During the compilation of a program I was making, that uses the Magick++ library, there appeared an incredibily huge ammount of errors.
This is the command line I used for compile it (g++'s version is 4.9.2, running on Ubuntu 12.04):
g++ -std=c++14 -g -fopenmp `Magick++-config --cppflags --cxxflags` main.cpp -o glitch_img2 `Magick++-config --ldflags --libs`
Here is the program's code:
#include <iostream>
#include <cstdlib>
#include <cstdint>
#include <cstring>
#include <cmath>
#include <string>
#ifdef __OPENMP
#include <omp.h>
#endif
#include <Magick++.h>
double d_max(double a,double b)
{
return (a>b) ? a : b;
}
int ui_clip(int x,int a,int b)
{
return (x<b) ? b : ((x>a) ? a : x);
}
int transform(int x)
{
return ((x*32+1654)%21+x*11+642)%164%33%16;
}
using namespace std;
using namespace Magick;
int main(int argc,char **argv)
{
InitializeMagick(*argv);
Image img1;
img1.read(argv[1]);
int size_x = img1.columns();
int size_y = img1.rows();
int np = size_x*size_y;
Image out;
out.size(Geometry(size_x,size_y));
double *buff_img1 = new double[3*size_x*size_y];
double *buff_out = new double[3*size_x*size_y];
img1.write(0,0,size_x,size_y,"RGB",DoublePixel,buff_img1);
int ix, iy;
#ifdef __OPENMP
#pragma omp for private(ix,iy) schedule(static)
#endif
for (iy=0;iy<size_y;iy++)
{
for (ix=0;ix<size_x;ix++)
{
int loc = (size_x*iy+ix)*3;
double pimg1[3] = {
buff_img1[3*loc ],
buff_img1[3*loc+1],
buff_img1[3*loc+2]
};
int x1 = (ix*(1+transform(ix)))%size_x;
int y1 = (iy*(1+transform(iy)))%size_y;
int loc1 = ui_clip((size_x*y1+x1)%np,0,np-1)*3;
double out_pix[3] = {
buff_img1[3*loc1 ],
buff_img1[3*loc1+1],
buff_img1[3*loc1+2]
};
buff_out[3*loc ] = abs(out_pix[0]-pimg1[0]);
buff_out[3*loc+1] = abs(out_pix[1]-pimg1[1]);
buff_out[3*loc+2] = abs(out_pix[2]-pimg1[2]);
}
}
out.read(size_x,size_y,"RGB",DoublePixel,buff_out);
out.write("Output.png");
}
And those errors are posted here.
What causes such errors and how can they be fixed?
EDIT: The mentioned behaviour dissapears when I remove the Magick++.h header.
Related
I have a code that is executable without error messages but it seems like it denies to run the code
I call by the "spawnl" command. This is my code and I receive "error=-1". I tried may different ways to solve the situation but I always receive the "-1" for an answer. I use Dev C++ compiler with 32bit release. My problem is to call the other program, sending the name of the file.
#include <stdlib.h>
#include <graphics.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <conio.h>
#include <process.h>
#include <ctype.h>
#include <dir.h>
#include <windows.h>
#include <dos.h>
#include <iostream>
#include <stddef.h>
void translate_to_ascii_files(),
save_mesh_data(),
make_no(),
give_names();
int load_patches(char *);
FILE *memco ;
int outnod[400] ;
float r_vector[21][21][3],cx[500],cy[500],cz[500] ;
int NOP1,NOP2; /* Number Of Points */
int patches;
char nams[26][26];
int num_of_files;
int kk,nv,nh,exnod,totnod ;
int no[4][400];
char filename[26];
void *buf;
COORD coord= {0,0};
HANDLE hConsole;
using namespace std; // std::cout, std::cin
void gotoxy(int x,int y) {
coord.X=x;
coord.Y=y;
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),coord);
}
int main(int argc,char *argv[]) {
char com_nam[26];
int counter1,counter2,i;
int error;
system("cls");
give_names();
printf("give the final filename:");scanf("%s",filename);
for(patches=1;patches<=num_of_files;patches++) {
strcpy(com_nam,nams[patches]);
load_patches(com_nam); /* load patches for meshing*/
i=1;
for(counter1=0;counter1<=NOP1;counter1++) {
for(counter2=0;counter2<=NOP2;counter2++) {
cx[i]=r_vector[counter1][counter2][0];
cy[i]=r_vector[counter1][counter2][1];
cz[i]=r_vector[counter1][counter2][2];
i=i+1;
}
}
nh=NOP1+1;nv=NOP2+1;
make_no();
save_mesh_data();
if(argc ==1){
error=spawnl(P_WAIT,"c:\\cpprog\\unitsrf.exe","",filename,NULL);
if (error ==0) {
else {printf ("error=%d\n",error); system("PAUSE");
} }
else{gotoxy(2,11);printf("error=%s\n\n",argv[1]);
system("PAUSE");
}
} translate_to_ascii_files();
}
sorry to bother. Could you know maybe how can i fix my code. It gives me this error:
/usr/include/eigen3/Eigen/src/Core/DenseCoeffsBase.h:365: Eigen::DenseCoeffsBase<Derived, 1>::Scalar& Eigen::DenseCoeffsBase<Derived, 1>::operator()(Eigen::Index, Eigen::Index) [with Derived = Eigen::Matrix<float, -1, -1>; Eigen::DenseCoeffsBase<Derived, 1>::Scalar = float; Eigen::Index = long int]: Assertion `row >= 0 && row < rows() && col >= 0 && col < cols()' failed.
