[Bug c++/42609] New: undesired operation when working with mno-cygwin

[Bug c++/42609] New: undesired operation when working with mno-cygwin

[jojelino at gmail dot com]

hi i'm using gcc in i686-pc-cygwin and building djvulibre library for target
i686-pc-mingw32 version of gcc in two platform is from latest git reprository.

and i'm using following configuration for djvulibre
./configure --prefix=/usr/i686-pc-mingw32 CC='gcc -mno-cygwin' CXX='g++
-mno-cygwin -I/usr/include/w32api' --target=i686-pc-mingw32
--host=i686-pc-mingw32

at link step, there is problem for new, delete operator function wrapper
(defined in cygwin.h #define CXX_WRAP_SPEC_LIST)

below are trial and error.
------------
i686-pc-mingw32-g++ -shared  .libs/DjVuGlobal.o .libs/DjVuGlobalMemory.o
.libs/GOS.o .libs/GException.o .libs/GContainer.o .libs/GString.o
.libs/GThreads.o .libs/GRect.o .libs/atomic.o .libs/GSmartPointer.o .libs/MMX.o
.libs/Arrays.o .libs/GBitmap.o .libs/GPixmap.o .libs/GScaler.o
.libs/DjVuPalette.o .libs/ByteStream.o .libs/IFFByteStream.o
.libs/BSByteStream.o .libs/BSEncodeByteStream.o .libs/ZPCodec.o
.libs/JB2Image.o .libs/JB2EncodeCodec.o .libs/IW44Image.o
.libs/IW44EncodeCodec.o .libs/MMRDecoder.o .libs/JPEGDecoder.o .libs/DataPool.o
.libs/GURL.o .libs/DjVuFileCache.o .libs/DjVuPort.o .libs/GMapAreas.o
.libs/DjVuAnno.o .libs/GIFFManager.o .libs/DjVuText.o .libs/DjVuInfo.o
.libs/DjVuFile.o .libs/DjVuImage.o .libs/DjVuDocument.o .libs/DjVmDir.o
.libs/DjVmDoc.o .libs/DjVmDir0.o .libs/DjVmNav.o .libs/DjVuNavDir.o
.libs/DjVuErrorList.o .libs/DjVuDocEditor.o .libs/DjVuToPS.o
.libs/DjVuDumpHelper.o .libs/DjVuMessageLite.o .libs/DjVuMessage.o
.libs/GUnicode.o .libs/UnicodeByteStream.o .libs/XMLParser.o .libs/XMLTags.o
.libs/miniexp.o .libs/ddjvuapi.o .libs/debug.o 
/usr/i686-pc-mingw32/lib/libjpeg.dll.a  -mtune=i686 -mthreads
-Wl,--export-all-symbols -o .libs/libdjvulibre-21.dll
-Wl,--image-base=0x10000000 -Wl,--out-implib,.libs/libdjvulibre.dll.a
Creating library file: .libs/libdjvulibre.dll.a
---------------------------------
g++ -mno-cygwin -shared  .libs/DjVuGlobal.o .libs/DjVuGlobalMemory.o
.libs/GOS.o .libs/GException.o .libs/GContainer.o .libs/GString.o
.libs/GThreads.o .libs/GRect.o .libs/atomic.o .libs/GSmartPointer.o .libs/MMX.o
.libs/Arrays.o .libs/GBitmap.o .libs/GPixmap.o .libs/GScaler.o
.libs/DjVuPalette.o .libs/ByteStream.o .libs/IFFByteStream.o
.libs/BSByteStream.o .libs/BSEncodeByteStream.o .libs/ZPCodec.o
.libs/JB2Image.o .libs/JB2EncodeCodec.o .libs/IW44Image.o
.libs/IW44EncodeCodec.o .libs/MMRDecoder.o .libs/JPEGDecoder.o .libs/DataPool.o
.libs/GURL.o .libs/DjVuFileCache.o .libs/DjVuPort.o .libs/GMapAreas.o
.libs/DjVuAnno.o .libs/GIFFManager.o .libs/DjVuText.o .libs/DjVuInfo.o
.libs/DjVuFile.o .libs/DjVuImage.o .libs/DjVuDocument.o .libs/DjVmDir.o
.libs/DjVmDoc.o .libs/DjVmDir0.o .libs/DjVmNav.o .libs/DjVuNavDir.o
.libs/DjVuErrorList.o .libs/DjVuDocEditor.o .libs/DjVuToPS.o
.libs/DjVuDumpHelper.o .libs/DjVuMessageLite.o .libs/DjVuMessage.o
.libs/GUnicode.o .libs/UnicodeByteStream.o .libs/XMLParser.o .libs/XMLTags.o
.libs/miniexp.o .libs/ddjvuapi.o .libs/debug.o 
/usr/i686-pc-mingw32/lib/libjpeg.dll.a  -mtune=i686 -mthreads
-Wl,--export-all-symbols -o .libs/libdjvulibre-21.dll
-Wl,--image-base=0x10000000 -Wl,--out-implib,.libs/libdjvulibre.dll.a
KNS_4GURLE[DJVU::lt_XMLTags::create(DJVU::GURL const&)]+0x17): undefined
referen
ce to `___wrap__Znwj'
.libs/DjVuMessageLite.o:DjVuMessageLite.cpp:(.text$_ZN4DJVU10lt_XMLTags6createER
KNS_4GURLE[DJVU::lt_XMLTags::create(DJVU::GURL const&)]+0x56): undefined
referen
ce to `___wrap__ZdlPv'
.libs/DjVuMessageLite.o:DjVuMessageLite.cpp:(.text$_ZN4DJVU10lt_XMLTags6createER
KNS_2GPINS_10ByteStreamEEE[DJVU::lt_XMLTags::create(DJVU::GP<DJVU::ByteStream>
c
onst&)]+0x17): undefined reference to `___wrap__Znwj'
.libs/DjVuMessageLite.o:DjVuMessageLite.cpp:(.text$_ZN4DJVU10lt_XMLTags6createER
KNS_2GPINS_10ByteStreamEEE[DJVU::lt_XMLTags::create(DJVU::GP<DJVU::ByteStream>
c
