From e8bd74255abab4d84721170fb173804f3a7de212 Mon Sep 17 00:00:00 2001
From: Mike Dalessio <mike.dalessio@gmail.com>
Date: Fri, 2 Feb 2024 16:58:26 -0500
Subject: [PATCH 1/2] style: format C files

---
 ext/sqlite3/exception.c | 18 +++++++++---------
 ext/sqlite3/exception.h |  2 +-
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/ext/sqlite3/exception.c b/ext/sqlite3/exception.c
index 4631d304..4889fd28 100644
--- a/ext/sqlite3/exception.c
+++ b/ext/sqlite3/exception.c
@@ -102,16 +102,16 @@ rb_sqlite3_raise(sqlite3 *db, int status)
  *  accepts a sqlite3 error message as the final argument, which will be `sqlite3_free`d
  */
 void
-rb_sqlite3_raise_msg(sqlite3 *db, int status, const char* msg)
+rb_sqlite3_raise_msg(sqlite3 *db, int status, const char *msg)
 {
-  VALUE exception;
+    VALUE exception;
 
-  if (status == SQLITE_OK) {
-    return;
-  }
+    if (status == SQLITE_OK) {
+        return;
+    }
 
-  exception = rb_exc_new2(rb_path2class("SQLite3::Exception"), msg);
-  sqlite3_free((void*)msg);
-  rb_iv_set(exception, "@code", INT2FIX(status));
-  rb_exc_raise(exception);
+    exception = rb_exc_new2(rb_path2class("SQLite3::Exception"), msg);
+    sqlite3_free((void *)msg);
+    rb_iv_set(exception, "@code", INT2FIX(status));
+    rb_exc_raise(exception);
 }
diff --git a/ext/sqlite3/exception.h b/ext/sqlite3/exception.h
index 235694ab..6cb200cf 100644
--- a/ext/sqlite3/exception.h
+++ b/ext/sqlite3/exception.h
@@ -5,6 +5,6 @@
 #define CHECK_MSG(_db, _status, _msg) rb_sqlite3_raise_msg(_db, _status, _msg);
 
 void rb_sqlite3_raise(sqlite3 *db, int status);
-void rb_sqlite3_raise_msg(sqlite3 *db, int status, const char* msg);
+void rb_sqlite3_raise_msg(sqlite3 *db, int status, const char *msg);
 
 #endif

From 979e8b206a46068ae02de892cb65fb088952f5be Mon Sep 17 00:00:00 2001
From: Mike Dalessio <mike.dalessio@gmail.com>
Date: Fri, 2 Feb 2024 16:59:12 -0500
Subject: [PATCH 2/2] fix: memory leak in Statement#expanded_sql

from https://www.sqlite.org/c3ref/expanded_sql.html

> The strings returned by sqlite3_sql(P) and sqlite3_normalized_sql(P)
> are managed by SQLite and are automatically freed when the prepared
> statement is finalized. The string returned by
> sqlite3_expanded_sql(P), on the other hand, is obtained from
> sqlite3_malloc() and must be freed by the application by passing it
> to sqlite3_free().
---
 ext/sqlite3/statement.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/ext/sqlite3/statement.c b/ext/sqlite3/statement.c
index 26285ac8..29bb2779 100644
--- a/ext/sqlite3/statement.c
+++ b/ext/sqlite3/statement.c
@@ -622,10 +622,17 @@ static VALUE
 get_expanded_sql(VALUE self)
 {
     sqlite3StmtRubyPtr ctx;
+    char *expanded_sql;
+    VALUE rb_expanded_sql;
+
     TypedData_Get_Struct(self, sqlite3StmtRuby, &statement_type, ctx);
     REQUIRE_OPEN_STMT(ctx);
 
-    return rb_obj_freeze(SQLITE3_UTF8_STR_NEW2(sqlite3_expanded_sql(ctx->st)));
+    expanded_sql = sqlite3_expanded_sql(ctx->st);
+    rb_expanded_sql = rb_obj_freeze(SQLITE3_UTF8_STR_NEW2(expanded_sql));
+    sqlite3_free(expanded_sql);
+
+    return rb_expanded_sql;
 }
 
 void