search for: basic_streambuf

...ng my custom streambuf I had the "opportunity" of investigating how libstdc++-v3 defines cout and friends. It's not pretty. Basically, there's a stdio_sync_filebuf used as a proxy to C's FILE *. Because stdio_sync_filebuf does no buffering itself (delegating that to FILE), basic_streambuf::overflow is called a lot. Some of this is mitigated with xsputn for multiple characters, but it's a lot of virtual function calls. To get something faster probably means a custom buffering solution (which my custom streambuf has, but is not particularly intelligent) and native syscalls. T...

On Wed, 2007-08-15 at 09:32 -0700, Chris Lattner wrote: > On Tue, 14 Aug 2007, David Greene wrote: > >> Yes, this is one advantage, another is that we wouldn't have to fix the > >> same bug in multiple places :) > > > > Right. I've figured out where I need to make the changes in AsmWriterEmitter > > given the current design. > > Ok, cool. >

...t how to handle asm dumps to cerr. > > It really depends on what you mean. I've found that iostreams are > extremely slow, much slower than C stdio streams. Eventually I'd like to > move them to stdio, not to more complex streambufs :) Basically, what I've done is augment basic_streambuf to keep track of columns and provide manipulators that use this ability to set the output at a specific column (by padding with spaces if necessary). This makes it easy to line up comments, for example. This would be quite a bit uglier with C stdio. For example: // Custom streambuf (pseudo-llvm...

...:71: undefined reference to `__cxa_guard_release' CMakeFiles/cxx.dir/__/src/ios.cpp.o: In function `std::__1::ios_base::clear(unsigned int)': CMakeFiles/cxx.dir/__/src/ios.cpp.o: In function `std::__1::basic_istream<char, std::__1::char_traits<char> >::operator>>(std::__1::basic_streambuf<char, std::__1::char_traits<char> >*)': /opt/llvm/llvm/projects/libcxx/include/istream:900: undefined reference to `__cxa_begin_catch' /opt/llvm/llvm/projects/libcxx/include/istream:900: undefined reference to `__cxa_end_catch' . . . Best Ioannis Koukoulis On 27 March...

...ined reference to `__cxa_guard_release' > CMakeFiles/cxx.dir/__/src/ios.cpp.o: In function `std::__1::ios_base::clear(unsigned int)': > CMakeFiles/cxx.dir/__/src/ios.cpp.o: In function `std::__1::basic_istream<char, std::__1::char_traits<char> >::operator>>(std::__1::basic_streambuf<char, std::__1::char_traits<char> >*)': > /opt/llvm/llvm/projects/libcxx/include/istream:900: undefined reference to `__cxa_begin_catch' > /opt/llvm/llvm/projects/libcxx/include/istream:900: undefined reference to `__cxa_end_catch' > . > . > . > > Best...

...t; `__cxa_guard_release' > CMakeFiles/cxx.dir/__/src/ios.cpp.o: In function > `std::__1::ios_base::clear(unsigned int)': > CMakeFiles/cxx.dir/__/src/ios.cpp.o: In function > `std::__1::basic_istream<char, std::__1::char_traits<char> > >::operator>>(std::__1::basic_streambuf<char, std::__1::char_traits<char> > >*)': > /opt/llvm/llvm/projects/libcxx/include/istream:900: undefined reference to > `__cxa_begin_catch' > /opt/llvm/llvm/projects/libcxx/include/istream:900: undefined reference to > `__cxa_end_catch' > . > . > . &...

...mshtml: Populate dynamic properties table in get_dynamic_data. mshtml: Make sure dynamic properties are initialized in Dispatch functions. mshtml/tests: Added dynamic properties accessing tests. mshtml: Remove no longer needed get_attr_from_nselem function. msvcp90: Added basic_streambuf<char> class stub. msvcp: Sync spec files. msvcp90: Added basic_ostream<char> class stub. msvcp: Sync spec files. msvcp90: Added locale::id class implementation. msvcp90: Added locale::facet class implementation. msvcp90: Added basic_streambuf<char&...

...the details: To reproduce the crash, run llvm-ranlib on the "GNU.a" file in the llvm/test/Regression/Archive directory (make a copy first: it corrupts it). It then crashes with a Bus Error. The stack trace is: #0 0x4207c1aa in memcpy () from /lib/tls/libc.so.6 #1 0x400d55e8 in std::basic_streambuf<char, std::char_traits<char> >::xsputn(char const*, int) () from /usr/lib/libstdc++.so.5 #2 0x4009c818 in std::basic_filebuf<char, std::char_traits<char> >::xsputn(char const*, int) () from /usr/lib/libstdc++.so.5 #3 0x400cbed1 in std::ostream::write(char const*, int)...

.../root/openh323/lib/libh323_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std::char_traits<char> >::~basic_iostream()' /root/pwlib/lib/libpt_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std::char_traits<char> >::basic_iostream(std::basic_streambuf<char, std::char_traits<char> >*)' /root/pwlib/lib/libpt_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std::char_traits<char> >::~basic_iostream()' /root/openh323/lib/libh323_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std:...

.../root/openh323/lib/libh323_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std::char_traits<char> >::~basic_iostream()' /root/pwlib/lib/libpt_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std::char_traits<char> >::basic_iostream(std::basic_streambuf<char, std::char_traits<char> >*)' /root/pwlib/lib/libpt_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std::char_traits<char> >::~basic_iostream()' /root/openh323/lib/libh323_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std:...

