<![CDATA[Excel file - loop crashout - c++]]>Hey, I've got an unusual one today. I am trying to iterate through a list of cities in excel. have been using the LibXL library without any issues thus far. However for some reason if I want to iterate through 2824 rows everything crashes out. The code works for an iteration of 200 but not more. doesn't really matter which 200 indexes in between 1 and 2825, just always crashes out.
It's a simple loop, nothing much. I thought that maybe the fact that I'm using readStr() makes it consume way more memory so I simplified it just to read it and not store it. same thing. At first I tried a manual way of catching a match (strcmp()) but even if I use an unordered map it doesn't work.
Please help :)

    Book* book = xlCreateBook();
    book->load("file.xls");
    book->setLocale("UTF-8");
    Sheet* sheet = book->getSheet(0);
    unordered_map<string, string> mp;
    for(int i = 1; i < 2826; i++) {
        mp.insert({std::string(sheet->readStr(i, 6)), std::string(sheet->readStr(i, 3))});
    }
]]>https://forum.qt.io/topic/165005/excel-file-loop-crashout-cRSS for NodeFri, 25 Sep 2026 03:56:09 GMTWed, 12 Aug 2026 21:40:32 GMT60<![CDATA[Reply to Excel file - loop crashout - c++ on Fri, 04 Sep 2026 05:36:00 GMT]]>sheet readStr gives you null as there is
somewhere no valid data, print index where it crash

]]>https://forum.qt.io/post/839975https://forum.qt.io/post/839975Fri, 04 Sep 2026 05:36:00 GMT<![CDATA[Reply to Excel file - loop crashout - c++ on Thu, 13 Aug 2026 05:31:36 GMT]]>@jakubd How is this related to Qt?
Did you debug to see where it crashes?
What type of crash is that?
Run in debugger and provide more information to answer above questions.

]]>https://forum.qt.io/post/839692https://forum.qt.io/post/839692Thu, 13 Aug 2026 05:31:36 GMT