creduce: depend on llvm@5

Closes #25090.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>

Formula/creduce.rb

@@ -1,7 +1,7 @@
 class Creduce < Formula
   desc "Reduce a C/C++ program while keeping a property of interest"
   homepage "https://embed.cs.utah.edu/creduce/"
-  revision 2
+  revision 3
   head "https://github.com/csmith-project/creduce.git"
 
   stable do
@@ -26,7 +26,7 @@ class Creduce < Formula
 
   depends_on "astyle"
   depends_on "delta"
-  depends_on "llvm"
+  depends_on "llvm@5"
 
   depends_on :macos => :mavericks
 
@@ -68,7 +68,7 @@ class Creduce < Formula
     ENV.prepend_create_path "PERL5LIB", libexec/"lib/perl5"
 
     # Avoid ending up with llvm's Cellar path hard coded.
-    ENV["CLANG_FORMAT"] = Formula["llvm"].opt_bin/"clang-format"
+    ENV["CLANG_FORMAT"] = Formula["llvm@5"].opt_bin/"clang-format"
 
     resources.each do |r|
       r.stage do
@@ -80,7 +80,7 @@ class Creduce < Formula
 
     system "./configure", "--prefix=#{prefix}",
                           "--disable-dependency-tracking",
-                          "--with-llvm=#{Formula["llvm"].opt_prefix}",
+                          "--with-llvm=#{Formula["llvm@5"].opt_prefix}",
                           "--bindir=#{libexec}"
     system "make"
     system "make", "install"