Re: [Mingw-w64-public] What is the purpose of intrin.h?

2013-07-02 Thread Jacek Caban 
On 07/02/13 01:48, dw wrote:
 I may apply the patch and let my cron jobs run it through Mozilla
 sources over night if you like. In the past, those caught quite a few
 problems with intrin.h.
 That would be great.  I've spent a bit more time on in today, and will 
 probably give it a final look in a few hours.  The only thing I've 
 changed so far is comments.  In case you hadn't noticed, I'm a big 
 believer in comments.

 I'm not sure when over night is where you are, but if you get the 
 chance, this would be helpful.

Done, the compilation went well.

Cheers,
Jacek


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[Mingw-w64-public] [PATCH v2] ___lc_codepage_func: use correct name and use emul only for 32bits msvcrt

2013-07-02 Thread Rafaël Carré 
based on a patch by Jacek
---
 mingw-w64-crt/lib32/msvcrt.def.in   | 2 +-
 mingw-w64-crt/misc/btowc.c  | 2 +-
 mingw-w64-crt/misc/lc_locale_func.c | 8 
 mingw-w64-crt/misc/mb_wc_common.h   | 2 +-
 mingw-w64-crt/misc/mbrtowc.c| 6 +++---
 mingw-w64-crt/misc/wcrtomb.c| 4 ++--
 mingw-w64-crt/misc/wcstof.c | 2 +-
 mingw-w64-crt/misc/wcstold.c| 2 +-
 mingw-w64-crt/misc/wctob.c  | 2 +-
 9 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/mingw-w64-crt/lib32/msvcrt.def.in 
b/mingw-w64-crt/lib32/msvcrt.def.in
index ff352f1..ad8ec29 100644
--- a/mingw-w64-crt/lib32/msvcrt.def.in
+++ b/mingw-w64-crt/lib32/msvcrt.def.in
@@ -797,7 +797,7 @@ _wcstoi64
 _wcstoui64
 _wctype
 _wtof
-___lc_codepage_func
+___lc_codepage_func DATA ; provided by emu
 ___lc_collate_cp_func
 ___lc_handle_func
 ___mb_cur_max_func
diff --git a/mingw-w64-crt/misc/btowc.c b/mingw-w64-crt/misc/btowc.c
index aaabc0c..026b491 100644
--- a/mingw-w64-crt/misc/btowc.c
+++ b/mingw-w64-crt/misc/btowc.c
@@ -19,7 +19,7 @@ wint_t btowc (int c)
 {
   unsigned char ch = c;
   wchar_t wc = WEOF;
-  MultiByteToWideChar (__lc_codepage_func(), MB_ERR_INVALID_CHARS,
+  MultiByteToWideChar (___lc_codepage_func(), MB_ERR_INVALID_CHARS,
   (char*)ch, 1, wc, 1);
   return wc;
 }
diff --git a/mingw-w64-crt/misc/lc_locale_func.c 
b/mingw-w64-crt/misc/lc_locale_func.c
index 4e0fd02..3aebcdc 100644
--- a/mingw-w64-crt/misc/lc_locale_func.c
+++ b/mingw-w64-crt/misc/lc_locale_func.c
@@ -6,7 +6,7 @@
 #include mb_wc_common.h
 
 static unsigned int *msvcrt__lc_codepage;
-static unsigned int __cdecl msvcrt__lc_codepage_func(void)
+static unsigned int __cdecl msvcrt___lc_codepage_func(void)
 {
 return *msvcrt__lc_codepage;
 }
@@ -19,7 +19,7 @@ static unsigned int __cdecl setlocale_codepage_hack(void)
 }
 
 static unsigned int __cdecl init_codepage_func(void);
-unsigned int (__cdecl *__MINGW_IMP_SYMBOL(__lc_codepage_func))(void) = 
init_codepage_func;
+unsigned int (__cdecl *__MINGW_IMP_SYMBOL(___lc_codepage_func))(void) = 
init_codepage_func;
 
 static unsigned int __cdecl init_codepage_func(void)
 {
@@ -31,12 +31,12 @@ static unsigned int __cdecl init_codepage_func(void)
 if(!func) {
 msvcrt__lc_codepage = (unsigned int*)GetProcAddress(msvcrt, 
__lc_codepage);
 if(msvcrt__lc_codepage)
-func = msvcrt__lc_codepage_func;
+func = msvcrt___lc_codepage_func;
 }
 }
 
 if(!func)
 func = setlocale_codepage_hack;
 