...bh323_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std::char_traits<char> >::~basic_iostream()' /root/oh323/openh323/../pwlib/lib/libpt_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std::char_traits<char> >::basic_iostream (std::basic_streambuf<char, std::char_traits<char> >*)' /root/oh323/openh323/../pwlib/lib/libpt_linux_x86_r.so: undefined reference to `std::basic_iostream<char, std::char_traits<char> >::~basic_iostream()' /root/oh323/openh323/lib/libh323_linux_x86_r.so: undefined reference to `std::ba...

...sic_code_modules.obj lld-link.exe: error: duplicate symbol: __profc_?flags at ios_base@std@@QEBAHXZ in minidump-analyzer.obj and in ..\google-breakpad\src\processor\basic_code_modules.obj lld-link.exe: error: duplicate symbol: __profc_?rdbuf@?$basic_ios at DU ?$char_traits at D@std@@@std@@QEBAPEAV?$basic_streambuf at DU?$char_traits at D@std@ @@2 at XZ in minidump-analyzer.obj and in ..\google-breakpad\src\processor\basic_code_modules.obj and several dozen more like this, all with a __profc_ prefix. I had hoped to isolate this by linking some small test files that use iostreams, but they didn't reprodu...

...mbuf I had the > "opportunity" of investigating how libstdc++-v3 defines cout and friends. > It's not pretty. Basically, there's a stdio_sync_filebuf used as a proxy to > C's FILE *. Because stdio_sync_filebuf does no buffering itself (delegating > that to FILE), basic_streambuf::overflow is called a lot. Some of this is > mitigated with xsputn for multiple characters, but it's a lot of virtual > function calls. Yes, it is extremely inefficient. > To get something faster probably means a custom buffering solution (which > my custom streambuf has, but is...

...hunk to std::basic_ostream<char, std::char_traits<char> >::~basic_ostream()' libbackend.a(llvm-backend.o):(.rodata._ZTVN9__gnu_cxx13stdio_filebufIcSt11char_traitsIcEEE[vtable for __gnu_cxx::stdio_filebuf<char, std::char_traits<char> >]+0x30): undefined reference to `std::basic_streambuf<char, std::char_traits<char> >::uflow()' libbackend.a(llvm-convert.o): In function `TreeToLLVM::CreateTemporary(llvm::Type const*)': llvm-convert.cpp:(.text+0x427): undefined reference to `std::basic_string<char, std::char_traits<char>, std::allocator<char> >::...

...___ZTVSt15basic_stringbufIcSt11char_traitsIcESaIcEE (auto-import) Info: resolving std::basic_string<char, std::char_traits<char>, std::allocator<char> >::_Rep::_S_empty_rep_storage by linking to __imp___ZNSs4_Rep20_S_empty_rep_storageE (auto-import) Info: resolving vtable for std::basic_streambuf<char, std::char_traits<char> > by linking to __imp___ZTVSt15basic_streambufIcSt11char_traitsIcEE (auto-import) Info: resolving vtable for std::basic_ios<char, std::char_traits<char> > by linking to __imp___ZTVSt9basic_iosIcSt11char_traitsIcEE (auto-import) Info: resolving VT...

On Tue, 14 Aug 2007, David Greene wrote: >> Yes, this is one advantage, another is that we wouldn't have to fix the >> same bug in multiple places :) > > Right. I've figured out where I need to make the changes in AsmWriterEmitter > given the current design. Ok, cool. > I'm trying out a few interesting things here based on custom streambufs. > It requires

...or 11, Kindle for PC) 27064 Liquidator 2 needs msvcp71.dll.??0?$basic_ofstream at DU?$char_traits at D@std@@@std@@QAE at XZ 27318 OpenGL 2.0 Shading Language Terrain Texturing Demo crashes on unimplemented function msvcp100.dll.??0?$basic_istream at DU?$char_traits at D@std@@@std@@QAE at PAV?$basic_streambuf at DU?$char_traits at D@std@@@1 at _N@Z 27764 Civ 5 demo wants msvcp90.dll.$basic_ofstream at DU?$char_traits at D@std@@@std@@QAE at XZ (purist) 27767 htmlhelp not showing diacritic characters from html encoded entity 27918 GTAIV doesn't show anything after switching resolution 28041...

On Monday 13 August 2007 15:50, Chris Lattner wrote: > > I also have a few questions on the general design of AsmPrinter. Why is > > runOnMachineFunction implemented for each target AsmPrinter? I would > > Historical reasons that aren't very good. Over the years, I've taken > several stabs at merging the asmprinters from various targets together. > They used to

Hi Ioannis, If you only want the clang static analyzer, there is no need to check out and build libc++ as part of the process. The rest of the build can just use the system C++ library, which will be libstdc++ on Xubuntu. That said, without the full build log, it is hard to say what went wrong. Specifically, which references were undefined? -Dimitry > On 26 Mar 2016, at 16:04, Ioannis

...hort> implementation. msvcp90: Added basic_istringstream<short> implementation. msvcp90: Added basic_stringstream<short> implementation. msvcp90: Use streamoff in std::_BADOFF definition. msvcp90: Added partial strstreambuf implementation. msvcp90: Fixed basic_streambuf::sputn functions behaviour when there's no place in buffer. msvcp90: Reset width value in basic_istream class on error. msvcp90: Added strstreambuf seekpos and seekoff implementation. msvcp90: Added missing -ret64 option. msvcp100: Copy source files from msvcp90. m...