diff --git a/doc/src/sgml/plhandler.sgml b/doc/src/sgml/plhandler.sgml
index 20021bce650..c9b804c0752 100644
--- a/doc/src/sgml/plhandler.sgml
+++ b/doc/src/sgml/plhandler.sgml
@@ -201,6 +201,13 @@ CREATE LANGUAGE plsample
     of having a validator is not to let the call handler omit checks, but
     to notify the user immediately if there are obvious errors in a
     <command>CREATE FUNCTION</> command.)
+    While the choice of exactly what to check is mostly left to the
+    discretion of the validator function, note that the core
+    <command>CREATE FUNCTION</> code only executes <literal>SET</> clauses
+    attached to a function when <varname>check_function_bodies</> is on.
+    Therefore, checks whose results might be affected by GUC parameters
+    definitely should be skipped when <varname>check_function_bodies</> is
+    off, to avoid false failures when reloading a dump.
    </para>
 
    <para>
diff --git a/src/backend/catalog/pg_proc.c b/src/backend/catalog/pg_proc.c
index 72559daf549..ca21faf7b43 100644
--- a/src/backend/catalog/pg_proc.c
+++ b/src/backend/catalog/pg_proc.c
@@ -633,24 +633,34 @@ ProcedureCreate(const char *procedureName,
 	/* Verify function body */
 	if (OidIsValid(languageValidator))
 	{
-		ArrayType  *set_items;
-		int			save_nestlevel;
+		ArrayType  *set_items = NULL;
+		int			save_nestlevel = 0;
 
 		/* Advance command counter so new tuple can be seen by validator */
 		CommandCounterIncrement();
 
-		/* Set per-function configuration parameters */
-		set_items = (ArrayType *) DatumGetPointer(proconfig);
-		if (set_items)			/* Need a new GUC nesting level */
+		/*
+		 * Set per-function configuration parameters so that the validation is
+		 * done with the environment the function expects.	However, if
+		 * check_function_bodies is off, we don't do this, because that would
+		 * create dump ordering hazards that pg_dump doesn't know how to deal
+		 * with.  (For example, a SET clause might refer to a not-yet-created
+		 * text search configuration.)	This means that the validator
+		 * shouldn't complain about anything that might depend on a GUC
+		 * parameter when check_function_bodies is off.
+		 */
+		if (check_function_bodies)
 		{
-			save_nestlevel = NewGUCNestLevel();
-			ProcessGUCArray(set_items,
-							(superuser() ? PGC_SUSET : PGC_USERSET),
-							PGC_S_SESSION,
-							GUC_ACTION_SAVE);
+			set_items = (ArrayType *) DatumGetPointer(proconfig);
+			if (set_items)		/* Need a new GUC nesting level */
+			{
+				save_nestlevel = NewGUCNestLevel();
+				ProcessGUCArray(set_items,
+								(superuser() ? PGC_SUSET : PGC_USERSET),
+								PGC_S_SESSION,
+								GUC_ACTION_SAVE);
+			}
 		}
-		else
-			save_nestlevel = 0; /* keep compiler quiet */
 
 		OidFunctionCall1(languageValidator, ObjectIdGetDatum(retval));
 
diff --git a/src/test/regress/expected/guc.out b/src/test/regress/expected/guc.out
index 98671a2bcdf..ef0d807011a 100644
--- a/src/test/regress/expected/guc.out
+++ b/src/test/regress/expected/guc.out
@@ -700,3 +700,19 @@ select myfunc(1), current_setting('work_mem');
  2MB    | 2MB
 (1 row)
 
+-- Normally, CREATE FUNCTION should complain about invalid values in
+-- function SET options; but not if check_function_bodies is off,
+-- because that creates ordering hazards for pg_dump
+create function func_with_bad_set() returns int as $$ select 1 $$
+language sql
+set default_text_search_config = no_such_config;
+NOTICE:  text search configuration "no_such_config" does not exist
+ERROR:  invalid value for parameter "default_text_search_config": "no_such_config"
+set check_function_bodies = off;
+create function func_with_bad_set() returns int as $$ select 1 $$
+language sql
+set default_text_search_config = no_such_config;
+NOTICE:  text search configuration "no_such_config" does not exist
+select func_with_bad_set();
+ERROR:  invalid value for parameter "default_text_search_config": "no_such_config"
+reset check_function_bodies;
diff --git a/src/test/regress/sql/guc.sql b/src/test/regress/sql/guc.sql
index 21ed86f26ba..d7c57a560b8 100644
--- a/src/test/regress/sql/guc.sql
+++ b/src/test/regress/sql/guc.sql
@@ -251,3 +251,21 @@ set work_mem = '1MB';
 select myfunc(0);
 select current_setting('work_mem');
 select myfunc(1), current_setting('work_mem');
+
+-- Normally, CREATE FUNCTION should complain about invalid values in
+-- function SET options; but not if check_function_bodies is off,
+-- because that creates ordering hazards for pg_dump
+
+create function func_with_bad_set() returns int as $$ select 1 $$
+language sql
+set default_text_search_config = no_such_config;
+
+set check_function_bodies = off;
+
+create function func_with_bad_set() returns int as $$ select 1 $$
+language sql
+set default_text_search_config = no_such_config;
+
+select func_with_bad_set();
+
+reset check_function_bodies;