-return (__MINGW_IMP_SYMBOL(__lc_codepage_func) = func)();
+return (__MINGW_IMP_SYMBOL(___lc_codepage_func) = func)();
 }
diff --git a/mingw-w64-crt/misc/mb_wc_common.h 
b/mingw-w64-crt/misc/mb_wc_common.h
index c95243b..5a40013 100644
--- a/mingw-w64-crt/misc/mb_wc_common.h
+++ b/mingw-w64-crt/misc/mb_wc_common.h
@@ -6,4 +6,4 @@
 
 #include _mingw.h
 
-_CRTIMP unsigned int __cdecl __lc_codepage_func(void);
+_CRTIMP unsigned int __cdecl ___lc_codepage_func(void);
diff --git a/mingw-w64-crt/misc/mbrtowc.c b/mingw-w64-crt/misc/mbrtowc.c
index df4d318..5cd106e 100644
--- a/mingw-w64-crt/misc/mbrtowc.c
+++ b/mingw-w64-crt/misc/mbrtowc.c
@@ -101,7 +101,7 @@ mbrtowc (wchar_t * __restrict__ pwc, const char * 
__restrict__ s,
   wchar_t* dst = pwc ? pwc : byte_bucket;
 
   return (size_t) __mbrtowc_cp (dst, s, n, ps ? ps : internal_mbstate,
-   __lc_codepage_func(), MB_CUR_MAX);
+   ___lc_codepage_func(), MB_CUR_MAX);
 }
 
 
@@ -113,7 +113,7 @@ mbsrtowcs (wchar_t* __restrict__ dst,  const char ** 
__restrict__ src,
   size_t n = 0;
   static mbstate_t internal_mbstate = 0;
   mbstate_t* internal_ps = ps ? ps : internal_mbstate;
-  const unsigned int cp = __lc_codepage_func();
+  const unsigned int cp = ___lc_codepage_func();
   const unsigned int mb_max = MB_CUR_MAX;
 
   if (src == NULL || *src == NULL) /* undefined behavior */
@@ -156,5 +156,5 @@ mbrlen (const char * __restrict__ s, size_t n,
   static mbstate_t s_mbstate = 0;
   wchar_t byte_bucket = 0;
   return __mbrtowc_cp (byte_bucket, s, n, (ps) ? ps : s_mbstate,
-  __lc_codepage_func(), MB_CUR_MAX);
+  ___lc_codepage_func(), MB_CUR_MAX);
 }
diff --git a/mingw-w64-crt/misc/wcrtomb.c b/mingw-w64-crt/misc/wcrtomb.c
index aae58ea..299f67b 100644
--- a/mingw-w64-crt/misc/wcrtomb.c
+++ b/mingw-w64-crt/misc/wcrtomb.c
@@ -49,7 +49,7 @@ wcrtomb (char *dst, wchar_t wc, mbstate_t * __UNUSED_PARAM 
(ps))
 {
   char byte_bucket [MB_LEN_MAX];
   char* tmp_dst = dst ? dst : byte_bucket[0];
-  return (size_t)__wcrtomb_cp (tmp_dst, wc, __lc_codepage_func(),
+  return (size_t)__wcrtomb_cp (tmp_dst, wc, ___lc_codepage_func(),
   MB_CUR_MAX);
 }
 
@@ -58,7 +58,7 @@ size_t wcsrtombs (char *dst, const wchar_t **src, size_t len,
 {
   int ret = 0;
   size_t n = 0;
-  const unsigned int cp =

[Mingw-w64-public] [PATCH v3] ___lc_codepage_func: use correct name and link emul only for 32bits msvcrt

2013-07-02 Thread Rafaël Carré 
based on a patch by Jacek
---
 mingw-w64-crt/Makefile.am   | 6 --
 mingw-w64-crt/lib32/msvcrt.def.in   | 2 +-
 mingw-w64-crt/misc/btowc.c  | 2 +-
 mingw-w64-crt/misc/lc_locale_func.c | 8 
 mingw-w64-crt/misc/mb_wc_common.h   | 2 +-
 mingw-w64-crt/misc/mbrtowc.c| 6 +++---
 mingw-w64-crt/misc/wcrtomb.c| 4 ++--
 mingw-w64-crt/misc/wcstof.c | 2 +-
 mingw-w64-crt/misc/wcstold.c| 2 +-
 mingw-w64-crt/misc/wctob.c  | 2 +-
 10 files changed, 19 insertions(+), 17 deletions(-)

