[Dlang-internal] multiple symbols definitiond caused by an inlining experiment

[Basile B.]

Yesterday I've decided to fix 
https://issues.dlang.org/show_bug.cgi?id=16360.
quite quickly I've managed to fix the case of static structs and 
unions [1] however the linker now complains that the nested 
static stuff is defined several times.

Where should I look at to fix this ?

[1]: 
https://github.com/Basile-z/dmd/commit/89031aa795a055b1365bf0ab62dadcf39cd0c16b