I think that I declared matrix in right way. My mistake (I think) is when i try to fill her with values in Possible transforms function. I think it might be wrong transform1(0, position)=.. I tried it to comment that lines of code and wrote a simple code like transform1(0, position)=1; and it gave the same error.
Sorry to bother,
Kind regards.
My code :
#include "ros/ros.h"
#include <cstdlib>
#include <fstream>
#include <stdio.h>
#include <regex>
#include "sensor_msgs/PointCloud2.h"
#include <pcl_conversions/pcl_conversions.h>
#include <pcl/point_types.h>
#include <pcl/PCLPointCloud2.h>
#include <pcl/conversions.h>
#include <pcl_ros/transforms.h>
#include <boost/shared_ptr.hpp>
#include "pcl_ros/point_cloud.h"
#include "sensor_msgs/PointField.h"
#include <pcl/io/pcd_io.h>
#include "nav_msgs/Odometry.h"
#include "eigen3/Eigen/SVD"
#include "eigen3/Eigen/Dense"
#include "clustering/Track.h"
#include "eigen3/Eigen/Core"
#include "eigen3/Eigen/Sparse"
using namespace Eigen;
int number_od_possible_tracks = 15;
class Odometry_class {
ros::NodeHandle nodeh;
ros::Subscriber sub;
ros::Publisher pub;
public:
Odometry_class();
void Odometry(const sensor_msgs::PointCloud2 &msg);
bool Has_pointcloud_min3points(pcl::PointCloud<pcl::PointXYZIVSI> cloud);
bool Possible_transform(pcl::PointCloud<pcl::PointXYZIVSI> cloud);
void Restore_Ids();
pcl::PointCloud<pcl::PointXYZIVSI> last_cloud;
Eigen::MatrixXf transform1 = (Eigen::MatrixXf(3,15));
Eigen::MatrixXf transform2=(Eigen::MatrixXf(3,15));
int consecutive_Ids_current[15];
int consecutive_Ids_previous[15];
int position;
void Transform();
};
Odometry_class::Odometry_class(){
sub = nodeh.subscribe("trackers", 10, &Odometry_class::Odometry, this);
pub = nodeh.advertise<nav_msgs::Odometry>("odometry", 10);
}
void Odometry_class::Odometry(const sensor_msgs::PointCloud2 &msg ){
pcl::PCLPointCloud2 pcl_pc2;
pcl_conversions::toPCL(msg, pcl_pc2);
pcl::PointCloud<pcl::PointXYZIVSI> cloud;
pcl::fromPCLPointCloud2(pcl_pc2, cloud);
if(Possible_transform(cloud)){
ROS_INFO("Transformation is possible");
}
else{
ROS_INFO("Transformation is not possible");
}
Restore_Ids();
pcl::fromPCLPointCloud2(pcl_pc2, last_cloud);
}
void Odometry_class::Restore_Ids(){
int i=0;
while(consecutive_Ids_current[i]!=0){
consecutive_Ids_current[i]=0;
consecutive_Ids_previous[i]=0;
i++;
}
}
bool Odometry_class::Has_pointcloud_min3points(pcl::PointCloud<pcl::PointXYZIVSI> cloud){
bool has=false;
if(cloud.width>=3){
has=true;
}
return has;
}
bool Odometry_class::Possible_transform(pcl::PointCloud<pcl::PointXYZIVSI> cloud){
bool possible=false;
position=0;
if(Has_pointcloud_min3points(cloud)&Has_pointcloud_min3points(last_cloud)){
for(int i=0;i<cloud.width;i++){