diff --git a/mingw-w64-crt/Makefile.am b/mingw-w64-crt/Makefile.am
index d9cd436..82b478f 100644
--- a/mingw-w64-crt/Makefile.am
+++ b/mingw-w64-crt/Makefile.am
@@ -119,7 +119,6 @@ src_libws2_32=libsrc/ws2_32.c \
 
 src_msvcrt=\
   misc/invalid_parameter_handler.c \
-  misc/lc_locale_func.c \
   misc/output_format.c \
   secapi/_access_s.c \
   secapi/_cgets_s.c \
@@ -156,6 +155,9 @@ src_msvcrt=\
   secapi/vsprintf_s.c \
   secapi/wmemcpy_s.c
 
+src_msvcrt32=
+  $(src_msvcrt) \
+  misc/lc_locale_func.c
 
 src_libmingwex=\
   crt/dllentry.ccrt/dllmain.c \
@@ -343,7 +345,7 @@ lib32_libkernel32_a_AR = $(DTLIB32)  $(AR) $(ARFLAGS)
 lib32_libkernel32_a_CPPFLAGS=$(CPPFLAGS32) $(extra_include) $(AM_CPPFLAGS)
 
 lib32_LIBRARIES += lib32/libmsvcrt.a
-lib32_libmsvcrt_a_SOURCES = $(src_msvcrt) lib32/msvcrt.def.in
+lib32_libmsvcrt_a_SOURCES = $(src_msvcrt32) lib32/msvcrt.def.in
 lib32_libmsvcrt_a_AR = $(DTDEF32) lib32/msvcrt.def  $(AR) $(ARFLAGS)
 lib32_libmsvcrt_a_CPPFLAGS=$(CPPFLAGS32) -D__LIBMSVCRT__ $(extra_include) 
$(sysincludes)
 EXTRA_lib32_libmsvcrt_a_DEPENDENCIES=lib32/msvcrt.def
diff --git a/mingw-w64-crt/lib32/msvcrt.def.in 
b/mingw-w64-crt/lib32/msvcrt.def.in
index ff352f1..ad8ec29 100644
--- a/mingw-w64-crt/lib32/msvcrt.def.in
+++ b/mingw-w64-crt/lib32/msvcrt.def.in
@@ -797,7 +797,7 @@ _wcstoi64
 _wcstoui64
 _wctype
 _wtof
-___lc_codepage_func
+___lc_codepage_func DATA ; provided by emu
 ___lc_collate_cp_func
 ___lc_handle_func
 ___mb_cur_max_func
diff --git a/mingw-w64-crt/misc/btowc.c b/mingw-w64-crt/misc/btowc.c
index aaabc0c..026b491 100644
--- a/mingw-w64-crt/misc/btowc.c
+++ b/mingw-w64-crt/misc/btowc.c
@@ -19,7 +19,7 @@ wint_t btowc (int c)
 {
   unsigned char ch = c;
   wchar_t wc = WEOF;
-  MultiByteToWideChar (__lc_codepage_func(), MB_ERR_INVALID_CHARS,
+  MultiByteToWideChar (___lc_codepage_func(), MB_ERR_INVALID_CHARS,
   (char*)ch, 1, wc, 1);
   return wc;
 }
diff --git a/mingw-w64-crt/misc/lc_locale_func.c 
b/mingw-w64-crt/misc/lc_locale_func.c
index 4e0fd02..3aebcdc 100644
--- a/mingw-w64-crt/misc/lc_locale_func.c
+++ b/mingw-w64-crt/misc/lc_locale_func.c
@@ -6,7 +6,7 @@
 #include mb_wc_common.h
 
 static unsigned int *msvcrt__lc_codepage;
-static unsigned int __cdecl msvcrt__lc_codepage_func(void)
+static unsigned int __cdecl msvcrt___lc_codepage_func(void)
 {
 return *msvcrt__lc_codepage;
 }
@@ -19,7 +19,7 @@ static unsigned int __cdecl setlocale_codepage_hack(void)
 }
 
 static unsigned int __cdecl init_codepage_func(void);
-unsigned int (__cdecl *__MINGW_IMP_SYMBOL(__lc_codepage_func))(void) = 
init_codepage_func;
+unsigned int (__cdecl *__MINGW_IMP_SYMBOL(___lc_codepage_func))(void) = 
init_codepage_func;
 
 static unsigned int __cdecl init_codepage_func(void)
 {
@@ -31,12 +31,12 @@ static unsigned int __cdecl init_codepage_func(void)
 if(!func) {
 msvcrt__lc_codepage = (unsigned int*)GetProcAddress(msvcrt, 
__lc_codepage);
 if(msvcrt__lc_codepage)
-func = msvcrt__lc_codepage_func;
+func = msvcrt___lc_codepage_func;
 }
 }
 
 if(!func)
 func = setlocale_codepage_hack;
 
