Convert the geometric input functions to report errors softly.

Convert box_in, circle_in, line_in, lseg_in, path_in, point_in,
and poly_in to the new style.

line_in still throws hard errors for overflows/underflows that can occur
when the input is specified as two points rather than in the canonical
"Ax + By + C = 0" style.  I'm not too concerned about that: it won't be
reached in normal dump/restore cases, and it's fairly debatable that
such conversion should ever have been made part of a type input function
in the first place.  But in any case, I don't want to extend the soft
error conventions into float.h without more discussion than this patch
has had.

Amul Sul, minor mods by me

Discussion: https://postgr.es/m/CAAJ_b97KeDWUdpTKGOaFYPv0OicjOu6EW+QYWj-Ywrgj_aEy1g@mail.gmail.com

src/backend/utils/adt/geo_ops.c

@@ -31,6 +31,7 @@
 
 #include "libpq/pqformat.h"
 #include "miscadmin.h"
+#include "nodes/miscnodes.h"
 #include "utils/float.h"
 #include "utils/fmgrprotos.h"
 #include "utils/geo_decls.h"
@@ -130,16 +131,19 @@ static bool plist_same(int npts, Point *p1, Point *p2);
 static float8 dist_ppoly_internal(Point *pt, POLYGON *poly);
 
 /* Routines for encoding and decoding */
-static float8 single_decode(char *num, char **endptr_p,
+static bool single_decode(char *num, float8 *x, char **endptr_p,
-							const char *type_name, const char *orig_string);
+						  const char *type_name, const char *orig_string,
+						  Node *escontext);
 static void single_encode(float8 x, StringInfo str);
-static void pair_decode(char *str, float8 *x, float8 *y, char **endptr_p,
+static bool pair_decode(char *str, float8 *x, float8 *y, char **endptr_p,
-						const char *type_name, const char *orig_string);
+						const char *type_name, const char *orig_string,
+						Node *escontext);
 static void pair_encode(float8 x, float8 y, StringInfo str);
 static int	pair_count(char *s, char delim);
-static void path_decode(char *str, bool opentype, int npts, Point *p,
+static bool path_decode(char *str, bool opentype, int npts, Point *p,
 						bool *isopen, char **endptr_p,
-						const char *type_name, const char *orig_string);
+						const char *type_name, const char *orig_string,
+						Node *escontext);
 static char *path_encode(enum path_delim path_delim, int npts, Point *pt);
 
 
@@ -185,11 +189,13 @@ static char *path_encode(enum path_delim path_delim, int npts, Point *pt);
  *	and restore that order for text output - tgl 97/01/16
  */
 
-static float8
+static bool
-single_decode(char *num, char **endptr_p,
+single_decode(char *num, float8 *x, char **endptr_p,
-			  const char *type_name, const char *orig_string)
+			  const char *type_name, const char *orig_string,
+			  Node *escontext)
 {
-	return float8in_internal(num, endptr_p, type_name, orig_string, NULL);
+	*x = float8in_internal(num, endptr_p, type_name, orig_string, escontext);
+	return (!SOFT_ERROR_OCCURRED(escontext));
 }								/* single_decode() */
 
 static void
@@ -201,9 +207,10 @@ single_encode(float8 x, StringInfo str)
 	pfree(xstr);
 }								/* single_encode() */
 
-static void
+static bool
 pair_decode(char *str, float8 *x, float8 *y, char **endptr_p,
-			const char *type_name, const char *orig_string)
+			const char *type_name, const char *orig_string,
+			Node *escontext)
 {
 	bool		has_delim;
 
@@ -212,23 +219,19 @@ pair_decode(char *str, float8 *x, float8 *y, char **endptr_p,
 	if ((has_delim = (*str == LDELIM)))
 		str++;
 
