similar to: About dll from c++ routine

In the "Writing R Extensions" manual appears this example, to get access to C++ function using the R commands: R> dyn.load(paste("X", .Platform$dynlib.ext, sep = "")) constructor Y R> .C("X_main") constructor X destructor X list() That gives me access to the function "X_main", but how to get access to methods and properties

Hi, I am trying to set up a C++ library for my R code. I followed the R-extension manual but found out that the example of "X.cpp, X_main.cpp" is somewhat too simple. Here is my code: //lib4R.h testing for interfacing C++ with R -- using C++ library in R #include <iostream> using namespace std; class lib4R { public: lib4R(); ~lib4R(); int

I am trying to get a dll compiled for use with dyn.load. I use R.1.7.1 under Windows. I have tried the following trivial example based on the "Writing R extensions" manual. rtest.h -------- class X { public: X (); ~X (); void Give7(double*); }; class Y { public: Y (); ~Y (); }; rtest.cpp --------- #include <iostream.h> #include "rtest.h" static Y y;

Folks, I'm fairly sure that I'm doing something stupid, but I'm getting a few really strange results from *some* of the distributions, but by no means all, when I link directly to the R shared library. I've tried this on both Windows with the precompiled Mingw binary of R-2.5.0 (compiling my code with MinGW-3.4.2), and by building R-2.5.0 on Mandriva Linux with gcc-3.4.4 and

# Your mailer is set to "none" (default on Windows), # hence we cannot send the bug report directly from R. # Please copy the bug report (after finishing it) to # your favorite email program and send it to # # r-bugs@r-project.org # ###################################################### Several libraries won't load with rw1090pat. MASS, which is included with the distribution,

Hello, I am a newbie to LLVM and right now I am on the hook to parse some IR code and do some instrumentations. However, my problem is that no matter how I tweak my parsing code, it simply cannot print out anything. So here is my C code: int your_fun(int arg2) { int x = arg2; return x+2; } And here is my parsing code: #include <llvm/IR/Module.h> #include

As of LLVM 3.2, is it possible to use iostream with the MCJIT or interpreter execution engines? I'm getting some errors... Each of these commands correctly prints "hello": echo -e '#include <stdio.h>\nint main(){ printf("hello"); }' | clang -cc1 -emit-llvm-bc -x c++ | lli -use-mcjit echo -e '#include <iostream>\nint main(){ std::cout <<

Hello all, I recently foudn myself wanting to view the basic blocks in the selection DAG as pure DAGs - so just as a list of edges, with no other information. I added the below code to the start of the " void SelectionDAGISel::CodeGenAndEmitDAG()" function. It creates a separate txt file for each basic block and gives a list of edges between nodes. The segment of code is below -

Hi, when building the second release candidate of llvm 2.2 I noticed that exception handling seems to be broken on Linux x86-64. The exception is thrown but never caught. This can be seen by this trivial example: #include <iostream> using namespace std; class A { }; int main() { cout << "A" << endl; try { cout << "B" << endl;

Some time ago, I asked on this list, if it is possible to use C++ libraries under R. In fact this seems to be very easy (at least under Redhat 5.2, egcs C++): e.g. Suppose we have a library R_main.cc: ------------------------------- #include "X.hh" extern "C" { void R_main () { X x; } } ------------------------------- X.hh ------------------------------- class X {

Why does the following show a class attribute of "character" when using the interpreter: x <- data.frame(hat=1:10) class(rownames(x)) ## returns [1] "character" but when called from c/cpp, the rownames attribute has no class attribute, and is in fact a vector of INTSXP? > .Call("print_class_of_rownames", x, package = "test") length(x): 10

I get a crash when I try to link multiple modules registered in their individual contexts. Documentation for Linker::LinkModules doesn't mention anything about contexts, and the first link succeeds. But the second link crashes. Is this not the right way to merge such modules? If not, then what is the right way? In any case, documentation for Linker::LinkModules should say if contexts are

Hi, I'm trying to write a small piece of code that inlines all calls to a particular function. The codes is as follows Function* klee_check_divF = module->getFunction("klee_div_zero_check"); assert(klee_check_divF != 0 && "Failed to find klee_div_zero_check function"); // Hack inline checks for (Module::iterator f = module->begin(), fe =

The solution (provided in Microsoft's documentation) is to add: #include <cstdio> #include <io.h> #include <fcntl.h> and run: int result = _setmode( _fileno(stdin), _O_BINARY ); if( result == -1 ) { std::cerr<<"Cannot set input mode to binary."<<std::endl; return 1; } result = _setmode( _fileno(stdout), _O_BINARY ); if( result == -1 ) {

[Was initially posted on cfe-users, sorry.] Hi, I'm sorry my message is quite long, the TL;DR version is "g++ and clang++ seem to have different opinions on how RTTI, templates, and ELF visibility should interact". I can't tell whether this is a bug or not: I have found no relevant documentation that could help me decide whether this behavior is meant, or not. All I can say

Hi, I followed the example in "Writing R Extensions" to create a shared object in Windows, using the command R CMD SHLIB X.cc X_main.cc This was encountered: ../src/gnuwin32/MkRules:155: warning: overriding commands for target '.c.d' ../src/gnuwin32/MkRules:143: warning: ignoring old commands for target '.c.d' ../src/gnuwin32/MkRules:171: warning: overriding commands

Hi, I think I have discovered a bug in FreeBSD 4.8-STABLE's system C++ compiler: % gcc -v % Using builtin specs. % gcc version 2.95.4 20020320 [FreeBSD] Here is a stripped down example that can be used to reproduce the bug: // ----------- begin bug.cpp ----------- #include <iostream> class Class { public: void M1 (void) { cout << "M1" << endl; }; void M2

Hello, I've added a Channel Device through virt-manager GUI. virsh dumpxml shows the device as. <channel type='unix'> <source mode='bind' path='/var/lib/libvirt/qemu/channel/target/ubuntusaucy.marx'/> <target type='virtio' name='marx'/> <alias name='channel2'/> <address

Hi All, Specifically, the problem is that I want to insert a string into the source code. When the source code is compiled by the compiler into bitcode file such info will be extracted and stored somewhere else, and the compiler only compiles the original source code. An example is like: a1.cpp: int main() { int a = 0; cout << a << endl; } I'd like to

I'm trying to link two modules together using the C++ API, one that's a sort of library module and one that's being generated from the source language. If I have something like this: OwningPtr<MemoryBuffer> owning_ptr; if (MemoryBuffer::getFile(StringRef("../hello.bc"), owning_ptr)) std::cout << "error opening file" << std::endl; Module* Lib