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Mingw64 build warnings #16482

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p5pRT opened this issue Mar 28, 2018 · 5 comments
Open

Mingw64 build warnings #16482

p5pRT opened this issue Mar 28, 2018 · 5 comments

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@p5pRT
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@p5pRT p5pRT commented Mar 28, 2018

Migrated from rt.perl.org#133036 (status was 'open')

Searchable as RT133036$

@p5pRT
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@p5pRT p5pRT commented Mar 28, 2018

From @dur-randir

Created by @dur-randir

While building perl using mingw64 + dmake, I've encountered the
following compilation warnings​:

gcc -c -I.\include -I. -I.. -DWIN32 -DWIN64 -DCONSERVATIVE -DPERLDLL
-DPERL_CORE -s -O2 -fwrapv -fno-strict-aliasing -DPERL_EXTERNAL_GLOB
-DPERL_IS_MINIPERL -omini\globals.o ..\globals.c
In file included from ..\perl.h​:28​:0,
  from ..\globals.c​:32​:
./config.h​:3738​:73​: warning​: excess elements in array initializer
#define LONGDBLINFBYTES 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x80, 0xff, 0x7f, 0x00, 0x00 /**/
  ^
..\perl.h​:6728​:32​: note​: in expansion of macro 'LONGDBLINFBYTES'
INFNAN_U8_NV_DECL PL_inf = { { LONGDBLINFBYTES } };

./config.h​:3739​:91​: note​: (near initialization for 'PL_nan.u8')
#define LONGDBLNANBYTES 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xc0, 0xff, 0xff, 0x00, 0x00 /**/

  ^

gcc -c -I.\include -I. -I.. -DWIN32 -DWIN64 -DCONSERVATIVE -DPERLDLL
-DPERL_CORE -s -O2 -fwrapv -fno-strict-aliasing -DPERL_EXTERNAL_GLOB
-DPERL_IS_MINIPERL -omini\locale.o ..\locale.c
In file included from ..\perl.h​:5300​:0,
  from ..\locale.c​:49​:
..\locale.c​: In function 'S_my_nl_langinfo'​:
..\embed.h​:1638​:25​: warning​: ignoring return value of
'S_save_to_buffer', declared with attribute warn_unused_result
[-Wunused-result]
#define save_to_buffer S_save_to_buffer
..\embed.h​:1638​:25​: note​: in definition of macro 'save_to_buffer'
#define save_to_buffer S_save_to_buffer
  ^~~~~~~~~~~~~~~~

gcc -c -s -O2 -DWIN32 -DWIN64 -DCONSERVATIVE
-DPERL_TEXTMODE_SCRIPTS -fwrapv -fno-strict-aliasing -mms-bitfields
-DPERLDLL -s -O2 -DVERSION=\"3.39\" -DXS_VERSION=\"3.39\"
"-I..\.
lib\CORE" RealPPPort.c
In file included from RealPPPort.xs​:31​:0​:
RealPPPort.xs​: In function 'XS_Devel__PPPort_ptrtests'​:
..\..\lib\CORE/perl.h​:1729​:26​: warning​: cast from pointer to integer
of different size [-Wpointer-to-int-cast]
# define INT2PTR(any,d) (any)(d)
  ^
..\..\lib\CORE/perl.h​:1742​:21​: note​: in expansion of macro 'INT2PTR'
# define PTR2ul(p) INT2PTR(unsigned long,p)
  ^~~~~~~
RealPPPort.xs​:1650​:27​: note​: in expansion of macro 'PTR2ul'
  RETVAL += PTR2ul(p) != 0UL ? 2 : 0;
  ^

