>Use <tr1/unordered_map> and std::tr1::unordered_map Thanks // Naderan *Mahmood; ----- Original Message ---- From: Jonathan Wakely <jwakely.gcc@xxxxxxxxx> To: Mahmood Naderan <nt_mahmood@xxxxxxxxx> Cc: gcc <gcc-help@xxxxxxxxxxx> Sent: Fri, April 1, 2011 9:27:47 PM Subject: Re: problem with deprecated ext/hash_map On 1 April 2011 15:53, Mahmood Naderan wrote: > Hi, > what happen to ext/hash_map ? What is the replacement for this header? > I have this code: #include <ext/hash_map> > ... > typedef __gnu_cxx::hash_map<PhysicalMemoryAddress, InfiniteDirectoryEntry_p, > AddrHash> inf_directory_t; > and get this error: > In file included from /usr/include/c++/4.4/ext/hash_map:60, > from InfiniteDir.cpp:47: > /usr/include/c++/4.4/backward/backward_warning.h:28:2: error: #warning This >file > includes at least one deprecated or antiquated header which may be removed > without further notice at a future date. Please use a non-deprecated interface > with equivalent functionality instead. For a listing of replacement headers and > interfaces, consult the file backward_warning.h. To disable this warning use > -Wno-deprecated. > > based on backward_warning.h, I used <unordered_map>. So my code changes to: > > #include <unordered_map> > ... > typedef __gnu_cxx::hash_map<PhysicalMemoryAddress, InfiniteDirectoryEntry_p, > AddrHash> inf_directory_t; > This time I get this error: > In file included from /usr/include/c++/4.4/unordered_map:35, > from InfiniteDirectory.cpp:47: > /usr/include/c++/4.4/c++0x_warning.h:31:2: error: #error This file requires > compiler and library support for the upcoming ISO C++ standard, C++0x. This > support is currently experimental, and must be enabled with the -std=c++0x or > -std=gnu++0x compiler options. > > where should I exactly use -std? In makefile? It's a compiler option, so you would use it like any other compiler topion. If you invoke the compiler from a makefile, then yes, put it in your makefile. But you actually have several choices: Continue to use <ext/hash_map.h> and use -Wno-deprecated to stop the warning Use <tr1/unordered_map> and std::tr1::unordered_map Use <unordered_map> and std::unordered_map and -std=c++0x The second option is probably the simplest.
