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Fix too eager comptime evaluation of error ptr

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This commit is contained in:
LemonBoy 2019-05-14 23:30:31 +02:00 committed by Andrew Kelley
parent b660134a18
commit 6672ee9eb3
4 changed files with 56 additions and 23 deletions
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50
src/ir.cpp
View File

@ -21126,17 +21126,19 @@ static IrInstruction *ir_analyze_instruction_unwrap_err_code(IrAnalyze *ira, IrI
ConstExprValue *ptr_val = ir_resolve_const(ira, base_ptr, UndefBad);
if (!ptr_val)
return ira->codegen->invalid_instruction;
ConstExprValue *err_union_val = const_ptr_pointee(ira, ira->codegen, ptr_val, instruction->base.source_node);
if (err_union_val == nullptr)
return ira->codegen->invalid_instruction;
if (err_union_val->special != ConstValSpecialRuntime) {
ErrorTableEntry *err = err_union_val->data.x_err_union.error_set->data.x_err_set;
assert(err);
if (ptr_val->data.x_ptr.mut != ConstPtrMutRuntimeVar) {
ConstExprValue *err_union_val = const_ptr_pointee(ira, ira->codegen, ptr_val, instruction->base.source_node);
if (err_union_val == nullptr)
return ira->codegen->invalid_instruction;
if (err_union_val->special != ConstValSpecialRuntime) {
ErrorTableEntry *err = err_union_val->data.x_err_union.error_set->data.x_err_set;
assert(err);
IrInstruction *result = ir_const(ira, &instruction->base,
type_entry->data.error_union.err_set_type);
result->value.data.x_err_set = err;
return result;
IrInstruction *result = ir_const(ira, &instruction->base,
type_entry->data.error_union.err_set_type);
result->value.data.x_err_set = err;
return result;
}
}
}
@ -21179,21 +21181,23 @@ static IrInstruction *ir_analyze_instruction_unwrap_err_payload(IrAnalyze *ira,
ConstExprValue *ptr_val = ir_resolve_const(ira, value, UndefBad);
if (!ptr_val)
return ira->codegen->invalid_instruction;
ConstExprValue *err_union_val = const_ptr_pointee(ira, ira->codegen, ptr_val, instruction->base.source_node);
if (err_union_val == nullptr)
return ira->codegen->invalid_instruction;
if (err_union_val->special != ConstValSpecialRuntime) {
ErrorTableEntry *err = err_union_val->data.x_err_union.error_set->data.x_err_set;
if (err != nullptr) {
ir_add_error(ira, &instruction->base,
buf_sprintf("caught unexpected error '%s'", buf_ptr(&err->name)));
if (ptr_val->data.x_ptr.mut != ConstPtrMutRuntimeVar) {
ConstExprValue *err_union_val = const_ptr_pointee(ira, ira->codegen, ptr_val, instruction->base.source_node);
if (err_union_val == nullptr)
return ira->codegen->invalid_instruction;
}
if (err_union_val->special != ConstValSpecialRuntime) {
ErrorTableEntry *err = err_union_val->data.x_err_union.error_set->data.x_err_set;
if (err != nullptr) {
ir_add_error(ira, &instruction->base,
buf_sprintf("caught unexpected error '%s'", buf_ptr(&err->name)));
return ira->codegen->invalid_instruction;
}
IrInstruction *result = ir_const(ira, &instruction->base, result_type);
result->value.data.x_ptr.special = ConstPtrSpecialRef;
result->value.data.x_ptr.data.ref.pointee = err_union_val->data.x_err_union.payload;
return result;
IrInstruction *result = ir_const(ira, &instruction->base, result_type);
result->value.data.x_ptr.special = ConstPtrSpecialRef;
result->value.data.x_ptr.data.ref.pointee = err_union_val->data.x_err_union.payload;
return result;
}
}
}

11
src/ir_print.cpp
View File

@ -1941,3 +1941,14 @@ void ir_print(CodeGen *codegen, FILE *f, IrExecutable *executable, int indent_si
}
}
}
void ir_print_instruction(CodeGen *codegen, FILE *f, IrInstruction *instruction, int indent_size) {
IrPrint ir_print = {};
IrPrint *irp = &ir_print;
irp->codegen = codegen;
irp->f = f;
irp->indent = indent_size;
irp->indent_size = indent_size;
ir_print_instruction(irp, instruction);
}

1
src/ir_print.hpp
View File

@ -13,5 +13,6 @@
#include <stdio.h>
void ir_print(CodeGen *codegen, FILE *f, IrExecutable *executable, int indent_size);
void ir_print_instruction(CodeGen *codegen, FILE *f, IrInstruction *instruction, int indent_size);
#endif

17
test/stage1/behavior/if.zig
View File

@ -35,3 +35,20 @@ fn elseIfExpressionF(c: u8) u8 {
return u8(2);
}
}
// #2297
var global_with_val: anyerror!u32 = 0;
var global_with_err: anyerror!u32 = error.SomeError;
test "unwrap mutable global var" {
if (global_with_val) |v| {
expect(v == 0);
} else |e| {
unreachable;
}
if (global_with_err) |_| {
unreachable;
} else |e| {
expect(e == error.SomeError);
}
}