gcc -c -s -O2 -DWIN32 -DWIN64 -DCONSERVATIVE
-DPERL_TEXTMODE_SCRIPTS -fwrapv -fno-strict-aliasing -mms-bitfields
-DPERLDLL -s -O2 -DVERSION=\"3.06\" -DXS_VERSION=\"3
lib\CORE" Storable.c
Storable.xs​: In function 'known_class'​:
Storable.xs​:570​:31​: warning​: cast from pointer to integer of different
size [-Wpointer-to-int-cast]
#define LOW_32BITS(x) ((I32) ((unsigned long) (x) & 0xffffffffUL))
  ^
Storable.xs​:2309​:21​: note​: in expansion of macro 'LOW_32BITS'
  *classnum = LOW_32BITS(*svh);
  ^
Storable.xs​: In function 'store_scalar'​:
Storable.xs​:644​:6​: warning​: cast from pointer to integer of different
size [-Wpointer-to-int-cast]
  ((unsigned long) (x) == trunc_int(x))
  ^
Storable.xs​:804​:13​: note​: in expansion of macro 'int_aligned'
  if (int_aligned(mptr)) \
  ^~~~~~~~~~~
Storable.xs​:1028​:13​: note​: in expansion of macro 'MBUF_PUTINT'
  MBUF_PUTINT(x); \
  ^~~~~~~~~~~
Storable.xs​:2535​:13​: note​: in expansion of macro 'WRITE_I32'
  WRITE_I32(niv);
  ^
Storable.xs​:644​:6​: warning​: cast from pointer to integer of different
size [-Wpointer-to-int-cast]
  ((unsigned long) (x) == trunc_int(x))
  ^
Storable.xs​:804​:13​: note​: in expansion of macro 'int_aligned'
  if (int_aligned(mptr)) \
  ^~~~~~~~~~~
Storable.xs​:1051​:17​: note​: in expansion of macro 'MBUF_PUTINT'
  MBUF_PUTINT(y); \
  ^~~~~~~~~~~
Storable.xs​:1126​:13​: note​: in expansion of macro 'WLEN'
  WLEN(ilen); \
  ^~~~
Storable.xs​:2603​:13​: note​: in expansion of macro 'STORE_PV_LEN'
  STORE_PV_LEN((const char *)mg->mg_ptr,
  ^
Storable.xs​:644​:6​: warning​: cast from pointer to integer of different
size [-Wpointer-to-int-cast]
  ((unsigned long) (x) == trunc_int(x))
  ^
Storable.xs​:804​:13​: note​: in expansion of macro 'int_aligned'
  if (int_aligned(mptr)) \
  ^~~~~~~~~~~
Storable.xs​:1051​:17​: note​: in expansion of macro 'MBUF_PUTINT'
  MBUF_PUTINT(y); \
  ^~~~~~~~~~~
Storable.xs​:1126​:13​: note​: in expansion of macro 'WLEN'
  WLEN(ilen); \
  ^~~~
Storable.xs​:304​:32​: note​: in expansion of macro 'STORE_PV_LEN'
#define STORE_UTF8STR(pv, len) STORE_PV_LEN(pv, len, SX_UTF8STR, SX_LUTF8STR)
  ^~~~~~~~~~~~
Storable.xs​:2610​:13​: note​: in expansion of macro 'STORE_UTF8STR'
  STORE_UTF8STR(pv, wlen);
  ^
Storable.xs​:642​:23​: warning​: cast from pointer to integer of different
size [-Wpointer-to-int-cast]
  ((unsigned long) ((unsigned long) (x) & ~(sizeof(int)-1)))
  ^
Storable.xs​:644​:29​: note​: in expansion of macro 'trunc_int'
  ((unsigned long) (x) == trunc_int(x))
  ^~~~~~~~~
Storable.xs​:804​:13​: note​: in expansion of macro 'int_aligned'
  if (int_aligned(mptr)) \
  ^~~~~~~~~~~
Storable.xs​:1051​:17​: note​: in expansion of macro 'MBUF_PUTINT'
  MBUF_PUTINT(y); \
  ^~~~~~~~~~~
Storable.xs​:1126​:13​: note​: in expansion of macro 'WLEN'
  WLEN(ilen); \
  ^~~~
Storable.xs​:1131​:31​: note​: in expansion of macro 'STORE_PV_LEN'
#define STORE_SCALAR(pv, len) STORE_PV_LEN(pv, len, SX_SCALAR, SX_LSCALAR)
  ^~~~~~~~~~~~
Storable.xs​:2612​:13​: note​: in expansion of macro 'STORE_SCALAR'
  STORE_SCALAR(pv, wlen);
  ^
Storable.xs​: In function 'old_retrieve_hash'​:
Storable.xs​:644​:6​: warning​: cast from pointer to integer of different
size [-Wpointer-to-int-cast]
  ((unsigned long) (x) == trunc_int(x))
  ^
Storable.xs​:742​:17​: note​: in expansion of macro 'int_aligned'
  if (int_aligned(mptr)) \
  ^~~~~~~~~~~
Storable.xs​:1176​:13​: note​: in expansion of macro 'MBUF_GETINT'
  MBUF_GETINT(x); \
  ^~~~~~~~~~~
Storable.xs​:6930​:5​: note​: in expansion of macro 'RLEN'
  RLEN(len);

