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ir: Don't crash when converting undefined ptrs

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LemonBoy 2020-02-12 20:27:08 +01:00 committed by Andrew Kelley
parent e8dfc5e7f6
commit a090a5e3bc
1 changed files with 9 additions and 2 deletions
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11
src/ir.cpp
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@ -267,6 +267,7 @@ static IrInstGen *ir_analyze_inferred_field_ptr(IrAnalyze *ira, Buf *field_name,
static ResultLoc *no_result_loc(void);
static IrInstGen *ir_analyze_test_non_null(IrAnalyze *ira, IrInst *source_inst, IrInstGen *value);
static IrInstGen *ir_error_dependency_loop(IrAnalyze *ira, IrInst *source_instr);
static IrInstGen *ir_const_undef(IrAnalyze *ira, IrInst *source_instruction, ZigType *ty);
static void destroy_instruction_src(IrInstSrc *inst) {
switch (inst->id) {
@ -12784,13 +12785,19 @@ static IrInstGen *ir_resolve_ptr_of_array_to_unknown_len_ptr(IrAnalyze *ira, IrI
wanted_type = adjust_ptr_align(ira->codegen, wanted_type, get_ptr_align(ira->codegen, value->value->type));
if (instr_is_comptime(value)) {
ZigValue *pointee = const_ptr_pointee(ira, ira->codegen, value->value, source_instr->source_node);
ZigValue *val = ir_resolve_const(ira, value, UndefOk);
if (val == nullptr)
return ira->codegen->invalid_inst_gen;
if (val->special == ConstValSpecialUndef)
return ir_const_undef(ira, source_instr, wanted_type);
ZigValue *pointee = const_ptr_pointee(ira, ira->codegen, val, source_instr->source_node);
if (pointee == nullptr)
return ira->codegen->invalid_inst_gen;
if (pointee->special != ConstValSpecialRuntime) {
IrInstGen *result = ir_const(ira, source_instr, wanted_type);
result->value->data.x_ptr.special = ConstPtrSpecialBaseArray;
result->value->data.x_ptr.mut = value->value->data.x_ptr.mut;
result->value->data.x_ptr.mut = val->data.x_ptr.mut;
result->value->data.x_ptr.data.base_array.array_val = pointee;
result->value->data.x_ptr.data.base_array.elem_index = 0;
return result;