-	*x = float8in_internal(str, &str, type_name, orig_string, NULL);
+	if (!single_decode(str, x, &str, type_name, orig_string, escontext))
+		return false;
 
 	if (*str++ != DELIM)
-		ereport(ERROR,
+		goto fail;
-				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
-				 errmsg("invalid input syntax for type %s: \"%s\"",
-						type_name, orig_string)));
 
-	*y = float8in_internal(str, &str, type_name, orig_string, NULL);
+	if (!single_decode(str, y, &str, type_name, orig_string, escontext))
+		return false;
 
 	if (has_delim)
 	{
 		if (*str++ != RDELIM)
-			ereport(ERROR,
+			goto fail;
-					(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
-					 errmsg("invalid input syntax for type %s: \"%s\"",
-							type_name, orig_string)));
 		while (isspace((unsigned char) *str))
 			str++;
 	}
@@ -237,10 +240,14 @@ pair_decode(char *str, float8 *x, float8 *y, char **endptr_p,
 	if (endptr_p)
 		*endptr_p = str;
 	else if (*str != '\0')
-		ereport(ERROR,
+		goto fail;
-				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+	return true;
-				 errmsg("invalid input syntax for type %s: \"%s\"",
+
-						type_name, orig_string)));
+fail:
+	ereturn(escontext, false,
+			(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+			 errmsg("invalid input syntax for type %s: \"%s\"",
+					type_name, orig_string)));
 }
 
 static void
@@ -254,10 +261,11 @@ pair_encode(float8 x, float8 y, StringInfo str)
 	pfree(ystr);
 }
 
-static void
+static bool
 path_decode(char *str, bool opentype, int npts, Point *p,
 			bool *isopen, char **endptr_p,
-			const char *type_name, const char *orig_string)
+			const char *type_name, const char *orig_string,
+			Node *escontext)
 {
 	int			depth = 0;
 	char	   *cp;
@@ -269,10 +277,7 @@ path_decode(char *str, bool opentype, int npts, Point *p,
 	{
 		/* no open delimiter allowed? */
 		if (!opentype)
-			ereport(ERROR,
+			goto fail;
-					(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
-					 errmsg("invalid input syntax for type %s: \"%s\"",
-							type_name, orig_string)));
 		depth++;
 		str++;
 	}
@@ -295,7 +300,9 @@ path_decode(char *str, bool opentype, int npts, Point *p,
 
 	for (i = 0; i < npts; i++)
 	{
-		pair_decode(str, &(p->x), &(p->y), &str, type_name, orig_string);
+		if (!pair_decode(str, &(p->x), &(p->y), &str, type_name, orig_string,
+						 escontext))
+			return false;
 		if (*str == DELIM)
 			str++;
 		p++;
@@ -311,20 +318,21 @@ path_decode(char *str, bool opentype, int npts, Point *p,
 				str++;
 		}
 		else
-			ereport(ERROR,
+			goto fail;
-					(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
-					 errmsg("invalid input syntax for type %s: \"%s\"",
-							type_name, orig_string)));
 	}
 
 	/* report stopping point if wanted, else complain if not end of string */
 	if (endptr_p)
 		*endptr_p = str;
 	else if (*str != '\0')
-		ereport(ERROR,
+		goto fail;
-				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+	return true;
-				 errmsg("invalid input syntax for type %s: \"%s\"",
+
-						type_name, orig_string)));
+fail:
+	ereturn(escontext, false,
+			(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+			 errmsg("invalid input syntax for type %s: \"%s\"",
+					type_name, orig_string)));
 }								/* path_decode() */
 
 static char *
@@ -413,12 +421,15 @@ Datum
 box_in(PG_FUNCTION_ARGS)
 {
 	char	   *str = PG_GETARG_CSTRING(0);
+	Node	   *escontext = fcinfo->context;
 	BOX		   *box = (BOX *) palloc(sizeof(BOX));
 	bool		isopen;
 	float8		x,
 				y;
 
-	path_decode(str, false, 2, &(box->high), &isopen, NULL, "box", str);
+	if (!path_decode(str, false, 2, &(box->high), &isopen, NULL, "box", str,
+					 escontext))
+		PG_RETURN_NULL();
 
