wfunction-elimination			fortran
  -Wimplicit-fallthrough			covered by -Wimplicit-fallthrough=2
  -Wimplicit-fallthrough=			handled specially by gl_MANYWARN_ALL_GCC
  -Wimplicit-interface			fortran
  -Wimplicit-procedure			fortran
  -Winherited-variadic-ctor		c++
  -Winteger-division			fortran
  -Wintrinsic-shadow			fortran
  -Wintrinsics-std			fortran
  -Winvalid-offsetof			c++ and objc++
  -Wlarger-than-				gcc --help=warnings artifact
  -Wlarger-than=<number>			FIXME: choose something sane?
  -Wline-truncation			fortran
  -Wliteral-suffix			c++ and objc++
  -Wlong-long				obsolescent
  -Wlto-type-mismatch			c++ and objc++
  -Wmissing-format-attribute		obsolescent
  -Wmissing-noreturn			obsolescent
  -Wmultiple-inheritance			c++ and objc++
  -Wnamespaces				c++
  -Wnoexcept				c++
  -Wnoexcept-type				c++
  -Wnon-template-friend			c++
  -Wnon-virtual-dtor			c++
  -Wnormalized				covered by -Wnormalized=
  -Wnormalized=[none|id|nfc|nfkc]		handled specially by gl_MANYWARN_ALL_GCC
  -Wold-style-cast			c++ and objc++
  -Woverloaded-virtual			c++
  -Woverride-init-side-effects		c++ and objc++
  -Wpadded				FIXME maybe?  warns about "stabil" member in /usr/include/bits/timex.h
  -Wpedantic				FIXME: too strict?
  -Wplacement-new				c++
  -Wplacement-new=			c++
  -Wpmf-conversions			c++ and objc++
  -Wproperty-assign-default		objc++
  -Wprotocol				objc++
  -Wreal-q-constant			fortran
  -Wrealloc-lhs				fortran
  -Wrealloc-lhs-all			fortran
  -Wredundant-decls			FIXME maybe? many _gl_cxxalias_dummy FPs
  -Wregister				c++ and objc++
  -Wreorder				c++ and objc++
  -Wselector				objc and objc++
  -Wshadow-ivar				objc
  -Wshadow=compatible-local		covered by -Wshadow
  -Wshadow-compatible-local		covered by -Wshadow
  -Wshadow=global				covered by -Wshadow
  -Wshadow=local				covered by -Wshadow
  -Wshadow-local				covered by -Wshadow
  -Wshift-overflow			covered by -Wshift-overflow=2
  -Wshift-overflow=			gcc --help=warnings artifact
  -Wsign-compare				FIXME maybe? borderline.  some will want this
  -Wsign-conversion			FIXME maybe? borderline.  some will want this
  -Wsign-promo				c++ and objc++
  -Wsized-deallocation			c++ and objc++
  -Wstack-usage=<number>			FIXME: choose something sane?
  -Wstrict-aliasing=			FIXME: choose something sane?
  -Wstrict-null-sentinel			c++ and objc++
  -Wstrict-overflow=			FIXME: choose something sane?
  -Wstrict-selector-match			objc and objc++
  -Wstringop-overflow			covered by -Wstringop-overflow=
  -Wstringop-overflow=			handled specially by gl_MANYWARN_ALL_GCC
  -Wsubobject-linkage			c++ and objc++
  -Wsuggest-override			c++ and objc++
  -Wsurprising				fortran
  -Wswitch-enum				FIXME maybe? borderline.  some will want this
  -Wsynth					deprecated
  -Wtabs					fortran
  -Wtarget-lifetime			fortran
  -Wtemplates				c++ and objc++
  -Wterminate				c++ and objc++
  -Wtraditional				obsolescent
  -Wtraditional-conversion		obsolescent
  -Wundeclared-selector			objc and objc++
  -Wundef					FIXME maybe? too many false positives
  -Wundefined-do-loop			fortran
  -Wunderflow				fortran
  -Wunreachable-code			obsolescent no-op
  -Wunsuffixed-float-constants		triggers warning in gnulib's timespec.h
  -Wunused-const-variable			covered by -Wunusec-const-variable=2
  -Wunused-const-variable=		gcc --help=warnings artifact
  -Wunused-dummy-argument			fortran
  -Wuse-without-only			fortran
  -Wuseless-cast				c++ and objc++
  -Wvirtual-inheritance			c++
  -Wvirtual-move-assign			c++
  -Wvla-larger-than=<number>		handled specially by gl_MANYWARN_ALL_GCC
  -Wzero-as-null-pointer-constant		c++ and objc++
  -Wzerotrip				fortran
  -frequire-return-statement		go
  

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