From e9a4bcbcc6ac89c5526a6baaf2b0df49d0577eb4 Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Thu, 29 Aug 2019 22:44:07 -0400
Subject: fix regressions

---
 src/ir.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/ir.cpp')

diff --git a/src/ir.cpp b/src/ir.cpp
index d53042fedf..dfe9132e2d 100644
--- a/src/ir.cpp
+++ b/src/ir.cpp
@@ -10640,7 +10640,9 @@ static void ir_finish_bb(IrAnalyze *ira) {
 
 static IrInstruction *ir_unreach_error(IrAnalyze *ira) {
     ira->old_bb_index = SIZE_MAX;
-    assert(ira->new_irb.exec->first_err_trace_msg != nullptr);
+    if (ira->new_irb.exec->first_err_trace_msg == nullptr) {
+        ira->new_irb.exec->first_err_trace_msg = ira->codegen->trace_err;
+    }
     return ira->codegen->unreach_instruction;
 }
 
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