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-rw-r--r--contrib/cube/cubescan.l1
-rw-r--r--contrib/seg/segscan.l1
2 files changed, 2 insertions, 0 deletions
diff --git a/contrib/cube/cubescan.l b/contrib/cube/cubescan.l
index eb71b11adff..c1849301585 100644
--- a/contrib/cube/cubescan.l
+++ b/contrib/cube/cubescan.l
@@ -32,6 +32,7 @@ void cube_scanner_finish(void);
%option noinput
%option nounput
%option noyywrap
+%option warn
%option prefix="cube_yy"
diff --git a/contrib/seg/segscan.l b/contrib/seg/segscan.l
index c2b5ca87896..e4feab39b37 100644
--- a/contrib/seg/segscan.l
+++ b/contrib/seg/segscan.l
@@ -30,6 +30,7 @@ void seg_scanner_finish(void);
%option noinput
%option nounput
%option noyywrap
+%option warn
%option prefix="seg_yy"