Re: Suspicious warning in W64 build

[Fabrice Popineau <fabrice.popineau@centralesupelec.fr>]

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2017-09-12 19:49 GMT+02:00 Eli Zaretskii <eliz@gnu.org>:

> > Date: Sat, 09 Sep 2017 19:07:23 +0300
> > From: Eli Zaretskii <eliz@gnu.org>
> > Cc: angelo.g0@libero.it, emacs-devel@gnu.org
> >
> > > At least some of the "-Wformat=" warnings are misleading.
> > > Emacs has to use MSVC's rules for format strings, but GCC
> > > warns based on the C standard rules implemented in GCC.
> >
> > Actually, these are the most worrisome, because they seem to tell your
> > MinGW headers might mismatch your GCC version.  Or maybe this is a
> > general MinGW64 problem that should be solved by MinGW64 developers.
>
> OK, I got some information from the MinGW64 developers, but now I need
> your help, Richard.  I need you to produce preprocessed versions of
> frame.c, keyboard.c, and print.c, and send them to me.
>
> Do you know how to produce such preprocessed versions?  They need to
> be produced using the exact GCC switches used when these files are
> compiled as part of the build.  Let me know if you need instructions.
>
>
As an alternative, I can provide them.
I have the same install with the same warnings.

Should you want them, they are at this address :
https://drive.google.com/file/d/0BzJyP_aI_ouHOWR6YXZ1LTRiam8/view?usp=sharing

Compilation flags :

gcc  -E -mtune=generic  -I/mingw64/include -DUSE_CRT_DLL=1 -I
/d/source/emacs/build-master/../emacs/nt/inc -Demacs  -I. -I../../emacs/src
-I../lib -I../../emacs/lib  -mtune=generic    -pthread -mms-bitfields
-isystem C:/MSys64/mingw64/include/librsvg-2.0 -isystem
C:/MSys64/mingw64/include/gdk-pixbuf-2.0 -isystem
C:/MSys64/mingw64/include/libpng16 -isystem C:/MSys64/mingw64/include/cairo
-isystem C:/MSys64/mingw64/include/pixman-1 -isystem
C:/MSys64/mingw64/include -isystem C:/MSys64/mingw64/include/freetype2
-isystem C:/MSys64/mingw64/include/libpng16 -isystem
C:/MSys64/mingw64/include/harfbuzz -isystem
C:/MSys64/mingw64/include/glib-2.0 -isystem
C:/MSys64/mingw64/lib/glib-2.0/include -isystem C:/MSys64/mingw64/include
-isystem C:/MSys64/mingw64/include/freetype2 -isystem
C:/MSys64/mingw64/include -isystem C:/MSys64/mingw64/include/harfbuzz
-isystem C:/MSys64/mingw64/include/glib-2.0 -isystem
C:/MSys64/mingw64/lib/glib-2.0/include -isystem C:/MSys64/mingw64/include
-isystem C:/MSys64/mingw64/include/libpng16 -isystem
C:/MSys64/mingw64/include -fopenmp -DMAGICKCORE_HDRI_ENABLE=1
-DMAGICKCORE_QUANTUM_DEPTH=16 -D_DLL -D_MT -fopenmp
-DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16 -D_DLL -D_MT
-isystem C:/MSys64/mingw64/include/ImageMagick-7  -isystem
C:/MSys64/mingw64/include/libxml2            -MMD -MF deps/print.d -MP
 -isystem C:/MSys64/mingw64/include -isystem
C:/MSys64/mingw64/include/p11-kit-1    -fno-common -W -Wabi -Waddress
-Waggressive-loop-optimizations -Wall -Wattributes -Wbool-compare
-Wbool-operation -Wbuiltin-declaration-mismatch -Wbuiltin-macro-redefined
-Wcast-align -Wchar-subscripts -Wchkp -Wclobbered -Wcomment -Wcomments
-Wcoverage-mismatch -Wcpp -Wdangling-else -Wdate-time -Wdeprecated
-Wdeprecated-declarations -Wdesignated-init -Wdisabled-optimization
-Wdiscarded-array-qualifiers -Wdiscarded-qualifiers -Wdiv-by-zero
-Wdouble-promotion -Wduplicated-cond -Wduplicate-decl-specifier
-Wempty-body -Wendif-labels -Wenum-compare -Wexpansion-to-defined -Wextra
-Wformat-contains-nul -Wformat-extra-args -Wformat-security
-Wformat-signedness -Wformat-y2k -Wformat-zero-length -Wframe-address
-Wfree-nonheap-object -Whsa -Wignored-attributes -Wignored-qualifiers
-Wimplicit -Wimplicit-function-declaration -Wimplicit-int
-Wincompatible-pointer-types -Winit-self -Wint-conversion
-Wint-in-bool-context -Wint-to-pointer-cast -Winvalid-memory-model
-Winvalid-pch -Wjump-misses-init -Wlogical-not-parentheses -Wlogical-op
-Wmain -Wmaybe-uninitialized -Wmemset-elt-size -Wmemset-transposed-args
-Wmisleading-indentation -Wmissing-braces -Wmissing-declarations
-Wmissing-include-dirs -Wmissing-parameter-type -Wmissing-prototypes
-Wmultichar -Wnarrowing -Wnested-externs -Wnonnull -Wnonnull-compare
-Wnull-dereference -Wodr -Wold-style-declaration -Wold-style-definition
-Wopenmp-simd -Woverflow -Wpacked -Wpacked-bitfield-compat -Wparentheses
-Wpointer-arith -Wpointer-compare -Wpointer-to-int-cast -Wpragmas -Wpsabi
-Wrestrict -Wreturn-local-addr -Wreturn-type -Wscalar-storage-order
-Wsequence-point -Wshift-count-negative -Wshift-count-overflow
-Wshift-negative-value -Wsizeof-array-argument -Wsizeof-pointer-memaccess
-Wstrict-aliasing -Wstrict-prototypes -Wsuggest-attribute=noreturn
-Wsuggest-final-methods -Wsuggest-final-types -Wswitch-bool
-Wswitch-unreachable -Wtautological-compare -Wtrampolines -Wtrigraphs
-Wuninitialized -Wunknown-pragmas -Wunused -Wunused-but-set-parameter
-Wunused-but-set-variable -Wunused-function -Wunused-label
-Wunused-local-typedefs -Wunused-macros -Wunused-result -Wunused-value
-Wunused-variable -Wvarargs -Wvariadic-macros
-Wvector-operation-performance -Wvolatile-register-var -Wwrite-strings
-Walloc-size-larger-than=2147483647 -Warray-bounds=2 -Wformat-truncation=2
-Wimplicit-fallthrough=5 -Wnormalized=nfc -Wshift-overflow=2
-Wstringop-overflow=2 -Wvla-larger-than=4031
-Wno-missing-field-initializers -Wno-override-init -Wno-sign-compare
-Wno-type-limits -Wno-unused-parameter -Wno-format-nonliteral
-Wno-pointer-sign -I/mingw64/include -O3 -g0 -mtune=corei7
-fomit-frame-pointer  ../../emacs/src/frame.c

Fabrice

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