From d8da34c64c0def6915cead3e16991ed97515ed71 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Tue, 31 Jan 2017 02:30:10 -0500
Subject: [PATCH] fix crash when assigning too large value to integer

closes #228
---
 src/ir.cpp         | 5 +++++
 test/run_tests.cpp | 6 ++++++
 2 files changed, 11 insertions(+)

diff --git a/src/ir.cpp b/src/ir.cpp
index f5604194de..eee938c018 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -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) {
diff --git a/test/run_tests.cpp b/test/run_tests.cpp
index a359bcdea2..987e72aaf9 100644
--- a/test/run_tests.cpp
+++ b/test/run_tests.cpp
@@ -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'");
+
 }
 
 //////////////////////////////////////////////////////////////////////////////