[postgis-tickets] [PostGIS] #5350: ST_AsSVG crashes on geometry collection with an empty point

[PostGIS]

#5350: ST_AsSVG crashes on geometry collection with an empty point
----------------------+---------------------------
  Reporter:  robe     |      Owner:  robe
      Type:  defect   |     Status:  new
  Priority:  blocker  |  Milestone:  PostGIS 3.0.9
 Component:  postgis  |    Version:  3.3.x
Resolution:           |   Keywords:
----------------------+---------------------------
Comment (by robe):

 stack trace looks like

 {{{
 0x0000000063f6c095 in assvg_point (sb=sb at entry=0x51eea10,
     circle=circle at entry=1, precision=precision at entry=5, point=<optimized
 out>)
     at lwout_svg.c:133
 133             lwprint_double(pt->x, precision, sx);
 (gdb) bt
 #0  0x0000000063f6c095 in assvg_point (sb=sb at entry=0x51eea10,
     circle=circle at entry=1, precision=precision at entry=5, point=<optimized
 out>)
     at lwout_svg.c:133
 #1  0x0000000063f6cc82 in assvg_geom (precision=5, relative=1,
     geom=<optimized out>, sb=0x51eea10) at lwout_svg.c:252
 #2  assvg_collection (col=0x8557668, col=0x8557668, precision=5,
 relative=1,
     sb=0x51eea10) at lwout_svg.c:237
 #3  lwgeom_to_svg (geom=0x8557668, precision=5, relative=1) at
 lwout_svg.c:325
 #4  0x000000000061026f in ExecInterpExpr (state=0x8559888,
     econtext=0x8559ad8, isnull=<optimized out>) at execExprInterp.c:752
 #5  0x0000000000710fe1 in ExecEvalExprSwitchContext (isNull=0x51eeb7c,
     econtext=<optimized out>, state=0x8559888)
     at ../../../../src/include/executor/executor.h:344
 #6  evaluate_expr (expr=<optimized out>, result_type=result_type at entry=25,
     result_typmod=result_typmod at entry=-1,
     result_collation=result_collation at entry=100) at clauses.c:4845
 #7  0x0000000000712a58 in evaluate_function (context=0x51ef020,
     func_tuple=0x8620190, funcvariadic=false, args=0x855fcc0,
 input_collid=0,
     result_collid=100, result_typmod=-1, result_type=25, funcid=20542)
     at clauses.c:4347
 #8  simplify_function (funcid=20542, result_type=25, result_typmod=-1,
     result_collid=result_collid at entry=100,
 input_collid=input_collid at entry=0,
     args_p=args_p at entry=0x51eed60, funcvariadic=funcvariadic at entry=false,
     process_args=process_args at entry=true,
     allow_non_const=allow_non_const at entry=true,
     context=context at entry=0x51ef020) at clauses.c:3930
 #9  0x000000000071113b in eval_const_expressions_mutator (node=0x7b8f280,
     context=0x51ef020) at clauses.c:2466
 #10 0x000000000068be24 in expression_tree_mutator_impl (
     node=node at entry=0x7b8f2d0,
     mutator=mutator at entry=0x711080 <eval_const_expressions_mutator>,
     context=context at entry=0x51ef020) at nodeFuncs.c:3269
 #11 0x00000000007111a6 in eval_const_expressions_mutator (node=0x7b8f2d0,
     context=0x51ef020) at clauses.c:3549
 #12 0x000000000068c054 in expression_tree_mutator_impl (
     node=node at entry=0x7b8f320,
     mutator=mutator at entry=0x711080 <eval_const_expressions_mutator>,
     context=context at entry=0x51ef020) at nodeFuncs.c:3136
 #13 0x00000000007111a6 in eval_const_expressions_mutator (node=0x7b8f320,
     context=context at entry=0x51ef020) at clauses.c:3549
 #14 0x00000000007128c4 in eval_const_expressions
 (root=root at entry=0x855f5c8,
     node=<optimized out>) at clauses.c:2146
 #15 0x00000000006f3f8e in preprocess_expression
 (root=root at entry=0x855f5c8,
     expr=<optimized out>, kind=kind at entry=1) at planner.c:1145
 #16 0x00000000006fcc37 in subquery_planner (glob=glob at entry=0x7b8e780,
     parse=<optimized out>, parse at entry=0x7b8e890,
     parent_root=parent_root at entry=0x0,
 hasRecursion=hasRecursion at entry=false,
     tuple_fraction=tuple_fraction at entry=0) at planner.c:811
 #17 0x00000000006fd48f in standard_planner (parse=0x7b8e890,
     query_string=<optimized out>, cursorOptions=2048,
     boundParams=<optimized out>) at planner.c:411
 #18 0x00000000007e33fa in pg_plan_query (querytree=0x7b8e890,
     query_string=0x7b8d798 " SELECT
 ST_AsSVG(ST_GeomFromText('GEOMETRYCOLLECTION (POINT EMPTY, LINESTRING (0
 0, 1 1))',4326), 3, 5 )", cursorOptions=2048,
     boundParams=0x0) at postgres.c:870
 #19 0x00000000007e3501 in pg_plan_queries (querytrees=0x7b8f3f0,
     query_string=query_string at entry=0x7b8d798 " SELECT
 ST_AsSVG(ST_GeomFromText('GEOMETRYCOLLECTION (POINT EMPTY, LINESTRING (0
 0, 1 1))',4326), 3, 5 )",
     cursorOptions=cursorOptions at entry=2048,
 boundParams=boundParams at entry=0x0)
     at postgres.c:962
 #20 0x00000000007e3895 in exec_simple_query (
     query_string=0x7b8d798 " SELECT
 ST_AsSVG(ST_GeomFromText('GEOMETRYCOLLECTION (POINT EMPTY, LINESTRING (0
 0, 1 1))',4326), 3, 5 )") at postgres.c:1159
 #21 0x00000000007e6c6e in PostgresMain (dbname=0x5f76eb0 "postgres",
     username=0x5f78d68 "postgres") at postgres.c:4572
 #22 0x00000000007489e2 in BackendRun (port=0x51ef7c0, port=0x51ef7c0)
     at postmaster.c:4461
 #23 SubPostmasterMain (argc=argc at entry=3, argv=argv at entry=0x5f76ca0)
     at postmaster.c:4965
 #24 0x00000000009a2ea9 in main (argc=3, argv=0x5f76ca0) at main.c:192
 }}}
-- 
Ticket URL: <https://trac.osgeo.org/postgis/ticket/5350#comment:2>
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