-return (__MINGW_IMP_SYMBOL(__lc_codepage_func) = func)();
+return (__MINGW_IMP_SYMBOL(___lc_codepage_func) = func)();
 }
diff --git a/mingw-w64-crt/misc/mb_wc_common.h 
b/mingw-w64-crt/misc/mb_wc_common.h
index c95243b..5a40013 100644
--- a/mingw-w64-crt/misc/mb_wc_common.h
+++ b/mingw-w64-crt/misc/mb_wc_common.h
@@ -6,4 +6,4 @@
 
 #include _mingw.h
 
-_CRTIMP unsigned int __cdecl __lc_codepage_func(void);
+_CRTIMP unsigned int __cdecl ___lc_codepage_func(void);
diff --git a/mingw-w64-crt/misc/mbrtowc.c b/mingw-w64-crt/misc/mbrtowc.c
index df4d318..5cd106e 100644
--- a/mingw-w64-crt/misc/mbrtowc.c
+++ b/mingw-w64-crt/misc/mbrtowc.c
@@ -101,7 +101,7 @@ mbrtowc (wchar_t * __restrict__ pwc, const char * 
__restrict__ s,
   wchar_t* dst = pwc ? pwc : byte_bucket;
 
   return (size_t) __mbrtowc_cp (dst, s, n, ps ? ps : internal_mbstate,
-   __lc_codepage_func(), MB_CUR_MAX);
+   ___lc_codepage_func(), MB_CUR_MAX);
 }
 
 
@@ -113,7 +113,7 @@ mbsrtowcs (wchar_t* __restrict__ dst,  const char ** 
__restrict__ src,
   size_t n = 0;
   static mbstate_t internal_mbstate = 0;
   mbstate_t* internal_ps = ps ? ps : internal_mbstate;
-  const unsigned int cp = __lc_codepage_func();
+  const

Re: [Mingw-w64-public] [PATCH v3] ___lc_codepage_func: use correct name and link emul only for 32bits msvcrt

2013-07-02 Thread Kai Tietz 
Patch is ok.

Thanks,
Kai

2013/7/2 Rafaël Carré fun...@videolan.org:
 based on a patch by Jacek
 ---
  mingw-w64-crt/Makefile.am   | 6 --
  mingw-w64-crt/lib32/msvcrt.def.in   | 2 +-
  mingw-w64-crt/misc/btowc.c  | 2 +-
  mingw-w64-crt/misc/lc_locale_func.c | 8 
  mingw-w64-crt/misc/mb_wc_common.h   | 2 +-
  mingw-w64-crt/misc/mbrtowc.c| 6 +++---
  mingw-w64-crt/misc/wcrtomb.c| 4 ++--
  mingw-w64-crt/misc/wcstof.c | 2 +-
  mingw-w64-crt/misc/wcstold.c| 2 +-
  mingw-w64-crt/misc/wctob.c  | 2 +-
  10 files changed, 19 insertions(+), 17 deletions(-)

 diff --git a/mingw-w64-crt/Makefile.am b/mingw-w64-crt/Makefile.am
 index d9cd436..82b478f 100644
 --- a/mingw-w64-crt/Makefile.am
 +++ b/mingw-w64-crt/Makefile.am
 @@ -119,7 +119,6 @@ src_libws2_32=libsrc/ws2_32.c \

  src_msvcrt=\
misc/invalid_parameter_handler.c \
 -  misc/lc_locale_func.c \
misc/output_format.c \
secapi/_access_s.c \
secapi/_cgets_s.c \
 @@ -156,6 +155,9 @@ src_msvcrt=\
secapi/vsprintf_s.c \
secapi/wmemcpy_s.c