 	/* reorder corners if necessary... */
 	if (float8_lt(box->high.x, box->low.x))
@@ -935,29 +946,39 @@ box_diagonal(PG_FUNCTION_ARGS)
  ***********************************************************************/
 
 static bool
-line_decode(char *s, const char *str, LINE *line)
+line_decode(char *s, const char *str, LINE *line, Node *escontext)
 {
 	/* s was already advanced over leading '{' */
-	line->A = single_decode(s, &s, "line", str);
+	if (!single_decode(s, &line->A, &s, "line", str, escontext))
+		return false;
 	if (*s++ != DELIM)
+		goto fail;
+	if (!single_decode(s, &line->B, &s, "line", str, escontext))
 		return false;
-	line->B = single_decode(s, &s, "line", str);
 	if (*s++ != DELIM)
+		goto fail;
+	if (!single_decode(s, &line->C, &s, "line", str, escontext))
 		return false;
-	line->C = single_decode(s, &s, "line", str);
 	if (*s++ != RDELIM_L)
-		return false;
+		goto fail;
 	while (isspace((unsigned char) *s))
 		s++;
 	if (*s != '\0')
-		return false;
+		goto fail;
 	return true;
+
+fail:
+	ereturn(escontext, false,
+			(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
+			 errmsg("invalid input syntax for type %s: \"%s\"",
+					"line", str)));
 }
 
 Datum
 line_in(PG_FUNCTION_ARGS)
 {
 	char	   *str = PG_GETARG_CSTRING(0);
+	Node	   *escontext = fcinfo->context;
 	LINE	   *line = (LINE *) palloc(sizeof(LINE));
 	LSEG		lseg;
 	bool		isopen;
@@ -968,23 +989,28 @@ line_in(PG_FUNCTION_ARGS)
 		s++;
 	if (*s == LDELIM_L)
 	{
-		if (!line_decode(s + 1, str, line))
+		if (!line_decode(s + 1, str, line, escontext))
-			ereport(ERROR,
+			PG_RETURN_NULL();
-					(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
-					 errmsg("invalid input syntax for type %s: \"%s\"",
-							"line", str)));
 		if (FPzero(line->A) && FPzero(line->B))
-			ereport(ERROR,
+			ereturn(escontext, (Datum) 0,
 					(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 					 errmsg("invalid line specification: A and B cannot both be zero")));
 	}
 	else
 	{
-		path_decode(s, true, 2, &lseg.p[0], &isopen, NULL, "line", str);
+		if (!path_decode(s, true, 2, &lseg.p[0], &isopen, NULL, "line", str,
+						 escontext))
+			PG_RETURN_NULL();
 		if (point_eq_point(&lseg.p[0], &lseg.p[1]))
-			ereport(ERROR,
+			ereturn(escontext, (Datum) 0,
 					(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 					 errmsg("invalid line specification: must be two distinct points")));
+
+		/*
+		 * XXX lseg_sl() and line_construct() can throw overflow/underflow
+		 * errors.  Eventually we should allow those to be soft, but the
+		 * notational pain seems to outweigh the value for now.
+		 */
 		line_construct(line, &lseg.p[0], lseg_sl(&lseg));
 	}
 
@@ -1375,6 +1401,7 @@ Datum
 path_in(PG_FUNCTION_ARGS)
 {
 	char	   *str = PG_GETARG_CSTRING(0);
+	Node	   *escontext = fcinfo->context;
 	PATH	   *path;
 	bool		isopen;
 	char	   *s;
@@ -1384,7 +1411,7 @@ path_in(PG_FUNCTION_ARGS)
 	int			depth = 0;
 
 	if ((npts = pair_count(str, ',')) <= 0)
-		ereport(ERROR,
+		ereturn(escontext, (Datum) 0,
 				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 				 errmsg("invalid input syntax for type %s: \"%s\"",
 						"path", str)));
@@ -1405,7 +1432,7 @@ path_in(PG_FUNCTION_ARGS)
 