onst&)]+0x56): undefined reference to `___wrap__ZdlPv'
.libs/DjVuMessageLite.o:DjVuMessageLite.cpp:(.text$_ZN4DJVU10lt_XMLTags6createER
NS_13XMLByteStreamE[DJVU::lt_XMLTags::create(DJVU::XMLByteStream&)]+0x17):
undef
ined reference to `___wrap__Znwj'
.libs/DjVuMessageLite.o:DjVuMessageLite.cpp:(.text$_ZN4DJVU10lt_XMLTags6createER
NS_13XMLByteStreamE[DJVU::lt_XMLTags::create(DJVU::XMLByteStream&)]+0x56):
undef
ined reference to `___wrap__ZdlPv'
.libs/DjVuMessageLite.o:DjVuMessageLite.cpp:(.text$_ZN4DJVU10lt_XMLTags6addtagEN
S_2GPIS0_EE[DJVU::lt_XMLTags::addtag(DJVU::GP<DJVU::lt_XMLTags>)]+0x32):
undefin
ed reference to `___wrap__Znwj'
.libs/DjVuMessageLite.o:DjVuMessageLite.cpp:(.text$_ZN4DJVU10lt_XMLTags6addtagEN
S_2GPIS0_EE[DJVU::lt_XMLTags::addtag(DJVU::GP<DJVU::lt_XMLTags>)]+0x107):
undefi
ned reference to `___wrap__Znwj'
.libs/DjVuMessageLite.o:DjVuMessageLite.cpp:(.text$_ZN4DJVU10lt_XMLTags6addtagEN
S_2GPIS0_EE[DJVU::lt_XMLTags::addtag(DJVU::GP<DJVU::lt_XMLTags>)]+0x158):
undefi
ned reference to `___wrap__Znwj'
.libs/DjVuMessage.o:DjVuMessage.cpp:(.text+0x33e): undefined reference to
`___wr
ap__Znwj'
.libs/DjVuMessage.o:DjVuMessage.cpp:(.text+0x579): undefined reference to
`___wr
ap__Znwj'
.libs/DjVuMessage.o:DjVuMessage.cpp:(.text+0x71c): more undefined references to
`___wrap__Znwj' follow
.libs/DjVuMessage.o:DjVuMessage.cpp:(.text+0x28f5): undefined reference to
`___w
rap__ZdlPv'
.libs/DjVuMessage.o:DjVuMessage.cpp:(.text+0x5b): undefined reference to
`___wra
p__ZdlPv'
.libs/GUnicode.o:GUnicode.cpp:(.text+0x2fa): undefined reference to
`___wrap__Zn
wj'
.libs/GUnicode.o:GUnicode.cpp:(.text+0x358): undefined reference to
`___wrap__Zn
wj'
.libs/GUnicode.o:GUnicode.cpp:(.text+0x385): undefined reference to
`___wrap__Zd
lPv'
.libs/GUnicode.o:GUnicode.cpp:(.text+0x1e7): undefined reference to
`___wrap__Zd
lPv'
.libs/UnicodeByteStream.o:UnicodeByteStream.cpp:(.text+0x14dd): undefined
refere
nce to `___wrap__Znwj'
.libs/UnicodeByteStream.o:UnicodeByteStream.cpp:(.text+0x1534): undefined
refere
nce to `___wrap__ZdlPv'
.libs/UnicodeByteStream.o:UnicodeByteStream.cpp:(.text+0x157): undefined
referen
ce to `___wrap__ZdlPv'
.libs/UnicodeByteStream.o:UnicodeByteStream.cpp:(.text+0x1c7): undefined
referen
ce to `___wrap__ZdlPv'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x2e8): undefined reference to
`___wrap__
Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0xd66): undefined reference to
`___wrap__
Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x1607): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x1635): undefined reference to
`___wrap_
_ZdlPv'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x171f): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x17ca): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x1c42): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x1d33): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x1db3): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x1eca): more undefined references to
`__
_wrap__Znwj' follow
.libs/XMLParser.o:XMLParser.cpp:(.text+0x39e3): undefined reference to
`___wrap_
_ZdlPv'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x3a7e): undefined reference to
`___wrap_
_ZdlPv'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x4168): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x41de): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x5f3a): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x5f9d): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x6000): undefined reference to
`___wrap_
_Znwj'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x6063): more undefined references to
`__
_wrap__Znwj' follow
.libs/XMLParser.o:XMLParser.cpp:(.text+0x7b): undefined reference to
`___wrap__Z
dlPv'
.libs/XMLParser.o:XMLParser.cpp:(.text+0x450): undefined reference to
`___wrap__
ZdlPv'
.libs/XMLTags.o:XMLTags.cpp:(.text+0x6b8): undefined reference to
`___wrap__Znwj
'
.libs/XMLTags.o:XMLTags.cpp:(.text+0xec8): undefined reference to