for(int j=0;j<last_cloud.width;j++){
if(cloud[i].id==last_cloud[j].id){
consecutive_Ids_current[position]=i;
consecutive_Ids_previous[position]=j;
position++;
}
}
}
}
if(position>=3){
possible=true;
transform1.resize(3,position);
transform2.resize(3,position);
for(int i=0;i<position;i++){
transform1(0,position)= cloud[consecutive_Ids_current[i]].x;
transform1(1,position)= cloud[consecutive_Ids_current[i]].y;
transform1(2,position)= cloud[consecutive_Ids_current[i]].z;
transform2(0,position)= cloud[consecutive_Ids_previous[i]].x;
transform2(1,position)= cloud[consecutive_Ids_previous[i]].y;
transform2(2,position)= cloud[consecutive_Ids_previous[i]].z;
}
}
return possible;
}
int main(int argc, char **argv) {
ros::init(argc, argv, "Odometry");
Odometry_class Odometry;
ros::spin();
return 0;
}
I think you mixed up your loop variable, i, and upper limit, position. Using position as an index would result in accessing the matrix out of bounds, and the Eigen library catches that in an assertion. Using the loop variable should resolve the error.
transform1(0,i)= cloud[consecutive_Ids_current[i]].x;
And likewise for the rest of the transform1 and transform2 assignments.
I'm trying to hook some ncurses functions but they don't have any effect.
ncurses isn't statically linked, so I don't see why it wouldn't work.
test.cpp
#include <cstdio>
#include <cstdlib>
#include <curses.h>
int main() {
initscr();
cbreak();
noecho();
getch();
endwin();
return 0;
}
Compiled with: gcc test.cpp -o test -std=c++11 -lncurses
hook.cpp
#include <dlfcn.h>
#include <cstdio>
#include <cstdlib>
int getch() {
typedef int getch ();
getch* old_getch = (getch*) dlsym(RTLD_NEXT, "getch");
int result = old_getch();
fprintf(stderr, "getch() = %i\n", result);
return result;
}
int noecho() {
typedef int noecho ();
noecho* old_noecho = (noecho*) dlsym(RTLD_NEXT, "noecho");
int result = old_noecho();
fprintf(stderr, "noecho() = %i\n", result);
return result;
}
int endwin() {
typedef int endwin ();
endwin* old_endwin = (endwin*) dlsym(RTLD_NEXT, "endwin");
int result = old_endwin();
printf("endwin called");
return result;
}
Compiled with: gcc hook.cpp -o hook.so -shared -ldl -fPIC -std=c++11
It sadly outputs nothing, and I'm completely stumped.
The specification doesn't state getch has to be a function (not a macro). Actually, in ncurses-6.1, getch defined as
#define getch() wgetch(stdscr)
Nonetheless, there is a getch function in libncurses (which simply calls wgetch(stdscr)), so dlsym(libncurses_handle,"getch") does work.
I'm writing a little tool with llvm to parse C and C++ code, but I can't seem to get it to successfully parse C++ at all. I'm probably missing something obvious.