 	/* Check for integer overflow */
 	if (base_size / npts != sizeof(path->p[0]) || size <= base_size)
-		ereport(ERROR,
+		ereturn(escontext, (Datum) 0,
 				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
 				 errmsg("too many points requested")));
 
@@ -1414,12 +1441,14 @@ path_in(PG_FUNCTION_ARGS)
 	SET_VARSIZE(path, size);
 	path->npts = npts;
 
-	path_decode(s, true, npts, &(path->p[0]), &isopen, &s, "path", str);
+	if (!path_decode(s, true, npts, &(path->p[0]), &isopen, &s, "path", str,
+					 escontext))
+		PG_RETURN_NULL();
 
 	if (depth >= 1)
 	{
 		if (*s++ != RDELIM)
-			ereport(ERROR,
+			ereturn(escontext, (Datum) 0,
 					(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 					 errmsg("invalid input syntax for type %s: \"%s\"",
 							"path", str)));
@@ -1427,7 +1456,7 @@ path_in(PG_FUNCTION_ARGS)
 			s++;
 	}
 	if (*s != '\0')
-		ereport(ERROR,
+		ereturn(escontext, (Datum) 0,
 				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 				 errmsg("invalid input syntax for type %s: \"%s\"",
 						"path", str)));
@@ -1803,7 +1832,8 @@ point_in(PG_FUNCTION_ARGS)
 	char	   *str = PG_GETARG_CSTRING(0);
 	Point	   *point = (Point *) palloc(sizeof(Point));
 
-	pair_decode(str, &point->x, &point->y, NULL, "point", str);
+	/* Ignore failure from pair_decode, since our return value won't matter */
+	pair_decode(str, &point->x, &point->y, NULL, "point", str, fcinfo->context);
 	PG_RETURN_POINT_P(point);
 }
 
@@ -2034,10 +2064,14 @@ Datum
 lseg_in(PG_FUNCTION_ARGS)
 {
 	char	   *str = PG_GETARG_CSTRING(0);
+	Node	   *escontext = fcinfo->context;
 	LSEG	   *lseg = (LSEG *) palloc(sizeof(LSEG));
 	bool		isopen;
 
-	path_decode(str, true, 2, &lseg->p[0], &isopen, NULL, "lseg", str);
+	if (!path_decode(str, true, 2, &lseg->p[0], &isopen, NULL, "lseg", str,
+					 escontext))
+		PG_RETURN_NULL();
+
 	PG_RETURN_LSEG_P(lseg);
 }
 
@@ -3380,6 +3414,7 @@ Datum
 poly_in(PG_FUNCTION_ARGS)
 {
 	char	   *str = PG_GETARG_CSTRING(0);
+	Node	   *escontext = fcinfo->context;
 	POLYGON    *poly;
 	int			npts;
 	int			size;
@@ -3387,7 +3422,7 @@ poly_in(PG_FUNCTION_ARGS)
 	bool		isopen;
 
 	if ((npts = pair_count(str, ',')) <= 0)
-		ereport(ERROR,
+		ereturn(escontext, (Datum) 0,
 				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 				 errmsg("invalid input syntax for type %s: \"%s\"",
 						"polygon", str)));
@@ -3397,7 +3432,7 @@ poly_in(PG_FUNCTION_ARGS)
 
 	/* Check for integer overflow */
 	if (base_size / npts != sizeof(poly->p[0]) || size <= base_size)
-		ereport(ERROR,
+		ereturn(escontext, (Datum) 0,
 				(errcode(ERRCODE_PROGRAM_LIMIT_EXCEEDED),
 				 errmsg("too many points requested")));
 
@@ -3406,7 +3441,9 @@ poly_in(PG_FUNCTION_ARGS)
 	SET_VARSIZE(poly, size);
 	poly->npts = npts;
 
