EXC BAD ACCESS Error - some help please...

Hi,

I am getting an EXC BAD ACCESS Error when my c++ (I am using XCode) runs with certain files. The program extracts the annotations and highlights from a pdf file and is based on the poppler library. Now I am getting an EXC BAD ACCESS Error when I am working with files created with a certain PDF Viewer (files from other viewers work fine). Below is the (reduced) main function. The error occurs when I use the variable 'text' in the line:

Code:

outputString=std::string(fileName->getCString())+opS+text+"\n";  

When I exclude the variable everything works. Breakpoints suggest that the variable has been optimized away by compiler even though it's used in the line above.

Code:

GooString *getContents() const { return contents; }
char *getCString() const { return s; }

Code:

int main(int argc, char *argv[]) {
    PDFDoc *doc;
    GooString *fileName;
    GBool outputToFile= gFalse;
    std::ofstream outputFile;
    std::string outputString("");
    std::string opS(" ; ");
    Object info;
    char *text;
    
    // read config file
    globalParams = new GlobalParams();

    // get filename
    fileName = new GooString(argv[1]);

    // get pdf document
    doc = PDFDocFactory().createPDFDoc(*fileName, NULL, NULL);

    // iterate through pages
    for (int page = 1; page <= doc->getNumPages(); ++page) {
                
        // get current page
        Page *currentPage= doc->getPage(page);

        // get annotations
        Annots *annots=currentPage->getAnnots(doc->getCatalog());              
                
        // number of attachments
        int n_annots=annots->getNumAnnots();   
                    
        // iterate through annotations
        for (int a = 0; a < n_annots; ++a) {            
            
            // get annotation
            Annot *annot=annots->getAnnot(a);
                        
            // get content of annotation
            text=annot->getContents()->getCString();                 

            // create output line
            outputString=std::string(fileName->getCString())+opS+text+"\n";          

            // output annotation information    
            printf("%s",  outputString.c_str());
            
        }        
    }
 
    return 0;
}

 

HA, now it works! Thanks so much!
I changed the line to

Code:

if(annot->getContents()!=0) text=annot->getContents()->getCString(); 

and set text=""; before that.

I only use 'Text' and 'Highlight' annotations so I thought that they always have defined content field even when it is "". I just excluded this part of the code and the extraction of the highlighted text to make it shorter for the post.

also thanks to wlh99!