 +src_msvcrt32=
 +  $(src_msvcrt) \
 +  misc/lc_locale_func.c

  src_libmingwex=\
crt/dllentry.ccrt/dllmain.c \
 @@ -343,7 +345,7 @@ lib32_libkernel32_a_AR = $(DTLIB32)  $(AR) $(ARFLAGS)
  lib32_libkernel32_a_CPPFLAGS=$(CPPFLAGS32) $(extra_include) $(AM_CPPFLAGS)

  lib32_LIBRARIES += lib32/libmsvcrt.a
 -lib32_libmsvcrt_a_SOURCES = $(src_msvcrt) lib32/msvcrt.def.in
 +lib32_libmsvcrt_a_SOURCES = $(src_msvcrt32) lib32/msvcrt.def.in
  lib32_libmsvcrt_a_AR = $(DTDEF32) lib32/msvcrt.def  $(AR) $(ARFLAGS)
  lib32_libmsvcrt_a_CPPFLAGS=$(CPPFLAGS32) -D__LIBMSVCRT__ $(extra_include) 
 $(sysincludes)
  EXTRA_lib32_libmsvcrt_a_DEPENDENCIES=lib32/msvcrt.def
 diff --git a/mingw-w64-crt/lib32/msvcrt.def.in 
 b/mingw-w64-crt/lib32/msvcrt.def.in
 index ff352f1..ad8ec29 100644
 --- a/mingw-w64-crt/lib32/msvcrt.def.in
 +++ b/mingw-w64-crt/lib32/msvcrt.def.in
 @@ -797,7 +797,7 @@ _wcstoi64
  _wcstoui64
  _wctype
  _wtof
 -___lc_codepage_func
 +___lc_codepage_func DATA ; provided by emu
  ___lc_collate_cp_func
  ___lc_handle_func
  ___mb_cur_max_func
 diff --git a/mingw-w64-crt/misc/btowc.c b/mingw-w64-crt/misc/btowc.c
 index aaabc0c..026b491 100644
 --- a/mingw-w64-crt/misc/btowc.c
 +++ b/mingw-w64-crt/misc/btowc.c
 @@ -19,7 +19,7 @@ wint_t btowc (int c)
  {
unsigned char ch = c;
wchar_t wc = WEOF;
 -  MultiByteToWideChar (__lc_codepage_func(), MB_ERR_INVALID_CHARS,
 +  MultiByteToWideChar (___lc_codepage_func(), MB_ERR_INVALID_CHARS,
(char*)ch, 1, wc, 1);
return wc;
  }
 diff --git a/mingw-w64-crt/misc/lc_locale_func.c 
 b/mingw-w64-crt/misc/lc_locale_func.c
 index 4e0fd02..3aebcdc 100644
 --- a/mingw-w64-crt/misc/lc_locale_func.c
 +++ b/mingw-w64-crt/misc/lc_locale_func.c
 @@ -6,7 +6,7 @@
  #include mb_wc_common.h

  static unsigned int *msvcrt__lc_codepage;
 -static unsigned int __cdecl msvcrt__lc_codepage_func(void)
 +static unsigned int __cdecl msvcrt___lc_codepage_func(void)
  {
  return *msvcrt__lc_codepage;
  }
 @@ -19,7 +19,7 @@ static unsigned int __cdecl setlocale_codepage_hack(void)
  }

  static unsigned int __cdecl init_codepage_func(void);
 -unsigned int (__cdecl *__MINGW_IMP_SYMBOL(__lc_codepage_func))(void) = 
 init_codepage_func;
 +unsigned int (__cdecl *__MINGW_IMP_SYMBOL(___lc_codepage_func))(void) = 
 init_codepage_func;

  static unsigned int __cdecl init_codepage_func(void)
  {
 @@ -31,12 +31,12 @@ static unsigned int __cdecl init_codepage_func(void)
  if(!func) {
  msvcrt__lc_codepage = (unsigned int*)GetProcAddress(msvcrt, 
 __lc_codepage);
  if(msvcrt__lc_codepage)
 -func = msvcrt__lc_codepage_func;
 +func = msvcrt___lc_codepage_func;
  }
  }

  if(!func)
  func = setlocale_codepage_hack;

 -return (__MINGW_IMP_SYMBOL(__lc_codepage_func) = func)();
 +return (__MINGW_IMP_SYMBOL(___lc_codepage_func) = func)();
  }
 diff --git a/mingw-w64-crt/misc/mb_wc_common.h 
 b/mingw-w64-crt/misc/mb_wc_common.h
 index c95243b..5a40013 100644
 --- a/mingw-w64-crt/misc/mb_wc_common.h
 +++ b/mingw-w64-crt/misc/mb_wc_common.h
 @@ -6,4 +6,4 @@