Note that for Storable, I've copied just some instances of each
warning type - they all seem to have the same cause, so I saw no
additional information in copying them all.

Generating a dmake-style Makefile
Writing Makefile for Errno
"..\..\miniperl.exe" "-I..\..\lib" Errno_pm.PL Errno.pm
In file included from includes.c​:4​:0​:
c​:/MinGW/mingw64/lib/gcc/x86_64-w64-mingw32/7.3.0/include/avx5124vnniwintrin.h​:25​:3​:
error​: #error "Never use <avx5124vnniwintrin.h> directly; include
<x86intrin.h> instead."
# error "Never use <avx5124vnniwintrin.h> directly; include
<x86intrin.h> instead."

perlhost.h​: In function 'CPerlHost* IPerlProc2Host(IPerlProc*)'​:
perlhost.h​:230​:63​: warning​: offsetof within non-standard-layout type
'CPerlHost' is undefined [-Winvalid-offsetof]
#define STRUCT2RAWPTR(x, y) (CPerlHost*)(((LPBYTE)x)-offsetof(CPerlHost, y))
  ^
perlhost.h​:237​:38​: note​: in expansion of macro 'STRUCT2RAWPTR'
#define STRUCT2PTR(x, y) CheckInterp(STRUCT2RAWPTR(x, y))
  ^~~~~~~~~~~~~
perlhost.h​:284​:12​: note​: in expansion of macro 'STRUCT2PTR'
  return STRUCT2PTR(piPerl, m_hostperlProc);
  ^

Perl Info

Flags:
    category=core
    severity=low

Site configuration information for perl 5.27.10:

Configured by dur-randir at Wed Mar 28 01:45:22 2018.

Summary of my perl5 (revision 5 version 27 subversion 10) configuration:

  Platform:
    osname=MSWin32
    osvers=6.1.7601
    archname=MSWin32-x64-perlio
    uname=''
    config_args='undef'
    hint=recommended
    useposix=true
    d_sigaction=undef
    useithreads=undef
    usemultiplicity=undef
    use64bitint=define
    use64bitall=undef
    uselongdouble=undef
    usemymalloc=n
    default_inc_excludes_dot=define
    bincompat5005=undef
  Compiler:
    cc='gcc'
    ccflags =' -s -O2 -DWIN32 -DWIN64 -DCONSERVATIVE
-DPERL_TEXTMODE_SCRIPTS -fwrapv -fno-strict-aliasing -mms-bitfields'
    optimize='-s -O2'
    cppflags='-DWIN32'
    ccversion=''
    gccversion='7.3.0'
    gccosandvers=''
    intsize=4
    longsize=4
    ptrsize=8
    doublesize=8
    byteorder=12345678
    doublekind=3
    d_longlong=define
    longlongsize=8
    d_longdbl=define
    longdblsize=16
    longdblkind=3
    ivtype='long long'
    ivsize=8
    nvtype='double'
    nvsize=8
    Off_t='long long'
    lseeksize=8
    alignbytes=8
    prototype=define
  Linker and Libraries:
    ld='g++'
    ldflags ='-s -L"c:\perl\lib\CORE" -L"C:\MinGW\mingw64\lib"'
    libpth=C:\MinGW\mingw64\lib
    libs=-lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool -lcomdlg32
-ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid -lws2_32
-lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32
    perllibs=-lmoldname -lkernel32 -luser32 -lgdi32 -lwinspool
-lcomdlg32 -ladvapi32 -lshell32 -lole32 -loleaut32 -lnetapi32 -luuid
-lws2_32 -lmpr -lwinmm -lversion -lodbc32 -lodbccp32 -lcomctl32
    libc=
    so=dll
    useshrplib=true
    libperl=libperl527.a
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_win32.xs
    dlext=dll
    d_dlsymun=undef
    ccdlflags=' '
    cccdlflags=' '
    lddlflags='-mdll -s -L"c:\perl\lib\CORE" -L"C:\MinGW\mingw64\lib"'



