PG_VERSION_USED=17 ./start_oss_server.sh -d /tmp/pgsql/data -p 5432

for i in $(seq 10); do ~/pgreplay/pgreplay postmaster.log; coredumpctl && break; done

2026-02-15 17:03:02.970 MSK|postgres|postgres|6991d216.102409|LOG:  statement: SET search_path TO documentdb_core,documentdb_api,documentdb_api_catalog,documentdb_api_internal;
2026-02-15 17:03:02.982 MSK|postgres|postgres|6991d216.102409|LOG:  statement: SELECT * FROM bson_dollar_project('{}', '{"result": {"$let": {"vars": {"variable": "with space"}, "in": "_variable"}}}'); 

Program terminated with signal SIGSEGV, Segmentation fault.
#0  ParseDollarLet (argument=<optimized out>, data=0x5f95322aa920, context=0x7ffebf372418) at src/operators/bson_expression.c:2858
2858            inputVariableContext->preserveVariableTable = true;
(gdb) bt
#0  ParseDollarLet (argument=<optimized out>, data=0x5f95322aa920, context=0x7ffebf372418) at src/operators/bson_expression.c:2858
#1  0x000077180c14b873 in ParseDocumentAggregationExpressionData (parseContext=0x7ffebf372418, expressionData=0x5f95322aa920, value=<optimized out>)
    at src/operators/bson_expression.c:2511
#2  ParseAggregationExpressionData (expressionData=0x5f95322aa920, value=<optimized out>, context=0x7ffebf372418) at src/operators/bson_expression.c:1750
#3  0x000077180c0c50d0 in ValidateAndSetLeafNodeData (childNode=childNode@entry=0x5f95322aa8f8, value=value@entry=0x7ffebf3723b0,
    relativePath=relativePath@entry=0x7ffebf372170, treatAsConstantExpression=<optimized out>, parseContext=parseContext@entry=0x7ffebf372418)
    at src/aggregation/bson_tree.c:572
#4  0x000077180c0bfeeb in BuildBsonPathTreeCore (pathSpecification=pathSpecification@entry=0x7ffebf372380, tree=tree@entry=0x5f95322aaea0,
    context=context@entry=0x7ffebf372410, forceLeafExpression=forceLeafExpression@entry=false) at src/aggregation/bson_projection_tree.c:222
#5  0x000077180c0c0288 in BuildBsonPathTree (pathSpecification=0x7ffebf372380, context=context@entry=0x7ffebf372410, forceLeafExpression=forceLeafExpression@entry=false,
    hasFields=hasFields@entry=0x7ffebf3722c7) at src/aggregation/bson_projection_tree.c:84
#6  0x000077180c0bc009 in BuildBsonPathTreeForDollarProjectCore (state=state@entry=0x5f95322aae58, projectionContext=projectionContext@entry=0x7ffebf372310,
    pathTreeContext=pathTreeContext@entry=0x7ffebf372410) at src/aggregation/bson_project.c:1773
#7  0x000077180c0be21b in BuildBsonPathTreeForDollarProject (projectionContext=0x7ffebf372310, state=0x5f95322aae58) at src/aggregation/bson_project.c:1720
#8  bson_dollar_project (fcinfo=0x5f95322aa860) at src/aggregation/bson_project.c:242
#9  0x00005f9530aea457 in ExecInterpExpr (state=0x5f95322aa790, econtext=0x5f95322aa980, isnull=<optimized out>) at execExprInterp.c:764
#10 0x00005f9530bdb0de in ExecEvalExprSwitchContext (isNull=0x7ffebf3725e4, econtext=<optimized out>, state=0x5f95322aa790)
    at ../../../../src/include/executor/executor.h:357
#11 evaluate_expr (expr=<optimized out>, result_type=result_type@entry=16386, result_typmod=result_typmod@entry=-1, result_collation=result_collation@entry=0)
    at clauses.c:5009
#12 0x00005f9530bdb321 in evaluate_function (func_tuple=0x77180f7dfbf8, context=0x7ffebf372840, funcvariadic=false, args=0x5f95321f8470, input_collid=0, result_collid=0,
    result_typmod=-1, result_type=16386, funcid=17983) at clauses.c:4515
#13 simplify_function (funcid=17983, result_type=16386, result_typmod=-1, result_collid=result_collid@entry=0, input_collid=input_collid@entry=0,