  #include _mingw.h

 -_CRTIMP unsigned int __cdecl __lc_codepage_func(void);
 +_CRTIMP unsigned int __cdecl ___lc_codepage_func(void);
 diff --git a/mingw-w64-crt/misc/mbrtowc.c b/mingw-w64-crt/misc/mbrtowc.c
 index df4d318..5cd106e 100644
 --- a/mingw-w64-crt/misc/mbrtowc.c
 +++ b/mingw-w64-crt/misc/mbrtowc.c
 @@ -101,7 +101,7 @@ mbrtowc (wchar_t * __restrict__ pwc, const char * 
 __restrict__ s,
wchar_t* dst = pwc ? pwc : byte_bucket;

return (size_t) __mbrtowc_cp (dst, s, n, ps ? ps : internal_mbstate,
 -   __lc_codepage_func(), MB_CUR_MAX);
 +   ___lc_codepage_func(), MB_CUR_MAX);
  }


 @@ -113,7 +113,7 @@ mbsrtowcs (wchar_t* __restrict__ dst,  const char **

Re: [Mingw-w64-public] OpenGL headers

2013-07-02 Thread Christer Solskogen 
On 01.07.2013 16:02, LRN wrote:
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1

 mingw-w64 should supply GL headers from [1].
 Specifically - GL/glext.h


Pardon my french, but why should mingw-w64 supply them?

-- 
chs



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Re: [Mingw-w64-public] OpenGL headers

2013-07-02 Thread LRN 
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

On 03.07.2013 00:43, Christer Solskogen wrote:
 On 01.07.2013 16:02, LRN wrote:

 mingw-w64 should supply GL headers from [1].
 Specifically - GL/glext.h

 
 Pardon my french, but why should mingw-w64 supply them?
 
Good question.

A) Because MinGW.org supplies them
B) Because MinGW-W64 supplies other GL headers already. Those are not
sufficient for all uses, however.
C) Because MinGW-W64 supplies a DirectX SDK. Why not OpenGL then?

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[Mingw-w64-public] MinGW-w64 (64-bit/POSIX/SEH) Based on GCC 4.8.0 Regression with -O3 flag (Spotted on QtCore 4.8.5)

2013-07-02 Thread Haroogan 

Hello,

The problem is as follows.
Building Qt 4.8.5 with x64-4.8.0-release-posix-seh-rev2 
http://sourceforge.net/projects/mingwbuilds/files/host-windows/releases/4.8.0/64-bit/threads-posix/seh/x64-4.8.0-release-posix-seh-rev2.7z/download 
(from the MinGW-builds project) distribution and supplying -O3 
optimization flag results in QtCore4.dll crashing very frequently 
(almost always).
Rebuilding QtCore4.dll with -O2 optimization flag immediately solves the 
issue.
Of course the debug variant QtCored4.dll works just fine (as only -g is 
supplied).

Please, look into it.
In particular, does the issue show up for the newest 4.8.1 releases?
If not, then I guess we shouldn't worry much as it is fixed, otherwise 
it should definitely be investigated.

Currently, I haven't time to try 4.8.1 out myself.
Why do I consider it as regression?
Obviously because it was not the case with MinGW-w64 based on GCC 4.7.1.

Kind regards,
Haroogan

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Re: [Mingw-w64-public] MinGW-w64 (64-bit/POSIX/SEH) Based on GCC 4.8.0 Regression with -O3 flag (Spotted on QtCore 4.8.5)

2013-07-02 Thread Alexey Pavlov 
This is known problem. See
https://bugreports.qt-project.org/browse/QTBUG-29099. It for Qt5 but
for Qt4 is the same. You can't now use -O3 with mingw toolchains based
on gcc-4.7.3+.

Regards,
Alexey.

2013/7/3 Haroogan haroo...@gmail.com:
 Hello,


 The problem is as follows.
 Building Qt 4.8.5 with x64-4.8.0-release-posix-seh-rev2 (from the
 MinGW-builds project) distribution and supplying -O3 optimization flag
 results in QtCore4.dll crashing very frequently (almost always).

 Rebuilding QtCore4.dll with -O2 optimization flag immediately solves the
 issue.
 Of course the debug variant QtCored4.dll works just fine (as only -g is
 supplied).
 Please, look into it.
 In particular, does the issue show up for the newest 4.8.1 releases?
 If not, then I guess we shouldn't worry much as it is fixed, otherwise it
 should definitely be investigated.

 Currently, I haven't time to try 4.8.1 out myself.
 Why do I consider it as regression?
 Obviously because it was not the case with MinGW-w64 based on GCC 4.7.1.

 Kind regards,
 Haroogan


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