`___wrap__Znwj
'
.libs/XMLTags.o:XMLTags.cpp:(.text+0x14a4): undefined reference to
`___wrap__Znw
j'
.libs/XMLTags.o:XMLTags.cpp:(.text+0x1a5e): undefined reference to
`___wrap__Znw
j'
.libs/XMLTags.o:XMLTags.cpp:(.text+0x1b1e): undefined reference to
`___wrap__Znw
j'
.libs/XMLTags.o:XMLTags.cpp:(.text+0x223d): undefined reference to
`___wrap__Zdl
Pv'
.libs/XMLTags.o:XMLTags.cpp:(.text+0x27a8): undefined reference to
`___wrap__Znw
j'
.libs/XMLTags.o:XMLTags.cpp:(.text+0xdb): undefined reference to
`___wrap__ZdlPv
'
.libs/miniexp.o:miniexp.cpp:(.text+0x34b): undefined reference to
`___wrap__ZdaP
v'
.libs/miniexp.o:miniexp.cpp:(.text+0x390): undefined reference to
`___wrap__Znaj
'
.libs/miniexp.o:miniexp.cpp:(.text+0x433): undefined reference to
`___wrap__Znaj
'
.libs/miniexp.o:miniexp.cpp:(.text+0x463): undefined reference to
`___wrap__ZdaP
v'
.libs/miniexp.o:miniexp.cpp:(.text+0x56b): undefined reference to
`___wrap__ZdaP
v'
.libs/miniexp.o:miniexp.cpp:(.text+0xdd5): undefined reference to
`___wrap__ZdaP
v'
.libs/miniexp.o:miniexp.cpp:(.text+0x1043): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x111a): undefined reference to
`___wrap__Znw
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x1140): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x118a): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x11f3): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x1213): undefined reference to
`___wrap__Znw
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x1239): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x12bb): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x12e6): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x136b): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x13a7): undefined reference to
`___wrap__Zdl
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x1ceb): undefined reference to
`___wrap__Znw
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x1e89): undefined reference to
`___wrap__Znw
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x22bf): undefined reference to
`___wrap__Znw
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x255d): undefined reference to
`___wrap__Znw
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x288a): undefined reference to
`___wrap__Znw
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x2b07): more undefined references to
`___wra
p__Znwj' follow
.libs/miniexp.o:miniexp.cpp:(.text+0x2b22): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x2b54): undefined reference to
`___wrap__Zdl
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x2edc): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x2f04): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3054): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x307c): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x32a0): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x32c7): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x32fc): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x332b): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3589): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x35b5): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3602): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x365c): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x367e): undefined reference to
`___wrap__Znw
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x3700): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x3740): undefined reference to
`___wrap__Znw
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x3768): undefined reference to
`___wrap__Zna
j'
.libs/miniexp.o:miniexp.cpp:(.text+0x3a1a): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3a78): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3bec): undefined reference to
`___wrap__Zdl
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3c1c): undefined reference to
`___wrap__Zdl
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3c67): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3c6f): undefined reference to
