5 files changed, 17 insertions, 1 deletions
diff --git a/src/backend/bootstrap/bootscanner.l b/src/backend/bootstrap/bootscanner.l
index 51c5e5e3cd6..5465217bc30 100644
--- a/src/backend/bootstrap/bootscanner.l
+++ b/src/backend/bootstrap/bootscanner.l
@@ -38,6 +38,7 @@
 /* Not needed now that this file is compiled as part of bootparse. */
 /* #include "bootparse.h" */
 
+/* LCOV_EXCL_START */
 
 /* Avoid exit() on fatal scanner errors (a bit ugly -- see yy_fatal_error) */
 #undef fprintf
@@ -134,6 +135,8 @@ insert			{ return INSERT_TUPLE; }
 
 %%
 
+/* LCOV_EXCL_STOP */
+
 void
 yyerror(const char *message)
 {
diff --git a/src/backend/parser/scan.l b/src/backend/parser/scan.l
index 634bfa512f4..6af2199cdc5 100644
--- a/src/backend/parser/scan.l
+++ b/src/backend/parser/scan.l
@@ -41,6 +41,9 @@
 }
 
 %{
+
+/* LCOV_EXCL_START */
+
 /* Avoid exit() on fatal scanner errors (a bit ugly -- see yy_fatal_error) */
 #undef fprintf
 #define fprintf(file, fmt, msg)  fprintf_to_ereport(fmt, msg)
@@ -1011,6 +1014,8 @@ other			.
 
 %%
 
+/* LCOV_EXCL_STOP */
+
 /*
  * Arrange access to yyextra for subroutines of the main yylex() function.
  * We expect each subroutine to have a yyscanner parameter.  Rather than
diff --git a/src/backend/replication/repl_scanner.l b/src/backend/replication/repl_scanner.l
index 62bb5288c01..568d55ac953 100644
--- a/src/backend/replication/repl_scanner.l
+++ b/src/backend/replication/repl_scanner.l
@@ -38,6 +38,8 @@ static char *litbufdup(void);
 static void addlit(char *ytext, int yleng);
 static void addlitchar(unsigned char ychar);
 
+/* LCOV_EXCL_START */
+
 %}
 
 %option 8bit
@@ -186,6 +188,7 @@ WAIT				{ return K_WAIT; }
 				}
 %%
 
+/* LCOV_EXCL_STOP */
 
 static void
 startlit(void)
diff --git a/src/backend/replication/syncrep_scanner.l b/src/backend/replication/syncrep_scanner.l
index d1d1b26a480..1fbc936aa6f 100644
--- a/src/backend/replication/syncrep_scanner.l
+++ b/src/backend/replication/syncrep_scanner.l
@@ -32,6 +32,8 @@ static YY_BUFFER_STATE scanbufhandle;
 
 static StringInfoData xdbuf;
 
+/* LCOV_EXCL_START */
+
 %}
 
 %option 8bit
@@ -112,6 +114,7 @@ xdinside		[^"]+
 .			{ return JUNK; }
 %%
 
+/* LCOV_EXCL_STOP */
 
 /* Needs to be here for access to yytext */
 void
diff --git a/src/backend/utils/misc/guc-file.l b/src/backend/utils/misc/guc-file.l
index f01b814c6ed..3de8e791f21 100644
--- a/src/backend/utils/misc/guc-file.l
+++ b/src/backend/utils/misc/guc-file.l
@@ -57,6 +57,8 @@ static void record_config_file_error(const char *errmsg,
 static int	GUC_flex_fatal(const char *msg);
 static char *GUC_scanstr(const char *s);
 
+/* LCOV_EXCL_START */
+
 %}
 
 %option 8bit
@@ -107,7 +109,7 @@ STRING			\'([^'\\\n]|\\.|\'\')*\'
 
 %%
 
-
+/* LCOV_EXCL_STOP */
 
 /*
  * Exported function to read and process the configuration file. The