This is what I have so far:
#include <iostream>
#include "llvm/Support/Host.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/raw_ostream.h"
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/CompilerInvocation.h"
#include "clang/Frontend/FrontendOptions.h"
#include "clang/Frontend/LangStandard.h"
#include "clang/Basic/TargetOptions.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/DirectoryLookup.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/AST/RecursiveASTVisitor.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/Parse/ParseAST.h"
class MyASTConsumer : public clang::ASTConsumer {
public:
bool HandleTopLevelDecl(clang::DeclGroupRef d);
virtual ~MyASTConsumer() { }
};
bool MyASTConsumer::HandleTopLevelDecl(clang::DeclGroupRef d)
{
for(auto ii = d.begin(); ii != d.end(); ii++)
{
printf("decl type: %s\n", (*ii)->getDeclKindName());
auto namedDecl = llvm::dyn_cast<clang::NamedDecl>(*ii);
if(namedDecl)
{
printf("name: %s\n", namedDecl->getName().data());
}
}
return true;
}
int main(int, char **argv)
{
using clang::CompilerInstance;
using clang::TargetOptions;
using clang::TargetInfo;
using clang::FileEntry;
using clang::DiagnosticOptions;
using clang::TextDiagnosticPrinter;
using clang::SrcMgr::CharacteristicKind;
using clang::StringRef;
using clang::DirectoryLookup;
using llvm::MemoryBuffer;
using clang::LangOptions;
using clang::FrontendOptions;
using clang::LangStandard;
using clang::CompilerInvocation;
using clang::InitializePreprocessor;
using clang::Preprocessor;
using clang::PreprocessorOptions;
using clang::HeaderSearch;
using clang::HeaderSearchOptions;
CompilerInstance ci;
DiagnosticOptions diagnosticOptions;
ci.createDiagnostics();
CompilerInvocation *invocation = new CompilerInvocation;
LangOptions &langOpts = ci.getLangOpts();
langOpts.RTTI = 1;
langOpts.Bool = 1;
langOpts.CPlusPlus11 = 1;
langOpts.GNUKeywords = 1;
langOpts.CXXExceptions = 1;
langOpts.POSIXThreads = 1;
langOpts.SpellChecking = 1;
invocation->setLangDefaults(langOpts, clang::IK_CXX, LangStandard::lang_gnucxx11);
ci.setInvocation(invocation);
llvm::IntrusiveRefCntPtr<TargetOptions> pto( new TargetOptions() );
pto->Triple = llvm::sys::getDefaultTargetTriple();
llvm::IntrusiveRefCntPtr<TargetInfo> pti(TargetInfo::CreateTargetInfo(ci.getDiagnostics(), pto.getPtr()));
ci.setTarget(pti.getPtr());
ci.createFileManager();
auto &fileManager = ci.getFileManager();
ci.createSourceManager(fileManager);
llvm::IntrusiveRefCntPtr<HeaderSearchOptions> headerSearchOpts( new HeaderSearchOptions() );
ci.createPreprocessor();
auto &pp = ci.getPreprocessor();
pp.setPredefines(builtinMacros);
HeaderSearch &headerSearch = pp.getHeaderSearchInfo();
for(auto &inc: builtinIncludePaths)
{
auto dirEntry = fileManager.getDirectory(StringRef(inc), true);
DirectoryLookup dirLookup(dirEntry, CharacteristicKind::C_System, false);
headerSearch.AddSearchPath (dirLookup, true);
}
MyASTConsumer *astConsumer = new MyASTConsumer();
ci.setASTConsumer(astConsumer);
ci.createASTContext();
const FileEntry *pFile = fileManager.getFile(argv[1]);
auto &sourceManager = ci.getSourceManager();
sourceManager.createMainFileID(pFile);
ci.getDiagnosticClient().BeginSourceFile(
ci.getLangOpts(),
&pp
);
clang::ParseAST(pp, astConsumer, ci.getASTContext());
ci.getDiagnosticClient().EndSourceFile();
return 0;
}
It does parse C just fine, but it errors out on the namespace keyword and extern "C" { blocks. So far I'm stumped. If anyone has a clue, something I'm missing, please share.
I believe I figured out the problem. You should always call setInvocation on the compiler instance before calling a lot of the methods on the compiler instance, as it actually just proxies to the invocation.
I moved the setInvocation call to right after the CompilerInvocation object is created, and things now work.
I am trying to learn how to make a modular program. So what I want to do is read an array of integers.
Main:
#include <stdio.h>
#include <stdlib.h>
#define NMAX 10
void read (int *n, int a[NMAX]);
int main()
{
int n, a[NMAX];
read(&n,a);
return 0;
}
Then I saved this file 'read.cpp':
#include <stdio.h>
#include <stdlib.h>
#define NMAX 10
void read (int *n, int a[NMAX])
{
int i;
printf("dati n:\n");
scanf("%d",n);
for (i=1;i<=*n;i++)
{
printf("a[%d]= ",i);
scanf("%d\n",&a[i]);
}
}
read.cpp compiles succesfully, but when I compile the main function I get the error "no reference to read".
Include read.cpp when compiling.
g++ -o out main.cpp read.cpp
or
add #include "read.cpp" in main program