-	path_decode(str, false, npts, &(poly->p[0]), &isopen, NULL, "polygon", str);
+	if (!path_decode(str, false, npts, &(poly->p[0]), &isopen, NULL, "polygon",
+					 str, escontext))
+		PG_RETURN_NULL();
 
 	make_bound_box(poly);
 
@@ -4573,6 +4610,7 @@ Datum
 circle_in(PG_FUNCTION_ARGS)
 {
 	char	   *str = PG_GETARG_CSTRING(0);
+	Node	   *escontext = fcinfo->context;
 	CIRCLE	   *circle = (CIRCLE *) palloc(sizeof(CIRCLE));
 	char	   *s,
 			   *cp;
@@ -4594,15 +4632,19 @@ circle_in(PG_FUNCTION_ARGS)
 	}
 
 	/* pair_decode will consume parens around the pair, if any */
-	pair_decode(s, &circle->center.x, &circle->center.y, &s, "circle", str);
+	if (!pair_decode(s, &circle->center.x, &circle->center.y, &s, "circle", str,
+					 escontext))
+		PG_RETURN_NULL();
 
 	if (*s == DELIM)
 		s++;
 
-	circle->radius = single_decode(s, &s, "circle", str);
+	if (!single_decode(s, &circle->radius, &s, "circle", str, escontext))
+		PG_RETURN_NULL();
+
 	/* We have to accept NaN. */
 	if (circle->radius < 0.0)
-		ereport(ERROR,
+		ereturn(escontext, (Datum) 0,
 				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 				 errmsg("invalid input syntax for type %s: \"%s\"",
 						"circle", str)));
@@ -4617,14 +4659,14 @@ circle_in(PG_FUNCTION_ARGS)
 				s++;
 		}
 		else
-			ereport(ERROR,
+			ereturn(escontext, (Datum) 0,
 					(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 					 errmsg("invalid input syntax for type %s: \"%s\"",
 							"circle", str)));
 	}
 
 	if (*s != '\0')
-		ereport(ERROR,
+		ereturn(escontext, (Datum) 0,
 				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 				 errmsg("invalid input syntax for type %s: \"%s\"",
 						"circle", str)));

src/test/regress/expected/box.out

@@ -639,3 +639,28 @@ WHERE seq.id IS NULL OR idx.id IS NULL;
 RESET enable_seqscan;
 RESET enable_indexscan;
 RESET enable_bitmapscan;
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('200', 'box');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('200', 'box');
+          pg_input_error_message          
+------------------------------------------
+ invalid input syntax for type box: "200"
+(1 row)
+
+SELECT pg_input_is_valid('((200,300),(500, xyz))', 'box');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('((200,300),(500, xyz))', 'box');
+                   pg_input_error_message                    
+-------------------------------------------------------------
+ invalid input syntax for type box: "((200,300),(500, xyz))"
+(1 row)
+

src/test/regress/expected/geometry.out

@@ -5295,3 +5295,28 @@ SELECT * FROM polygon_tbl WHERE f1 @> '((1,1),(2,2),(2,1))'::polygon
  ((2,0),(2,4),(0,0))
 (1 row)
 
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('(1', 'circle');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('1,', 'circle');
+           pg_input_error_message           
+--------------------------------------------
+ invalid input syntax for type circle: "1,"
+(1 row)
+
+SELECT pg_input_is_valid('(1,2),-1', 'circle');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('(1,2),-1', 'circle');
+              pg_input_error_message              
+--------------------------------------------------
+ invalid input syntax for type circle: "(1,2),-1"
+(1 row)
+

src/test/regress/expected/line.out

@@ -85,3 +85,64 @@ select '{nan, 1, nan}'::line = '{nan, 1, nan}'::line as true,
  t    | f
 (1 row)
 
