QR-Code-Generator | A demo app for QR Code Generation | QRCode Processing library

I am working on a project, based on Embedded Linux and Qt 5.7. On filesystem, I have SVG image file and I want to transform it into PNG Image file. I've searched over internet and found several solutions for achieving such task here. However, I do not have SVG module installed and I was forced to use QIcon approach:

I want to generate a unique QR code with Laravel. I found this link, but I think it doesn't make a unique one every time.

EDIT: I made wrong assumptions here, gcc works fine, read the answer below.

I find pieces of source code, directory structure and other random data from development computer in compiled object files that end up in an executable file after linking.

Of course, this is just random data from compiler's process memory, probably reused buffers that holded source code or other files, not cleaned properly before reuse.

In many cases this is not a problem but sometimes this leakage reveal too much. What I find most problematic about that is it's unpredictability: today it reveals source of some unimportant library, but tomorrow it could reveal some private key or something similar.

Is there some regular way to prevent this, some switch that will force gcc to clean up its buffers between uses or some other solution ?

EDIT:

Ok, here's an example, by compiling qrcodegen.c from:

https://github.com/nayuki/QR-Code-generator/tree/master/c

with this command line:

gcc -c -Wall qrcodegen.c -O9 -o qrcodegen.o

result is here, look at offset 0x668C:

https://drive.google.com/file/d/1WZRlCsjr4CALfi5pmsbd3fLeVsnnxGsa

if linked into executable that content appears in .rdata section exactly as you can see it in object file.

I have a size problem when using TCPDF to generate QR code with only ALPHANUMERICAL characters. My objective: generate the longest URL (with a random part), but keeping the QR code at its lowest size, i.e. 21x21 modules (version1). Documentation (QRcode.com) reports that using only alphanumerical characters set (thonky.com), URL can be 25 characters long with ERC set to L.

Using write2DBarCode with this 25 Alphanumerical URL leads to version1 (21x21mod) QR as expected

Hi I'm using MatLab to generate my QR code, basically this toolbox basing on zxing library.

I need to change the color of the code into blue. I mean the black pattern part needs to be blue. I guess its just the setting, right? But I didn't find the right one to change. Do somebody know how to do it?

Thank you!

Example codes:

I want to generate a series QR codes for my experiments, by using the QR code generator enter link description here. Then I tried to use the code as followed:

I'm using this repository qrcode to generate QR codes

This is my Jquery

i an trying to get the result(image) from url but there is some thing error in the code my code is: