New code should use the C99 macro __func__ instead of the pre-Standard
macro __FUNCTION__. Update PatchCheck.py to reject patches with the
latter.

Signed-off-by: Rebecca Cran <rebe...@bsdio.com>
---
 BaseTools/Scripts/PatchCheck.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/BaseTools/Scripts/PatchCheck.py b/BaseTools/Scripts/PatchCheck.py
index 5d17d99a12ef..900226f18fe5 100755
--- a/BaseTools/Scripts/PatchCheck.py
+++ b/BaseTools/Scripts/PatchCheck.py
@@ -491,6 +491,12 @@ class GitDiffCheck:
                                   'but DEBUG_' + mo.group(1) +
                                   ' is now recommended', line)
 
+        rp_file = os.path.realpath(self.filename)
+        rp_script = os.path.realpath(__file__)
+        if line.find('__FUNCTION__') != -1 and rp_file != rp_script:
+            self.added_line_error('__FUNCTION__ was used, but __func__ '
+                                  'is now recommended', line)
+
     split_diff_re = re.compile(r'''
                                    (?P<cmd>
                                        ^ diff \s+ --git \s+ a/.+ \s+ b/.+ $
-- 
2.34.1



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