From 9eb51e20ed1a040a617541303db760f80ffd3aa1 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <superjoe30@gmail.com>
Date: Mon, 9 Jul 2018 10:43:29 -0400
Subject: [PATCH] fix crash on @ptrToInt of a *void

closes #1192
---
 src/ir.cpp              | 6 ++++++
 test/compile_errors.zig | 9 +++++++++
 2 files changed, 15 insertions(+)

diff --git a/src/ir.cpp b/src/ir.cpp
index 98b1bd85ad..5e4c847e14 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -19796,6 +19796,12 @@ static TypeTableEntry *ir_analyze_instruction_ptr_to_int(IrAnalyze *ira, IrInstr
         return ira->codegen->builtin_types.entry_invalid;
     }
 
+    if (!type_has_bits(target->value.type)) {
+        ir_add_error(ira, target,
+                buf_sprintf("pointer to size 0 type has no address"));
+        return ira->codegen->builtin_types.entry_invalid;
+    }
+
     if (instr_is_comptime(target)) {
         ConstExprValue *val = ir_resolve_const(ira, target, UndefBad);
         if (!val)
diff --git a/test/compile_errors.zig b/test/compile_errors.zig
index 9071f0ad7e..4ed65e449d 100644
--- a/test/compile_errors.zig
+++ b/test/compile_errors.zig
@@ -1,6 +1,15 @@
 const tests = @import("tests.zig");
 
 pub fn addCases(cases: *tests.CompileErrorContext) void {
+    cases.add(
+        "@ptrToInt on *void",
+        \\export fn entry() bool {
+        \\    return @ptrToInt(&{}) == @ptrToInt(&{});
+        \\}
+    ,
+        ".tmp_source.zig:2:23: error: pointer to size 0 type has no address",
+    );
+
     cases.add(
         "@popCount - non-integer",
         \\export fn entry(x: f32) u32 {