Some people don't know there is a GLSL validator (official). Download version for your system and copy validator from the bin folder: https://github.com/KhronosGroup/glslang/releases (https://github.com/KhronosGroup/glslang/releases)
Example usage:
(https://sun9-70.userapi.com/c854016/v854016248/18fe2b/RJHWvfeus7w.jpg)
It's not an ad or something. Just letting people know about the validator which can save a lot of time.