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-rw-r--r--pygments/lexers/c_cpp.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/pygments/lexers/c_cpp.py b/pygments/lexers/c_cpp.py
index bbac406e..35ea517f 100644
--- a/pygments/lexers/c_cpp.py
+++ b/pygments/lexers/c_cpp.py
@@ -28,8 +28,10 @@ class CFamilyLexer(RegexLexer):
#: optional Comment or Whitespace
_ws = r'(?:\s|//.*?\n|/[*].*?[*]/)+'
+
+ # The trailing ?, rather than *, avoids a geometric performance drop here.
#: only one /* */ style comment
- _ws1 = r'\s*(?:/[*].*?[*]/\s*)*'
+ _ws1 = r'\s*(?:/[*].*?[*]/\s*)?'
tokens = {
'whitespace': [