From 2a3393eff853fe0a1dee766c859a345186e91fa3 Mon Sep 17 00:00:00 2001
From: "Felix (xq) Queißner" <git@mq32.de>
Date: Thu, 1 Oct 2020 09:40:03 +0200
Subject: Adds error return trace printing to stage1.

---
 src/stage1.zig | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/stage1.zig b/src/stage1.zig
index a989ad4be3..10b85899c2 100644
--- a/src/stage1.zig
+++ b/src/stage1.zig
@@ -39,7 +39,12 @@ pub export fn main(argc: c_int, argv: [*]const [*:0]const u8) c_int {
     for (args) |*arg, i| {
         arg.* = mem.spanZ(argv[i]);
     }
-    stage2.mainArgs(gpa, arena, args) catch |err| fatal("{}", .{@errorName(err)});
+    stage2.mainArgs(gpa, arena, args) catch |err| {
+        if (@errorReturnTrace()) |trace| {
+            std.debug.dumpStackTrace(trace.*);
+        }
+        fatal("unhandled internal error: {}", .{@errorName(err)});
+    };
     return 0;
 }
 
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