shaders macro crash (unwrap called on None value) when attempting to create a buffer of structs which contain arrays

[XoToM]

• Version of vulkano: 0.30.0
• Version of vulkano-shaders: 0.30.0
• Version of bytemuck: 1.8.0
• OS: Windows 10 Pro
• GPU (the selected PhysicalDevice): Nvidia RTX 3070 Laptop
• GPU Driver: 31.0.15.1659

vulkano_shaders::shader!{
	ty: "fragment",
	src: "#version 460

	layout(location = 0) out vec4 fragColor;
	
	struct TestNode {
		uint mask[2];
	};
	
	layout( set = 1, binding = 0) buffer NodeStorage {
		TestNode nodes[];
	};
	
	void main()
	{
		//Placeholder code to prevent the macro from removing unused struct definitions. 
		TestNode abc = nodes[0];
		uint cde = abc.mask[0];
	
		fragColor = vec4(0.0+cde, 0.5, 0.5, 1.0);
	}
	
	
	",
	types_meta: {
		use bytemuck::{Pod, Zeroable};

		#[derive(Clone, Copy, Zeroable, Pod, Default)]
	},
}

fn main() {
	println!("Hello, world!");
}

Issue

The vulkano-shaders macro crashes when the shader code contains a definition of a buffer with an array of structs which have arrays in them. The compilation error given by cargo build:

error: proc macro panicked
  --> src\main.rs:1:1
   |
1  | / vulkano_shaders::shader!{
2  | |     ty: "fragment",
3  | |     src: "#version 460
4  | |
...  |
30 | |     },
31 | | }
   | |_^
   |
   = help: message: called `Option::unwrap()` on a `None` value

error: could not compile `project` due to previous error

This code appears to compile just fine on several glsl compilers (with target set to vulkan), which leads me to believe the macro crashes during the creation of types defined in the shader.

#1220 might be a related issue.

[marc0246]

This was fixed in #1945.