--glsl-version flag for glslangValidator.exe does not work

[mehlian]

Repro:

1. create shader file 'test.vert'

#version 300 es
layout (location = 0) uniform vec4 test;
void main()
{
}

2. test file using glslangValidator.exe
   glslangValidator.exe -S vert --glsl-version 310es test.vert
3. result:
   ERROR: 0:1: 'location qualifier on uniform or buffer' : not supported for this version or the enabled extensions ERROR: 1 compilation errors. No code generated.
4. expected behavior:
   code compiles

After changing #version 300 es in source code to #version 310 es error is gone.

Glslang Version: 11:15.1.0