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-rw-r--r--src/glsl/glcpp/glcpp-lex.l13
1 files changed, 12 insertions, 1 deletions
diff --git a/src/glsl/glcpp/glcpp-lex.l b/src/glsl/glcpp/glcpp-lex.l
index 29b27693974..a4c891bdc69 100644
--- a/src/glsl/glcpp/glcpp-lex.l
+++ b/src/glsl/glcpp/glcpp-lex.l
@@ -34,6 +34,8 @@
int glcpp_get_column (yyscan_t yyscanner);
void glcpp_set_column (int column_no , yyscan_t yyscanner);
+#define YY_NO_INPUT
+
#define YY_USER_ACTION \
do { \
yylloc->source = 0; \
@@ -49,7 +51,7 @@ void glcpp_set_column (int column_no , yyscan_t yyscanner);
%option prefix="glcpp_"
%option stack
-%x DONE COMMENT
+%x DONE COMMENT UNREACHABLE
SPACE [[:space:]]
NONSPACE [^[:space:]]
@@ -264,6 +266,15 @@ HEXADECIMAL_INTEGER 0[xX][0-9a-fA-F]+[uU]?
return NEWLINE;
}
+ /* We don't actually use the UNREACHABLE start condition. We
+ only have this action here so that we can pretend to call some
+ generated functions, (to avoid "defined but not used"
+ warnings. */
+<UNREACHABLE>. {
+ unput('.');
+ yy_top_state(yyextra);
+}
+
%%
void