| # options to filter out, and why |
| --all-warnings alias for -Wall |
| --extra-warnings alias for -Wextra |
| -Wabi this is now a no-op |
| -Wabi-tag c++ |
| -Wabi= c++ |
| -Waggregate-return obsolescent |
| -Waliasing fortran |
| -Walign-commons fortran |
| -Waligned-new=[none|global|all] c++ |
| -Walloc-size-larger-than= handled specially by gl_MANYWARN_ALL_GCC |
| -Walloc-zero Gnulib fixes this problem |
| -Walloca we like alloca in small doses |
| -Walloca-larger-than=<number> FIXME: choose something sane? |
| -Wampersand fortran |
| -Wargument-mismatch fortran |
| -Warray-bounds covered by -Warray-bounds= |
| -Warray-bounds=<0,2> handled specially by gl_MANYWARN_ALL_GCC |
| -Warray-temporaries fortran |
| -Wassign-intercept objc/objc++ |
| -Wattribute-alias covered by -Wattribute-alias=2 |
| -Wattribute-alias=<0,2> handled specially by gl_MANYWARN_ALL_GCC |
| -Wc++-compat only useful for code meant to be compiled by a C++ compiler |
| -Wc++0x-compat c++ |
| -Wc++11-compat c++ |
| -Wc++14-compat c++ |
| -Wc++17-compat c++ |
| -Wc++1z-compat c++ |
| -Wc-binding-type fortran |
| -Wc11-c2x-compat c compatibility |
| -Wc90-c99-compat c compatibility |
| -Wc99-c11-compat c compatibility |
| -Wcast-qual FIXME maybe? too much noise; encourages bad changes |
| -Wcast-result D |
| -Wcatch-value c++ |
| -Wcatch-value=<0,3> c++ |
| -Wcharacter-truncation fortran |
| -Wchkp deprecated |
| -Wclass-conversion c++ and objc++ |
| -Wclass-memaccess c++ |
| -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++ |
| -Wdeprecated-copy c++ and objc++ |
| -Wdeprecated-copy-dtor c++ and objc++ |
| -Wdo-subscript fortran |
| -Weffc++ c++ |
| -Werror-implicit-function-declaration deprecated |
| -Wextra-semi c++ |
| -Wfloat-conversion FIXME maybe? borderline. some will want this |
| -Wfloat-equal FIXME maybe? borderline. some will want this |
| -Wformat covered by -Wformat=2 |
| -Wformat-overflow<0,2> gcc --help=warnings artifact |
| -Wformat-overflow=<0,2> handled specially by gl_MANYWARN_ALL_GCC |
| -Wformat-truncation covered by -Wformat-truncation=2 |
| -Wformat-truncation=<0,2> handled specially by gl_MANYWARN_ALL_GCC |
| -Wformat=<0,2> gcc --help=warnings artifact |
| -Wframe-larger-than=<byte-size> FIXME: choose something sane? |
| -Wfunction-elimination fortran |
| -Wimplicit-fallthrough covered by -Wimplicit-fallthrough=2 |
| -Wimplicit-fallthrough=<0,5> handled specially by gl_MANYWARN_ALL_GCC |
| -Wimplicit-interface fortran |
| -Wimplicit-procedure fortran |
| -Winherited-variadic-ctor c++ |
| -Winit-list-lifetime c++ and objc++ |
| -Winteger-division fortran |
| -Wintrinsic-shadow fortran |
| -Wintrinsics-std fortran |
| -Winvalid-offsetof c++ and objc++ |
| -Wjump-misses-init only useful for code meant to be compiled by a C++ compiler |
| -Wlarger-than- gcc --help=warnings artifact |
| -Wlarger-than=<byte-size> 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++ |
| -Wno-alloc-size-larger-than see -Walloc-size-larger-than |
| -Wno-alloca-larger-than see -Walloca-larger-than |
| -Wno-vla-larger-than see -Wvla-larger-than |
| -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? |
| -Wpessimizing-move c++ and objc++ |
| -Wplacement-new c++ |
| -Wplacement-new=<0,2> c++ |
| -Wpmf-conversions c++ and objc++ |
| -Wprio-ctor-dtor c++ |
| -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 |
| -Wredundant-move c++ and objc++ |
| -Wregister c++ and objc++ |
| -Wreorder c++ and objc++ |
| -Wselector objc and objc++ |
| -Wshadow-compatible-local covered by -Wshadow |
| -Wshadow-ivar objc |
| -Wshadow-local covered by -Wshadow |
| -Wshadow=compatible-local covered by -Wshadow |
| -Wshadow=global covered by -Wshadow |
| -Wshadow=local covered by -Wshadow |
| -Wshift-overflow covered by -Wshift-overflow=2 |
| -Wshift-overflow=<0,2> 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=<byte-size> FIXME: choose something sane? |
| -Wstrict-aliasing=<0,3> FIXME: choose something sane? |
| -Wstrict-null-sentinel c++ and objc++ |
| -Wstrict-overflow=<0,5> FIXME: choose something sane? |
| -Wstrict-selector-match objc and objc++ |
| -Wstringop-overflow covered by -Wstringop-overflow= |
| -Wstringop-overflow=<0,4> handled specially by gl_MANYWARN_ALL_GCC |
| -Wsubobject-linkage c++ and objc++ |
| -Wsuggest-override c++ and objc++ |
| -Wsurprising fortran |
| -Wswitch-default https://lists.gnu.org/r/bug-gnulib/2018-05/msg00179.html |
| -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=<0,2> 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 |