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('{1, 1}', 'line');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('{1, 1}', 'line');
+            pg_input_error_message            
+----------------------------------------------
+ invalid input syntax for type line: "{1, 1}"
+(1 row)
+
+SELECT pg_input_is_valid('{0, 0, 0}', 'line');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('{0, 0, 0}', 'line');
+                 pg_input_error_message                  
+---------------------------------------------------------
+ invalid line specification: A and B cannot both be zero
+(1 row)
+
+SELECT pg_input_is_valid('{1, 1, a}', 'line');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('{1, 1, a}', 'line');
+             pg_input_error_message              
+-------------------------------------------------
+ invalid input syntax for type line: "{1, 1, a}"
+(1 row)
+
+SELECT pg_input_is_valid('{1, 1, 1e400}', 'line');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('{1, 1, 1e400}', 'line');
+              pg_input_error_message               
+---------------------------------------------------
+ "1e400" is out of range for type double precision
+(1 row)
+
+SELECT pg_input_is_valid('(1, 1), (1, 1e400)', 'line');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('(1, 1), (1, 1e400)', 'line');
+              pg_input_error_message               
+---------------------------------------------------
+ "1e400" is out of range for type double precision
+(1 row)
+

src/test/regress/expected/lseg.out

@@ -42,3 +42,16 @@ select * from LSEG_TBL;
  [(NaN,1),(NaN,90)]
 (8 rows)
 
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('[(1,2),(3)]', 'lseg');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('[(1,2),(3)]', 'lseg');
+              pg_input_error_message               
+---------------------------------------------------
+ invalid input syntax for type lseg: "[(1,2),(3)]"
+(1 row)
+

src/test/regress/expected/path.out

@@ -80,3 +80,28 @@ SELECT popen(f1) AS open_path FROM PATH_TBL;
  [(11,12),(13,14)]
 (9 rows)
 
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('[(1,2),(3)]', 'path');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('[(1,2),(3)]', 'path');
+              pg_input_error_message               
+---------------------------------------------------
+ invalid input syntax for type path: "[(1,2),(3)]"
+(1 row)
+
+SELECT pg_input_is_valid('[(1,2,6),(3,4,6)]', 'path');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('[(1,2,6),(3,4,6)]', 'path');
+                 pg_input_error_message                  
+---------------------------------------------------------
+ invalid input syntax for type path: "[(1,2,6),(3,4,6)]"
+(1 row)
+

src/test/regress/expected/point.out

@@ -463,3 +463,16 @@ SELECT COUNT(*) FROM point_gist_tbl WHERE f1 ~= '(0.0000018,0.0000018)'::point;
 RESET enable_seqscan;
 RESET enable_indexscan;
 RESET enable_bitmapscan;
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('1,y', 'point');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('1,y', 'point');
+           pg_input_error_message           
+--------------------------------------------
+ invalid input syntax for type point: "1,y"
+(1 row)
+

src/test/regress/expected/polygon.out

@@ -306,3 +306,28 @@ WHERE seq.id IS NULL OR idx.id IS NULL;
 RESET enable_seqscan;
 RESET enable_indexscan;
 RESET enable_bitmapscan;
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('(2.0,0.8,0.1)', 'polygon');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('(2.0,0.8,0.1)', 'polygon');
+                 pg_input_error_message                 
+--------------------------------------------------------
+ invalid input syntax for type polygon: "(2.0,0.8,0.1)"
+(1 row)
+
+SELECT pg_input_is_valid('(2.0,xyz)', 'polygon');
+ pg_input_is_valid 
+-------------------
+ f
+(1 row)
+
+SELECT pg_input_error_message('(2.0,xyz)', 'polygon');
+               pg_input_error_message               
+----------------------------------------------------
+ invalid input syntax for type polygon: "(2.0,xyz)"
+(1 row)
+

src/test/regress/sql/box.sql

@@ -281,3 +281,9 @@ WHERE seq.id IS NULL OR idx.id IS NULL;
 RESET enable_seqscan;
 RESET enable_indexscan;
 RESET enable_bitmapscan;
+
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('200', 'box');
+SELECT pg_input_error_message('200', 'box');
+SELECT pg_input_is_valid('((200,300),(500, xyz))', 'box');
+SELECT pg_input_error_message('((200,300),(500, xyz))', 'box');