`___wrap__Zdl
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3c93): undefined reference to
`___wrap__Zda
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x3c9b): undefined reference to
`___wrap__Zdl
Pv'
.libs/miniexp.o:miniexp.cpp:(.text+0x301): undefined reference to
`___wrap__ZdlP
v'
.libs/miniexp.o:miniexp.cpp:(.text+0x32b): undefined reference to
`___wrap__ZdlP
v'
.libs/miniexp.o:miniexp.cpp:(.text+0x580): undefined reference to
`___wrap__ZdlP
v'
.libs/miniexp.o:miniexp.cpp:(.text+0x75a): undefined reference to
`___wrap__ZdlP
v'
.libs/miniexp.o:miniexp.cpp:(.text+0x22ff): more undefined references to
`___wra
p__ZdlPv' follow
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x699): undefined reference to
`___wrap__Zn
wj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x10be): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x1118): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x1501): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x1850): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x1d36): more undefined references to
`___w
rap__Znwj' follow
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x28ca): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x2936): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x3b73): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x3c25): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x3d06): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x3d55): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x4883): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x5774): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x8451): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x84a4): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x86e4): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x8735): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x87cf): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x889f): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x92d5): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x936a): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x94ef): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x98dd): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x9b5c): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0xccfb): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0xd21f): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0xec51): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0xeeaf): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0xefa9): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0xf0cc): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0xf1fb): undefined reference to
`___wrap__Z
nwj'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0xf29d): more undefined references to
`___w
rap__Znwj' follow
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x851f): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text+0x89f8): undefined reference to
`___wrap__Z
dlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text$_ZN4DJVU15ddjvu_message_pD0Ev[DJVU::ddjvu_m
essage_p::~ddjvu_message_p()]+0x37): undefined reference to `___wrap__ZdlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text$_ZN4DJVU17ddjvu_thumbnail_pD0Ev[DJVU::ddjvu
_thumbnail_p::~ddjvu_thumbnail_p()]+0x37): undefined reference to
`___wrap__ZdlP
v'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text$_ZN4DJVU15ddjvu_context_sD0Ev[DJVU::ddjvu_c
ontext_s::~ddjvu_context_s()]+0x4d): undefined reference to `___wrap__ZdlPv'
.libs/ddjvuapi.o:ddjvuapi.cpp:(.text$_ZN4DJVU8GMapImplINS_11GUTF8StringEiE13get_
or_createERKS1_[DJVU::GMapImpl<DJVU::GUTF8String,
int>::get_or_create(DJVU::GUTF
8String const&)]+0x68): undefined reference to `___wrap__Znwj'
collect2: ld returned 1 exit status
------------------------------------------------------------------------
djvulibre is using its own new, delete operator function.

