[cfe-dev] Struct init codegen and padding

[Eli Friedman]

On Jan 24, 2008 8:09 PM, Sanghyeon Seo <sanxiyn at gmail.com> wrote:
> This test program crashes in CodeGen.
> struct s { short a; int b; } x = {1, 1};
>
> "struct s" converts to LLVM type {i16, i8, i8, i32}, padded with i8.
> CodeGen attempts llvm::ConstantStruct::get({i16, i8, i8, i32}, {1, 1})
> and crashes, since the type has 4 elements but initializer has only 2.

Here's a fix.  It doesn't completely implement struct initializer
codegen, but it's enough to codegen all fully braced initializers that
don't initialize bitfields.

-Eli
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