4. PostgreSQL Server (Address Sanitizer Enabled) Subprocess Went down at Function '__asan_memcpy'

Description: PostgreSQL Server (Address Sanitizer Enabled) Subprocess Went
down at Function '__asan_memcpy'

PostgreSQL Server Version: PostgreSQL 15.2 on x86_64-pc-linux-gnu, compiled
by Ubuntu clang version 12.0.1, 64-bit

Discoverer: Jingzhou Fu, Jie Liang and Zhiyong Wu in WingTecher Lab of
Tsinghua University and Shuimuyulin ltd

Email address: fjz22(at)mails(dot)tsinghua(dot)edu(dot)cn , wuzy21(at)mails(dot)tsinghua(dot)edu(dot)cn
, ljiee(at)mail(dot)tsinghua(dot)edu(dot)cn

PoC:

```sql

CREATE FUNCTION f1(cstring)

RETURNS interval_tbl

AS 'textin'

LANGUAGE internal STRICT IMMUTABLE;

CREATE FUNCTION interval_tbl_of(interval_tbl)

RETURNS cstring

AS 'textout'

LANGUAGE internal STRICT IMMUTABLE;

create type interval_tbl (

input = f1,

output = interval_tbl_of,

like = int8

);

SELECT interval_tbl_of('interval_tbl'::text::interval_tbl);

```

ASAN Report:

```

==2890==ERROR: AddressSanitizer: memcpy-param-overlap: memory ranges
[0x625000041218,0x625000041224) and [0x62500004121c, 0x625000041228) overlap

#0 0x519d74 in __asan_memcpy
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x519d74)

#1 0x1bd1956 in text_to_cstring
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1bd1956)

#2 0x1bd5515 in textout
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1bd5515)

#3 0xe84bc4 in ExecInterpExpr
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0xe84bc4)

#4 0xe81ced in ExecInterpExprStillValid
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0xe81ced)

#5 0x13589b4 in ExecEvalExprSwitchContext
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x13589b4)

#6 0x1358546 in evaluate_expr
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1358546)

#7 0x135d9c4 in evaluate_function
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x135d9c4)

#8 0x135b520 in simplify_function
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x135b520)

#9 0x134afda in eval_const_expressions_mutator
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x134afda)

#10 0x111caae in expression_tree_mutator
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x111caae)

#11 0x1355113 in eval_const_expressions_mutator
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1355113)

#12 0x111d807 in expression_tree_mutator
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x111d807)

#13 0x1355113 in eval_const_expressions_mutator
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1355113)

#14 0x1349342 in eval_const_expressions
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1349342)

#15 0x12a58ff in preprocess_expression
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x12a58ff)

#16 0x12a0185 in subquery_planner
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x12a0185)

#17 0x129ba26 in standard_planner
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x129ba26)

#18 0x129ae4b in planner
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x129ae4b)

#19 0x16e1e65 in pg_plan_query
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x16e1e65)

#20 0x16e2861 in pg_plan_queries
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x16e2861)

#21 0x16e924c in exec_simple_query
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x16e924c)

#22 0x16e7a62 in PostgresMain
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x16e7a62)

#23 0x144c17a in BackendRun
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x144c17a)

#24 0x144ad84 in BackendStartup
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x144ad84)

#25 0x14481e5 in ServerLoop
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x14481e5)

#26 0x1443e0e in PostmasterMain
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x1443e0e)

#27 0x106ebf1 in main
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x106ebf1)

#28 0x7fc0c3cfb082 in __libc_start_main
/build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16

#29 0x49fc0d in _start
(/root/bin_original_asan/usr/local/pgsql/bin/postgres+0x49fc0d)

```