src/test/regress/sql/geometry.sql

@@ -523,3 +523,9 @@ SELECT * FROM polygon_tbl WHERE f1 @> '((1,1),(2,2),(2,1))'::polygon
     ORDER BY (poly_center(f1))[0];
 SELECT * FROM polygon_tbl WHERE f1 @> '((1,1),(2,2),(2,1))'::polygon
     ORDER BY (poly_center(f1))[0];
+
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('(1', 'circle');
+SELECT pg_input_error_message('1,', 'circle');
+SELECT pg_input_is_valid('(1,2),-1', 'circle');
+SELECT pg_input_error_message('(1,2),-1', 'circle');

src/test/regress/sql/line.sql

@@ -40,3 +40,15 @@ select * from LINE_TBL;
 
 select '{nan, 1, nan}'::line = '{nan, 1, nan}'::line as true,
 	   '{nan, 1, nan}'::line = '{nan, 2, nan}'::line as false;
+
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('{1, 1}', 'line');
+SELECT pg_input_error_message('{1, 1}', 'line');
+SELECT pg_input_is_valid('{0, 0, 0}', 'line');
+SELECT pg_input_error_message('{0, 0, 0}', 'line');
+SELECT pg_input_is_valid('{1, 1, a}', 'line');
+SELECT pg_input_error_message('{1, 1, a}', 'line');
+SELECT pg_input_is_valid('{1, 1, 1e400}', 'line');
+SELECT pg_input_error_message('{1, 1, 1e400}', 'line');
+SELECT pg_input_is_valid('(1, 1), (1, 1e400)', 'line');
+SELECT pg_input_error_message('(1, 1), (1, 1e400)', 'line');

src/test/regress/sql/lseg.sql

@@ -22,3 +22,7 @@ INSERT INTO LSEG_TBL VALUES ('[(,2),(3,4)]');
 INSERT INTO LSEG_TBL VALUES ('[(1,2),(3,4)');
 
 select * from LSEG_TBL;
+
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('[(1,2),(3)]', 'lseg');
+SELECT pg_input_error_message('[(1,2),(3)]', 'lseg');

src/test/regress/sql/path.sql

@@ -42,3 +42,9 @@ SELECT f1 AS closed_path FROM PATH_TBL WHERE isclosed(f1);
 SELECT pclose(f1) AS closed_path FROM PATH_TBL;
 
 SELECT popen(f1) AS open_path FROM PATH_TBL;
+
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('[(1,2),(3)]', 'path');
+SELECT pg_input_error_message('[(1,2),(3)]', 'path');
+SELECT pg_input_is_valid('[(1,2,6),(3,4,6)]', 'path');
+SELECT pg_input_error_message('[(1,2,6),(3,4,6)]', 'path');

src/test/regress/sql/point.sql

@@ -96,3 +96,7 @@ SELECT COUNT(*) FROM point_gist_tbl WHERE f1 ~= '(0.0000018,0.0000018)'::point;
 RESET enable_seqscan;
 RESET enable_indexscan;
 RESET enable_bitmapscan;
+
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('1,y', 'point');
+SELECT pg_input_error_message('1,y', 'point');

src/test/regress/sql/polygon.sql

@@ -140,3 +140,9 @@ WHERE seq.id IS NULL OR idx.id IS NULL;
 RESET enable_seqscan;
 RESET enable_indexscan;
 RESET enable_bitmapscan;
+
+-- test non-error-throwing API for some core types
+SELECT pg_input_is_valid('(2.0,0.8,0.1)', 'polygon');
+SELECT pg_input_error_message('(2.0,0.8,0.1)', 'polygon');
+SELECT pg_input_is_valid('(2.0,xyz)', 'polygon');
+SELECT pg_input_error_message('(2.0,xyz)', 'polygon');