From 2ef84a14345f6237e308b6636b94aa1988a73ee2 Mon Sep 17 00:00:00 2001
From: Joel Rosdahl <joel@rosdahl.net>
Date: Mon, 13 Jul 2020 19:42:24 +0200
Subject: [PATCH] Make is_precompiled_header handle the empty string

Related to PR #624.
---
 src/ccache.cpp | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/ccache.cpp b/src/ccache.cpp
index f7794fc99..d7c15e532 100644
--- a/src/ccache.cpp
+++ b/src/ccache.cpp
@@ -1761,14 +1761,10 @@ find_compiler(Context& ctx, const char* const* argv)
 bool
 is_precompiled_header(const char* path)
 {
-  const char* ext = get_extension(path);
-  char* dir = x_dirname(path);
-  const char* dir_ext = get_extension(dir);
-  bool result =
-    str_eq(ext, ".gch") || str_eq(ext, ".pch") || str_eq(ext, ".pth")
-    || str_eq(dir_ext, ".gch"); // See "Precompiled Headers" in GCC docs.
-  free(dir);
-  return result;
+  // See "Precompiled Headers" in GCC docs.
+  string_view ext = Util::get_extension(path);
+  return ext == ".gch" || ext == ".pch" || ext == ".pth"
+         || Util::get_extension(Util::dir_name(path)) == ".gch";
 }
 
 static void
-- 
2.47.2