    args_p=args_p@entry=0x7ffebf372780, funcvariadic=false, process_args=true, allow_non_const=true, context=0x7ffebf372840) at clauses.c:4104
#14 0x00005f9530bdc00d in eval_const_expressions_mutator (node=<optimized out>, context=0x7ffebf372840) at clauses.c:2591
#15 0x00005f9530b55b6b in expression_tree_mutator_impl (node=0x5f95321f74f0, mutator=0x5f9530bdbb30 <eval_const_expressions_mutator>, context=0x7ffebf372840)
    at nodeFuncs.c:3688
#16 0x00005f9530b55d62 in expression_tree_mutator_impl (node=0x5f95321f7538, mutator=0x5f9530bdbb30 <eval_const_expressions_mutator>, context=0x7ffebf372840)
--Type <RET> for more, q to quit, c to continue without paging--
    at nodeFuncs.c:3545
#17 0x00005f9530bdd19a in eval_const_expressions (root=root@entry=0x5f95321b8a60, node=<optimized out>) at clauses.c:2266
#18 0x00005f9530bd34e8 in preprocess_function_rtes (root=root@entry=0x5f95321b8a60) at prepjointree.c:900
#19 0x00005f9530bc8d5a in subquery_planner (glob=glob@entry=0x5f95321f7b18, parse=parse@entry=0x5f95321b8260, parent_root=parent_root@entry=0x0,
    hasRecursion=hasRecursion@entry=false, tuple_fraction=tuple_fraction@entry=0, setops=setops@entry=0x0) at planner.c:723
#20 0x00005f9530bc9a32 in standard_planner (parse=0x5f95321b8260, query_string=<optimized out>, cursorOptions=2048, boundParams=0x0) at planner.c:416
#21 0x000077180c166725 in DocumentDBApiPlanner (parse=0x5f95321b8260,
    queryString=0x5f95321b7178 "SELECT * FROM bson_dollar_project('{}', '{\"result\": {\"$let\": {\"vars\": {\"variable\": \"with space\"}, \"in\": \"_variable\"}}}'); ",
    cursorOptions=2048, boundParams=0x0) at src/planner/documents_planner.c:264
#22 0x00005f9530c923ce in pg_plan_query (querytree=querytree@entry=0x5f95321b8260,
    query_string=query_string@entry=0x5f95321b7178 "SELECT * FROM bson_dollar_project('{}', '{\"result\": {\"$let\": {\"vars\": {\"variable\": \"with space\"}, \"in\": \"_variable\"}}}'); ", cursorOptions=cursorOptions@entry=2048, boundParams=boundParams@entry=0x0) at postgres.c:908
#23 0x00005f9530c924c3 in pg_plan_queries (querytrees=0x5f95321f79e8,
    query_string=query_string@entry=0x5f95321b7178 "SELECT * FROM bson_dollar_project('{}', '{\"result\": {\"$let\": {\"vars\": {\"variable\": \"with space\"}, \"in\": \"_variable\"}}}'); ", cursorOptions=cursorOptions@entry=2048, boundParams=boundParams@entry=0x0) at postgres.c:1000
#24 0x00005f9530c92782 in exec_simple_query (
    query_string=0x5f95321b7178 "SELECT * FROM bson_dollar_project('{}', '{\"result\": {\"$let\": {\"vars\": {\"variable\": \"with space\"}, \"in\": \"_variable\"}}}'); ")
    at postgres.c:1197
#25 0x00005f9530c93c0b in PostgresMain (dbname=<optimized out>, username=<optimized out>) at postgres.c:4767
#26 0x00005f9530c8ee55 in BackendMain (startup_data=<optimized out>, startup_data_len=<optimized out>) at backend_startup.c:105
#27 0x00005f9530bff5cf in postmaster_child_launch (child_type=child_type@entry=B_BACKEND, startup_data=startup_data@entry=0x7ffebf372f10 "",
    startup_data_len=startup_data_len@entry=4, client_sock=client_sock@entry=0x7ffebf372f30) at launch_backend.c:277
#28 0x00005f9530c03099 in BackendStartup (client_sock=0x7ffebf372f30) at postmaster.c:3594
#29 ServerLoop () at postmaster.c:1676
#30 0x00005f9530c04e31 in PostmasterMain (argc=argc@entry=5, argv=argv@entry=0x5f9532171120) at postmaster.c:1374
#31 0x00005f9530942ab2 in main (argc=5, argv=0x5f9532171120) at main.c:199