From 7195c0ee9c3df499a2e9015e44ddcd2718d03c8b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ole=20Andr=C3=A9=20Vadla=20Ravn=C3=A5s?= <oleavr@gmail.com>
Date: Fri, 27 Mar 2020 05:53:35 +0100
Subject: compilers: Fix accidental coredata mutations

---
 mesonbuild/compilers/objc.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'mesonbuild/compilers/objc.py')

diff --git a/mesonbuild/compilers/objc.py b/mesonbuild/compilers/objc.py
index cc3fba9..52d258d 100644
--- a/mesonbuild/compilers/objc.py
+++ b/mesonbuild/compilers/objc.py
@@ -44,7 +44,8 @@ class ObjCCompiler(CLikeCompiler, Compiler):
         # TODO try to use sanity_check_impl instead of duplicated code
         source_name = os.path.join(work_dir, 'sanitycheckobjc.m')
         binary_name = os.path.join(work_dir, 'sanitycheckobjc')
-        extra_flags = environment.coredata.get_external_args(self.for_machine, self.language)
+        extra_flags = []
+        extra_flags += environment.coredata.get_external_args(self.for_machine, self.language)
         if self.is_cross:
             extra_flags += self.get_compile_only_args()
         else:
-- 
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