Remove unused "m" field in LSEG.

This field has been unreferenced since 1998, and does not appear in lseg
values stored on disk (since sizeof(lseg) is only 32 bytes according to
pg_type).  There was apparently some idea of maintaining it just in values
appearing in memory, but the bookkeeping required to make that work would
surely far outweigh the cost of recalculating the line's slope when needed.
Remove it to (a) simplify matters and (b) suppress some uninitialized-field
whining from Coverity.

3 files changed, 0 insertions, 22 deletions

diff --git a/src/backend/utils/adt/geo_ops.c b/src/backend/utils/adt/geo_ops.c
index 0b13c400547..6b6510e8e2a 100644
--- a/src/backend/utils/adt/geo_ops.c
+++ b/src/backend/utils/adt/geo_ops.c
@@ -2019,10 +2019,6 @@ lseg_in(PG_FUNCTION_ARGS)
 				(errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
 				 errmsg("invalid input syntax for type lseg: \"%s\"", str)));
 
-#ifdef NOT_USED
-	lseg->m = point_sl(&lseg->p[0], &lseg->p[1]);
-#endif
-
 	PG_RETURN_LSEG_P(lseg);
 }
 
@@ -2051,10 +2047,6 @@ lseg_recv(PG_FUNCTION_ARGS)
 	lseg->p[1].x = pq_getmsgfloat8(buf);
 	lseg->p[1].y = pq_getmsgfloat8(buf);
 
-#ifdef NOT_USED
-	lseg->m = point_sl(&lseg->p[0], &lseg->p[1]);
-#endif
-
 	PG_RETURN_LSEG_P(lseg);
 }
 
@@ -2091,10 +2083,6 @@ lseg_construct(PG_FUNCTION_ARGS)
 	result->p[1].x = pt2->x;
 	result->p[1].y = pt2->y;
 
-#ifdef NOT_USED
-	result->m = point_sl(pt1, pt2);
-#endif
-
 	PG_RETURN_LSEG_P(result);
 }
 
@@ -2106,10 +2094,6 @@ statlseg_construct(LSEG *lseg, Point *pt1, Point *pt2)
 	lseg->p[0].y = pt1->y;
 	lseg->p[1].x = pt2->x;
 	lseg->p[1].y = pt2->y;
-
-#ifdef NOT_USED
-	lseg->m = point_sl(pt1, pt2);
-#endif
 }
 
 Datum
@@ -2160,9 +2144,6 @@ lseg_parallel(PG_FUNCTION_ARGS)
 	LSEG	   *l1 = PG_GETARG_LSEG_P(0);
 	LSEG	   *l2 = PG_GETARG_LSEG_P(1);
 
-#ifdef NOT_USED
-	PG_RETURN_BOOL(FPeq(l1->m, l2->m));
-#endif
 	PG_RETURN_BOOL(FPeq(point_sl(&l1->p[0], &l1->p[1]),
 						point_sl(&l2->p[0], &l2->p[1])));
 }
diff --git a/src/include/utils/geo_decls.h b/src/include/utils/geo_decls.h
index 37bddc803f6..0b6d3c32d1d 100644
--- a/src/include/utils/geo_decls.h
+++ b/src/include/utils/geo_decls.h
@@ -68,8 +68,6 @@ typedef struct
 typedef struct
 {
 	Point		p[2];
-
-	double		m;				/* precomputed to save time, not in tuple */
 } LSEG;
 
 
diff --git a/src/test/regress/regress.c b/src/test/regress/regress.c
index 621a10dfcfa..2e37d980af8 100644
--- a/src/test/regress/regress.c
+++ b/src/test/regress/regress.c
@@ -212,7 +212,6 @@ regress_lseg_construct(LSEG *lseg, Point *pt1, Point *pt2)
 	lseg->p[0].y = pt1->y;
 	lseg->p[1].x = pt2->x;
 	lseg->p[1].y = pt2->y;
-	lseg->m = point_sl(pt1, pt2);
 }
 
 PG_FUNCTION_INFO_V1(overpaid);