ENV/std: fix error when using older/no clang

Fixes #7482.
2020-05-02 12:22:22 +01:00 · 2020-05-02 12:22:22 +01:00 · 3717815ade
commit 3717815ade
parent 79ac5c5a7d
1 changed files with 1 additions and 1 deletions
--- a/Library/Homebrew/extend/ENV/std.rb
+++ b/Library/Homebrew/extend/ENV/std.rb
@ -112,7 +112,7 @@ module Stdenv
  def clang
    super
    replace_in_cflags(/-Xarch_#{Hardware::CPU.arch_32_bit} (-march=\S*)/, '\1')
-    map = Hardware::CPU.optimization_flags
+    map = Hardware::CPU.optimization_flags.dup
    if DevelopmentTools.clang_build_version < 700
      # Clang mistakenly enables AES-NI on plain Nehalem
      map[:nehalem] = "-march=nehalem -Xclang -target-feature -Xclang -aes"