when we use -mno-cygwin flag for gcc with host i686-pc-cygwin,
stdcxx wrappers for cygwin must be disabled because of libcygwin.a is not
linked with it.
but, when building gcc for target i686-pc-cygwin ,
USE_CYGWIN_LIBSTDCXX_WRAPPERS and -mno-use-libstdc-wrappers seems to be
enabled.
then, CXX_WRAP_SPEC_LIST will be enabled although it must be disabled when
added flag -mno-cygwin. causing undefined symbol problem which i had.

but when linking with i686-pc-mingw32-g++, it has no undefined symbol problem.
because there is no --wrap argument.

please consider to fix this problem


-- 
           Summary: undesired operation when working with mno-cygwin
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jojelino at gmail dot com
 GCC build triplet: i686-pc-cygwin
  GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42609

[Bug c++/42609] undesired operation when working with mno-cygwin

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2010-01-04 14:16 -------
This sounds more like a cygwin problem, not a GCC one.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42609

[Bug c++/42609] undesired operation when working with mno-cygwin

[davek at gcc dot gnu dot org]

------- Comment #2 from davek at gcc dot gnu dot org  2010-02-17 15:10 -------
(In reply to comment #1)
> This sounds more like a cygwin problem, not a GCC one.

It's a problem with the cygwin target-dependent linker spec.

The -mno-cygwin option is deprecated and scheduled to be withdrawn, so I was
tempted to close this as WONTFIX; in general, the future answer to all problems
with "-mno-cygwin" is going to be "use a real mingw-targeted cross-compiler
instead".

However removing it properly involves some code changes and stuff that I'd
really rather only do during stage1.  I guess it would be such a simple and
safe fix to tweak the spec that I'm tempted to repair rather than remove it for
4.5.  I'll spin up a patch.


-- 

davek at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |davek at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2010-02-17 15:10:49
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42609

[Bug c++/42609] [4.5 regression] undesired operation when working with mno-cygwin

[davek at gcc dot gnu dot org]

------- Comment #3 from davek at gcc dot gnu dot org  2010-04-01 01:11 -------
I figure this is worth fixing in the ~22-hour window remaining before 2nd
April.  The option although deprecated should not for preference be released in
a broken state, and since it worked in all previous versions (i.e. before I
added the libstdc++ wrappers) this is a regression.  The fix should be really
really trivial:

Index: gcc/config/i386/cygwin.h
===================================================================
--- gcc/config/i386/cygwin.h    (revision 157789)
+++ gcc/config/i386/cygwin.h    (working copy)
@@ -108,7 +108,7 @@ along with GCC; see the file COPYING3.  If not see
 #define CXX_WRAP_SPEC_OPT "muse-libstdc-wrappers"
 #endif

-#define CXX_WRAP_SPEC "%{" CXX_WRAP_SPEC_OPT ":" CXX_WRAP_SPEC_LIST "}"
+#define CXX_WRAP_SPEC "%{!mno-cygwin:%{" CXX_WRAP_SPEC_OPT ":"
CXX_WRAP_SPEC_LIST "}}"

 #else /* !defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)  */


I'll set the bootstrap going now.  That'll leave me some time to test it this
coming lunchtime/afternoon/evening (UK time) and check it in long before
midnight.

