* [PATCH] Port manywarnings to GCC 9
@ 2019-05-03 17:58 Paul Eggert
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From: Paul Eggert @ 2019-05-03 17:58 UTC (permalink / raw)
To: bug-gnulib; +Cc: Paul Eggert
* build-aux/gcc-warning.spec: Sort. Add -Wattribute-alias,
-Wc11-c2x-compat, -Wcast-result (for the D programming language),
-Wclass-conversion, -Wdeprecated-copy, -Wdeprecated-copy-dtor,
-Winit-list-lifetime, -Wpessimizing-move, -Wprio-ctor-dtor,
-Wredundant-move. Adjust to minor wording changes in GCC 9’s
--help=warnings output.
* m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC): Add -Wabsolute-value,
-Waddress-of-packed-member, -Wattribute-warning, -Wcannot-profile,
-Wmissing-profile. Change -Wattribute-alias to -Wattribute-alias=2.
---
ChangeLog | 13 +++++++++++++
build-aux/gcc-warning.spec | 32 +++++++++++++++++++++++---------
m4/manywarnings.m4 | 9 +++++++--
3 files changed, 43 insertions(+), 11 deletions(-)
diff --git a/ChangeLog b/ChangeLog
index cf4116bf3..92aa64a4f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+2019-05-03 Paul Eggert <eggert@cs.ucla.edu>
+
+ Port manywarnings to GCC 9
+ * build-aux/gcc-warning.spec: Sort. Add -Wattribute-alias,
+ -Wc11-c2x-compat, -Wcast-result (for the D programming language),
+ -Wclass-conversion, -Wdeprecated-copy, -Wdeprecated-copy-dtor,
+ -Winit-list-lifetime, -Wpessimizing-move, -Wprio-ctor-dtor,
+ -Wredundant-move. Adjust to minor wording changes in GCC 9’s
+ --help=warnings output.
+ * m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC): Add -Wabsolute-value,
+ -Waddress-of-packed-member, -Wattribute-warning, -Wcannot-profile,
+ -Wmissing-profile. Change -Wattribute-alias to -Wattribute-alias=2.
+
2019-04-30 Paul Eggert <eggert@cs.ucla.edu>
Sync lib/mktime-internal.h from glibc
diff --git a/build-aux/gcc-warning.spec b/build-aux/gcc-warning.spec
index 8c0a3dc75..723d287af 100644
--- a/build-aux/gcc-warning.spec
+++ b/build-aux/gcc-warning.spec
@@ -1,23 +1,25 @@
# 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++
--Wabi this is now a no-op
-Waggregate-return obsolescent
-Waliasing fortran
-Walign-commons fortran
-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
+-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++
@@ -25,13 +27,16 @@
-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++
@@ -42,6 +47,8 @@
-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
@@ -49,25 +56,26 @@
-Wfloat-conversion FIXME maybe? borderline. some will want this
-Wfloat-equal FIXME maybe? borderline. some will want this
-Wformat covered by -Wformat=2
--Wformat=<0,2> gcc --help=warnings artifact
-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
--Wframe-larger-than=<number> FIXME: choose something sane?
+-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=<number> FIXME: choose something sane?
+-Wlarger-than=<byte-size> FIXME: choose something sane?
-Wline-truncation fortran
-Wliteral-suffix c++ and objc++
-Wlong-long obsolescent
@@ -76,6 +84,9 @@
-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++
@@ -87,31 +98,34 @@
-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-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=<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=<number> FIXME: choose something sane?
+-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?
diff --git a/m4/manywarnings.m4 b/m4/manywarnings.m4
index e0488a5cb..6bb9f8f84 100644
--- a/m4/manywarnings.m4
+++ b/m4/manywarnings.m4
@@ -1,4 +1,4 @@
-# manywarnings.m4 serial 17
+# manywarnings.m4 serial 18
dnl Copyright (C) 2008-2019 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
@@ -112,16 +112,19 @@ m4_defun([gl_MANYWARN_ALL_GCC(C)],
gl_manywarn_set=
for gl_manywarn_item in -fno-common \
-W \
+ -Wabsolute-value \
-Waddress \
+ -Waddress-of-packed-member \
-Waggressive-loop-optimizations \
-Wall \
- -Wattribute-alias \
+ -Wattribute-warning \
-Wattributes \
-Wbad-function-cast \
-Wbool-compare \
-Wbool-operation \
-Wbuiltin-declaration-mismatch \
-Wbuiltin-macro-redefined \
+ -Wcannot-profile \
-Wcast-align \
-Wcast-align=strict \
-Wcast-function-type \
@@ -186,6 +189,7 @@ m4_defun([gl_MANYWARN_ALL_GCC(C)],
-Wmissing-field-initializers \
-Wmissing-include-dirs \
-Wmissing-parameter-type \
+ -Wmissing-profile \
-Wmissing-prototypes \
-Wmultichar \
-Wmultistatement-macros \
@@ -292,6 +296,7 @@ m4_defun([gl_MANYWARN_ALL_GCC(C)],
AC_MSG_RESULT([$gl_alloc_max])
gl_manywarn_set="$gl_manywarn_set -Walloc-size-larger-than=$gl_alloc_max"
gl_manywarn_set="$gl_manywarn_set -Warray-bounds=2"
+ gl_manywarn_set="$gl_manywarn_set -Wattribute-alias=2"
gl_manywarn_set="$gl_manywarn_set -Wformat-overflow=2"
gl_manywarn_set="$gl_manywarn_set -Wformat-truncation=2"
gl_manywarn_set="$gl_manywarn_set -Wimplicit-fallthrough=5"
--
2.21.0
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