From 4676274c9eb222c745c7402d83872b4a28d66f41 Mon Sep 17 00:00:00 2001
From: Alvin Wong <alvin@alvinhc.com>
Date: Sun, 23 Apr 2023 23:52:55 +0800
Subject: [LLD][COFF] Print object file name for unsupported directives

This is a small QoL improvement suggested by FrancescElies in
https://github.com/llvm/llvm-project/issues/56300#issuecomment-1172104966.

Differential Revision: https://reviews.llvm.org/D149022

(cherry picked from commit 9b15e9840f5073aa38939fbef1cb0c64dcc5f02f)
---
 lld/COFF/Driver.cpp                    |  3 ++-
 lld/test/COFF/directives-unsupported.s | 15 +++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 lld/test/COFF/directives-unsupported.s

diff --git a/lld/COFF/Driver.cpp b/lld/COFF/Driver.cpp
index 0a153c8f6cb7..241331b8f161 100644
--- a/lld/COFF/Driver.cpp
+++ b/lld/COFF/Driver.cpp
@@ -438,7 +438,8 @@ void LinkerDriver::parseDirectives(InputFile *file) {
     case OPT_throwingnew:
       break;
     default:
-      error(arg->getSpelling() + " is not allowed in .drectve");
+      error(arg->getSpelling() + " is not allowed in .drectve (" +
+            toString(file) + ")");
     }
   }
 }
diff --git a/lld/test/COFF/directives-unsupported.s b/lld/test/COFF/directives-unsupported.s
new file mode 100644
index 000000000000..1b8231178df8
--- /dev/null
+++ b/lld/test/COFF/directives-unsupported.s
@@ -0,0 +1,15 @@
+# REQUIRES: x86
+
+# RUN: llvm-mc -triple=x86_64-windows %s -filetype=obj -o %t.obj
+
+# RUN: not lld-link -dll -out:%t.dll -entry:entry %t.obj -subsystem:console 2>&1 | FileCheck %s
+
+# CHECK: warning: ignoring unknown argument: -unknowndirectivename
+# CHECK: error: -unknowndirectivename is not allowed in .drectve ({{.*}}.obj)
+
+  .global entry
+  .text
+entry:
+  ret
+  .section .drectve
+  .ascii " -unknowndirectivename "
-- 
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