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codegen: Store returned value if type is 'handle_is_ptr' and function is not 'first_arg_ret'.

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Seems to fix #1230, includes test.
This commit is contained in:
Eduardo Sánchez Muñoz 2018-07-14 01:12:23 +02:00 committed by Andrew Kelley
parent 2a719ee6c5
commit 722b9b9e59
3 changed files with 16 additions and 0 deletions
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4
src/codegen.cpp
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@ -3166,6 +3166,10 @@ static LLVMValueRef ir_render_call(CodeGen *g, IrExecutable *executable, IrInstr
return nullptr;
} else if (first_arg_ret) {
return instruction->tmp_ptr;
} else if (handle_is_ptr(src_return_type)) {
auto store_instr = LLVMBuildStore(g->builder, result, instruction->tmp_ptr);
LLVMSetAlignment(store_instr, LLVMGetAlignment(instruction->tmp_ptr));
return instruction->tmp_ptr;
} else {
return result;
}

1
test/behavior.zig
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@ -9,6 +9,7 @@ comptime {
_ = @import("cases/bitcast.zig");
_ = @import("cases/bool.zig");
_ = @import("cases/bugs/1111.zig");
_ = @import("cases/bugs/1230.zig");
_ = @import("cases/bugs/394.zig");
_ = @import("cases/bugs/655.zig");
_ = @import("cases/bugs/656.zig");

11
test/cases/bugs/1230.zig Normal file
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@ -0,0 +1,11 @@
const S = extern struct {
x: i32,
};
extern fn ret_struct() S {
return S { .x = 0 };
}
test "extern return small struct (bug 1230)" {
const s = ret_struct();
}