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ir: const_ptr_pointee asserts that its return value is non-null

master
Andrew Kelley 2018-08-26 13:13:26 -04:00
parent 6a3fad1d59
commit 68e2794e15
1 changed files with 9 additions and 4 deletions
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13
src/ir.cpp
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@ -155,18 +155,22 @@ static TypeTableEntry *adjust_slice_align(CodeGen *g, TypeTableEntry *slice_type
ConstExprValue *const_ptr_pointee(CodeGen *g, ConstExprValue *const_val) {
assert(get_codegen_ptr_type(const_val->type) != nullptr);
assert(const_val->special == ConstValSpecialStatic);
ConstExprValue *result;
switch (const_val->data.x_ptr.special) {
case ConstPtrSpecialInvalid:
zig_unreachable();
case ConstPtrSpecialRef:
return const_val->data.x_ptr.data.ref.pointee;
result = const_val->data.x_ptr.data.ref.pointee;
break;
case ConstPtrSpecialBaseArray:
expand_undef_array(g, const_val->data.x_ptr.data.base_array.array_val);
return &const_val->data.x_ptr.data.base_array.array_val->data.x_array.s_none.elements[
result = &const_val->data.x_ptr.data.base_array.array_val->data.x_array.s_none.elements[
const_val->data.x_ptr.data.base_array.elem_index];
break;
case ConstPtrSpecialBaseStruct:
return &const_val->data.x_ptr.data.base_struct.struct_val->data.x_struct.fields[
result = &const_val->data.x_ptr.data.base_struct.struct_val->data.x_struct.fields[
const_val->data.x_ptr.data.base_struct.field_index];
break;
case ConstPtrSpecialHardCodedAddr:
zig_unreachable();
case ConstPtrSpecialDiscard:
@ -174,7 +178,8 @@ ConstExprValue *const_ptr_pointee(CodeGen *g, ConstExprValue *const_val) {
case ConstPtrSpecialFunction:
zig_unreachable();
}
zig_unreachable();
assert(result != nullptr);
return result;
}
static bool ir_should_inline(IrExecutable *exec, Scope *scope) {