@INC for perl 5.27.10:
    C:\perl-git-false\lib
    C:\perl-git-false\cpan\AutoLoader\lib
    C:\perl-git-false\dist\Carp\lib
    C:\perl-git-false\dist\PathTools
    C:\perl-git-false\dist\PathTools\lib
    C:\perl-git-false\cpan\ExtUtils-Install\lib
    C:\perl-git-false\cpan\ExtUtils-MakeMaker\lib
    C:\perl-git-false\cpan\ExtUtils-Manifest\lib
    C:\perl-git-false\cpan\File-Path\lib
    C:\perl-git-false\ext\re
    C:\perl-git-false\dist\Term-ReadLine\lib
    C:\perl-git-false\dist\Exporter\lib
    C:\perl-git-false\ext\File-Find\lib
    C:\perl-git-false\cpan\Text-Tabs\lib
    C:\perl-git-false\dist\constant\lib
    C:\perl-git-false\cpan\version\lib
    C:\perl-git-false\cpan\Text-ParseWords\lib
    C:\perl-git-false\dist\ExtUtils-ParseXS\lib
    C:\perl-git-false\cpan\Getopt-Long\lib
    C:\perl-git-false\cpan\parent\lib
    C:\perl-git-false\cpan\ExtUtils-Constant\lib


Environment for perl 5.27.10:
    HOME (unset)
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\perl\bin;C:\Program
Files (x86)\AMD\ATI.ACE\Core-Static;C:\Program Files (x86)\Windows
Kits\10\Windows Performance Toolkit\;C:\Program Files\Microsoft SQL
Server\110\Tools\Binn\;C:\Program Files (x86)\Microsoft
SDKs\TypeScript\1.0\;C:\Program Files\Microsoft SQL
Server\120\Tools\Binn\;C:\Program
Files\Git\cmd;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program
Files\PowerShell\6.0.1\;:c:\mingw\bin;c:\mingw\bin;c:\MinGW\mingw64\bin;c:\dmake
    PERL_BADLANG (unset)
    SHELL (unset)

@p5pRT
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@p5pRT p5pRT commented Apr 9, 2018

From @tonycoz

On Tue, 27 Mar 2018 17​:41​:14 -0700, randir wrote​:

While building perl using mingw64 + dmake, I've encountered the
following compilation warnings​:

This should be fixed by 59bc72e.

Tony

@p5pRT
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@p5pRT p5pRT commented Apr 9, 2018

The RT System itself - Status changed from 'new' to 'open'

@p5pRT
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@p5pRT p5pRT commented Apr 10, 2018

From @dur-randir

On Sun, 08 Apr 2018 21​:03​:52 -0700, tonyc wrote​:

This should be fixed by 59bc72e.

The Storable ones are gone, but all other are still present.

@khwilliamson
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@khwilliamson khwilliamson commented Apr 17, 2022

Is this fixed?

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