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fix crash when assigning too large value to integer

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closes #228
This commit is contained in:
Andrew Kelley 2017-01-31 02:30:10 -05:00
parent d2b94afaf2
commit d8da34c64c
2 changed files with 11 additions and 0 deletions
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5
src/ir.cpp
View File

@ -7591,6 +7591,11 @@ static TypeTableEntry *ir_analyze_instruction_decl_var(IrAnalyze *ira, IrInstruc
var->value.type = result_type;
assert(var->value.type);
if (result_type->id == TypeTableEntryIdInvalid) {
decl_var_instruction->base.other = &decl_var_instruction->base;
return ira->codegen->builtin_types.entry_void;
}
bool is_comptime = ir_get_var_is_comptime(var);
if (casted_init_value->value.special != ConstValSpecialRuntime) {

6
test/run_tests.cpp
View File

@ -1656,6 +1656,12 @@ fn bar() -> i32 {
}
)SOURCE", 1, ".tmp_source.zig:11:9: error: parameter of type '(integer literal)' requires comptime");
add_compile_fail_case("assign too big number to u16", R"SOURCE(
fn foo() {
var vga_mem: u16 = 0xB8000;
}
)SOURCE", 1, ".tmp_source.zig:3:24: error: integer value 753664 cannot be implicitly casted to type 'u16'");
}
//////////////////////////////////////////////////////////////////////////////