Shader DebugInfo doesn't give correct string name for same type

[spencer-lunarg]

(see with -gVS https://godbolt.org/z/9o3TdvYTn)

#version 450
#extension GL_EXT_shader_8bit_storage: enable
#extension GL_EXT_shader_explicit_arithmetic_types_int8: enable

struct Foo {
    uint a;
};

layout(push_constant) uniform PushConstant {
    uint b;
    Foo foo;
    vec4 c;
} data;

void main(){
    gl_Position = data.c;
}

There is not a OpString for both "a" and "b" so this is generating

%16 = OpString "a"
%17 = OpString "Foo"
%20 = OpString "PushConstant"

%member_a = OpExtInst %26 %1 DebugTypeMember %16 %32 %35 %30 %64 %31 %31 %33
%66 = OpExtInst %26 %1 DebugTypeComposite %17 %37 %35 %55 %31 %40 %17 %31 %33 %member_a

%member_b = OpExtInst %26 %1 DebugTypeMember %16 %32 %35 %30 %64 %31 %31 %33
%73 = OpExtInst %26 %1 DebugTypeComposite %20 %37 %35 %55 %31 %40 %20 %31 %33 %member_b %70 %72

and results and showing a VVL error message of data.a when it should be data.b

also the Line is 6 so there is this is just fully wrong