Issue reported by Drea Pinski in: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101913#c6 * HACKING: Stop recommending -Wstrict-overflow. * build-aux/g++-warning.spec: * build-aux/gcc-warning.spec: Say -Wstrict-overflow is deprecated. * doc/manywarnings.texi (manywarnings): Stop mentioning it. * m4/manywarnings-c++.m4 (gl_MANYWARN_ALL_GCC_CXX_IMPL): * m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC): Stop using it. --- ChangeLog | 13 +++++++++++++ HACKING | 2 -- build-aux/g++-warning.spec | 2 +- build-aux/gcc-warning.spec | 3 ++- doc/manywarnings.texi | 3 +-- m4/manywarnings-c++.m4 | 1 - m4/manywarnings.m4 | 1 - 7 files changed, 17 insertions(+), 8 deletions(-)
diff --git a/ChangeLog b/ChangeLog index 838fcc0d63..977c787a34 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,16 @@ +2026-05-28 Paul Eggert <[email protected]> + + manywarnings: -Wstrict-overflow is deprecated + Issue reported by Drea Pinski in: + https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101913#c6 + * HACKING: Stop recommending -Wstrict-overflow. + * build-aux/g++-warning.spec: + * build-aux/gcc-warning.spec: Say -Wstrict-overflow is deprecated. + * doc/manywarnings.texi (manywarnings): Stop mentioning it. + * m4/manywarnings-c++.m4 (gl_MANYWARN_ALL_GCC_CXX_IMPL): + * m4/manywarnings.m4 (gl_MANYWARN_ALL_GCC): + Stop using it. + 2026-05-27 Bruno Haible <[email protected]> fma: Work around glibc 2.43 regression. diff --git a/HACKING b/HACKING index 33628eafc0..f622b8be95 100644 --- a/HACKING +++ b/HACKING @@ -315,7 +315,6 @@ there are three possible approaches: -Woverlength-strings -Wpacked -Wpointer-arith - -Wstrict-overflow -Wsuggest-final-methods -Wsuggest-final-types -Wsync-nand @@ -399,7 +398,6 @@ there are three possible approaches: -Woverlength-strings -Wpacked -Wpointer-arith - -Wstrict-overflow -Wsuggest-attribute=format -Wsuggest-final-methods -Wsuggest-final-types diff --git a/build-aux/g++-warning.spec b/build-aux/g++-warning.spec index 2235d65e60..7d83432ef8 100644 --- a/build-aux/g++-warning.spec +++ b/build-aux/g++-warning.spec @@ -78,7 +78,7 @@ -Wsign-conversion FIXME maybe? borderline. some will want this -Wstack-usage= FIXME: choose something sane? -Wstrict-aliasing= FIXME: choose something sane? --Wstrict-overflow= FIXME: choose something sane? +-Wstrict-overflow= deprecated and slated for removal -Wstrict-prototypes c -Wstrict-selector-match objc and objc++ -Wsurprising fortran diff --git a/build-aux/gcc-warning.spec b/build-aux/gcc-warning.spec index f0843acc49..6bf931808e 100644 --- a/build-aux/gcc-warning.spec +++ b/build-aux/gcc-warning.spec @@ -246,7 +246,8 @@ -Wstack-usage=<byte-size> FIXME: choose something sane? -Wstrict-aliasing enabled by -Wall -Wstrict-aliasing=<0,3> FIXME: choose something sane? --Wstrict-overflow=<0,5> FIXME: choose something sane? +-Wstrict-overflow deprecated and slated for removal +-Wstrict-overflow=<0,5> deprecated and slated for removal -Wstring-compare enabled by -Wextra -Wstringop-overflow covered by -Wstringop-overflow=2 -Wstringop-overflow=<0,4> defaults to 2 diff --git a/doc/manywarnings.texi b/doc/manywarnings.texi index 76ab0d1a76..27f52c2194 100644 --- a/doc/manywarnings.texi +++ b/doc/manywarnings.texi @@ -23,7 +23,6 @@ manywarnings # dangerous than casting any other value. nw="$nw -Winline" # It's OK to not inline. nw="$nw -Wsign-compare" # Too many false alarms. - nw="$nw -Wstrict-overflow" # It's OK to optimize strictly. nw="$nw -Wsystem-headers" # Don't warn in system headers. # Setup the list of meaningful warning options for the C compiler. @@ -64,7 +63,7 @@ manywarnings @item Start with the newest major release of GCC. This will save you time, because some warning options produce many false -alarms with older versions of GCC (such as @code{-Wstrict-overflow} or +alarms with older versions of GCC (such as @code{-Wunsafe-loop-optimizations}). @item Consider the platforms commonly used when enabling GCC warnings. diff --git a/m4/manywarnings-c++.m4 b/m4/manywarnings-c++.m4 index a73f33f245..8c59d21500 100644 --- a/m4/manywarnings-c++.m4 +++ b/m4/manywarnings-c++.m4 @@ -169,7 +169,6 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC_CXX_IMPL] -Wstack-protector \ -Wstrict-aliasing \ -Wstrict-null-sentinel \ - -Wstrict-overflow \ -Wsuggest-attribute=const \ -Wsuggest-attribute=format \ -Wsuggest-attribute=noreturn \ diff --git a/m4/manywarnings.m4 b/m4/manywarnings.m4 index ea0442d039..536d7d328c 100644 --- a/m4/manywarnings.m4 +++ b/m4/manywarnings.m4 @@ -133,7 +133,6 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC(C -Wshadow \ -Wstack-protector \ -Wstrict-flex-arrays \ - -Wstrict-overflow \ -Wstrict-prototypes \ -Wsuggest-attribute=cold \ -Wsuggest-attribute=const \ -- 2.54.0
