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-rw-r--r--src/glsl/glcpp/glcpp-lex.l10
1 files changed, 9 insertions, 1 deletions
diff --git a/src/glsl/glcpp/glcpp-lex.l b/src/glsl/glcpp/glcpp-lex.l
index 86618870885..b34f2c0e9ad 100644
--- a/src/glsl/glcpp/glcpp-lex.l
+++ b/src/glsl/glcpp/glcpp-lex.l
@@ -70,7 +70,15 @@ HSPACE [ \t]
HASH ^{HSPACE}*#{HSPACE}*
IDENTIFIER [_a-zA-Z][_a-zA-Z0-9]*
PUNCTUATION [][(){}.&*~!/%<>^|;,=+-]
-OTHER [^][(){}.&*~!/%<>^|;,=#[:space:]+-]+
+
+/* The OTHER class is simply a catch-all for things that the CPP
+parser just doesn't care about. Since flex regular expressions that
+match longer strings take priority over those matching shorter
+strings, we have to be careful to avoid OTHER matching and hiding
+something that CPP does care about. So we simply exclude all
+characters that appear in any other expressions. */
+
+OTHER [^][_#[:space:]#a-zA-Z0-9(){}.&*~!/%<>^|;,=+-]
DIGITS [0-9][0-9]*
DECIMAL_INTEGER [1-9][0-9]*[uU]?