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Mark variable used only in assertion with PG_USED_FOR_ASSERTS_ONLY

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Perpendicular lines always intersect, so the line_interpt_line() return
value in line_closept_point() was used only in an assertion, triggering
compiler warnings in non-assert builds.
This commit is contained in:
Tomas Vondra 2018-07-29 23:08:00 +02:00
parent 74294c7301
commit ab87b8fedc
1 changed files with 3 additions and 2 deletions
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5
src/backend/utils/adt/geo_ops.c
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@ -2528,14 +2528,15 @@ lseg_interpt_line(Point *result, LSEG *lseg, LINE *line)
static float8 static float8
line_closept_point(Point *result, LINE *line, Point *point) line_closept_point(Point *result, LINE *line, Point *point)
{ {
bool retval; bool retval PG_USED_FOR_ASSERTS_ONLY;
Point closept; Point closept;
LINE tmp; LINE tmp;
/* We drop a perpendicular to find the intersection point. */ /* We drop a perpendicular to find the intersection point. */
line_construct(&tmp, point, line_invsl(line)); line_construct(&tmp, point, line_invsl(line));
retval = line_interpt_line(&closept, line, &tmp); retval = line_interpt_line(&closept, line, &tmp);
Assert(retval); /* XXX: We need something better. */
Assert(retval); /* perpendicular lines always intersect */
if (result != NULL) if (result != NULL)
*result = closept; *result = closept;