Lowering to LLVM fails for constant array of unions with unequal initializer types #1185
Description
In, #1166, is there a reason why setting CommonElementType = nullptr was removed when all the elements don't have the same type?
For example, the following code snippet now fails when lowering to LLVM:
typedef struct {
char a;
} S_1;
typedef struct {
long a, b;
} S_2;
typedef union {
S_1 a;
S_2 b;
} U;
void foo() { U arr[2] = {{.b = {1, 2}}, {.a = {1}}}; }