Richard G., please speak up if you have any objection to this plan, if I
haven't heard anything from you by a few hours before the midnight deadline
I'll assume you're ok with it.


-- 

davek at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org
      Known to fail|                            |4.5.0
      Known to work|                            |4.4.0
            Summary|undesired operation when    |[4.5 regression] undesired
                   |working with mno-cygwin     |operation when working with
                   |                            |mno-cygwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42609

[Bug c++/42609] [4.5 regression] undesired operation when working with mno-cygwin

[rguenther at suse dot de]

------- Comment #4 from rguenther at suse dot de  2010-04-01 12:04 -------
Subject: Re:  [4.5 regression] undesired operation when working
 with mno-cygwin

On Thu, 1 Apr 2010, davek at gcc dot gnu dot org wrote:

> ------- Comment #3 from davek at gcc dot gnu dot org  2010-04-01 01:11 -------
> I figure this is worth fixing in the ~22-hour window remaining before 2nd
> April.  The option although deprecated should not for preference be released in
> a broken state, and since it worked in all previous versions (i.e. before I
> added the libstdc++ wrappers) this is a regression.  The fix should be really
> really trivial:
> 
> Index: gcc/config/i386/cygwin.h
> ===================================================================
> --- gcc/config/i386/cygwin.h    (revision 157789)
> +++ gcc/config/i386/cygwin.h    (working copy)
> @@ -108,7 +108,7 @@ along with GCC; see the file COPYING3.  If not see
>  #define CXX_WRAP_SPEC_OPT "muse-libstdc-wrappers"
>  #endif
> 
> -#define CXX_WRAP_SPEC "%{" CXX_WRAP_SPEC_OPT ":" CXX_WRAP_SPEC_LIST "}"
> +#define CXX_WRAP_SPEC "%{!mno-cygwin:%{" CXX_WRAP_SPEC_OPT ":"
> CXX_WRAP_SPEC_LIST "}}"
> 
>  #else /* !defined (USE_CYGWIN_LIBSTDCXX_WRAPPERS)  */
> 
> 
> I'll set the bootstrap going now.  That'll leave me some time to test it this
> coming lunchtime/afternoon/evening (UK time) and check it in long before
> midnight.
> 
> Richard G., please speak up if you have any objection to this plan, if I
> haven't heard anything from you by a few hours before the midnight deadline
> I'll assume you're ok with it.

It looks reasonable - well, I don't know nothing about cygwin.  But
it doesn't touch other targets, so if a cygwin maintainer is ok with
it I'm fine with it as well.

Richard.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42609

[Bug target/42609] [4.5 regression] undesired operation when working with mno-cygwin

[davek at gcc dot gnu dot org]

------- Comment #5 from davek at gcc dot gnu dot org  2010-04-01 20:22 -------
bootstrapped, manual testing, and g++ testing now got far enough to verify the
critical testcases g++.old-deja/g++.abi/cxa_vec.C and
g++.old-deja/g++.brendan/new3.C aren't affected, which would be the place where
any problem in this change would show up.  about to commit.


-- 

davek at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |target
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42609

[Bug target/42609] [4.5 regression] undesired operation when working with mno-cygwin

[davek at gcc dot gnu dot org]

------- Comment #6 from davek at gcc dot gnu dot org  2010-04-01 20:24 -------
Subject: Bug 42609

Author: davek
Date: Thu Apr  1 20:24:35 2010
New Revision: 157931

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=157931
Log:
        PR target/42609
        * config/i386/cygwin.h (CXX_WRAP_SPEC): Disable spec when -mno-cygwin.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/cygwin.h


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42609

[Bug target/42609] [4.5 regression] undesired operation when working with mno-cygwin

[davek at gcc dot gnu dot org]

------- Comment #7 from davek at gcc dot gnu dot org  2010-04-01 20:27 -------
> Comment Required
> You have to specify a comment on this change. Please explain your change.

"I fixed it, so I set the resolution to 'FIXED'".  Silly bugzilla!


-- 

davek at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42609