From d3b8b454f853c63da4b94ec97afdcb1528ffdc22 Mon Sep 17 00:00:00 2001
From: Ilya Yatsishin <2159081+qoega@users.noreply.github.com>
Date: Tue, 27 Jun 2023 19:19:58 +0200
Subject: [PATCH 1/3] Fix segfault in MathUnary

---
 src/Functions/FunctionMathUnary.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Functions/FunctionMathUnary.h b/src/Functions/FunctionMathUnary.h
index 6e4bff7122d..9f400932356 100644
--- a/src/Functions/FunctionMathUnary.h
+++ b/src/Functions/FunctionMathUnary.h
@@ -154,6 +154,8 @@ private:
             using ColVecType = ColumnVectorOrDecimal<Type>;
 
             const auto col_vec = checkAndGetColumn<ColVecType>(col.column.get());
+            if (col_vec == nullptr)
+                return false;
             return (res = execute<Type, ReturnType>(col_vec)) != nullptr;
         };
 

From 575f3513977a21a8fea5ff30116636f2fc9ac2f1 Mon Sep 17 00:00:00 2001
From: Yatsishin Ilya <2159081+qoega@users.noreply.github.com>
Date: Tue, 27 Jun 2023 18:34:12 +0000
Subject: [PATCH 2/3] add test

---
 tests/queries/0_stateless/02807_math_unary_crash.reference | 2 ++
 tests/queries/0_stateless/02807_math_unary_crash.sql       | 4 ++++
 2 files changed, 6 insertions(+)
 create mode 100644 tests/queries/0_stateless/02807_math_unary_crash.reference
 create mode 100644 tests/queries/0_stateless/02807_math_unary_crash.sql

diff --git a/tests/queries/0_stateless/02807_math_unary_crash.reference b/tests/queries/0_stateless/02807_math_unary_crash.reference
new file mode 100644
index 00000000000..6ed281c757a
--- /dev/null
+++ b/tests/queries/0_stateless/02807_math_unary_crash.reference
@@ -0,0 +1,2 @@
+1
+1
diff --git a/tests/queries/0_stateless/02807_math_unary_crash.sql b/tests/queries/0_stateless/02807_math_unary_crash.sql
new file mode 100644
index 00000000000..16c3ba1e0ae
--- /dev/null
+++ b/tests/queries/0_stateless/02807_math_unary_crash.sql
@@ -0,0 +1,4 @@
+CREATE TABLE t10 (`c0` Int32) ENGINE = MergeTree ORDER BY tuple();
+INSERT INTO t10 (c0) FORMAT Values (-1);
+SELECT 1 FROM t10 GROUP BY erf(-sign(t10.c0));
+SELECT 1 FROM t10 GROUP BY -sign(t10.c0);

From 3e5abbbf48953288d5bcea4fab9f2431bd05873d Mon Sep 17 00:00:00 2001
From: Alexey Milovidov <milovidov@clickhouse.com>
Date: Tue, 27 Jun 2023 22:47:19 +0300
Subject: [PATCH 3/3] Update 02807_math_unary_crash.sql

---
 tests/queries/0_stateless/02807_math_unary_crash.sql | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/queries/0_stateless/02807_math_unary_crash.sql b/tests/queries/0_stateless/02807_math_unary_crash.sql
index 16c3ba1e0ae..fb693ac70f7 100644
--- a/tests/queries/0_stateless/02807_math_unary_crash.sql
+++ b/tests/queries/0_stateless/02807_math_unary_crash.sql
@@ -1,4 +1,6 @@
+DROP TABLE IF EXISTS t10;
 CREATE TABLE t10 (`c0` Int32) ENGINE = MergeTree ORDER BY tuple();
 INSERT INTO t10 (c0) FORMAT Values (-1);
 SELECT 1 FROM t10 GROUP BY erf(-sign(t10.c0));
 SELECT 1 FROM t10 GROUP BY -sign(t10.c0);
+DROP TABLE t10;