From af7b8b6768e7436d11b49d3b02a061640b6c2dba Mon Sep 17 00:00:00 2001
From: Pekka Enberg <penberg@iki.fi>
Date: Wed, 17 Jul 2024 12:53:55 +0300
Subject: [PATCH] sqlite3: Implement some auxiliary functions

This adds `sqlite3_libversion()`, `sqlite3_libversion_number()`, and
`libsql3_threadsafe()`.
---
 sqlite3/src/lib.rs       |  8 +++++---
 sqlite3/tests/Makefile   |  1 +
 sqlite3/tests/main.c     |  4 ++++
 sqlite3/tests/test-aux.c | 11 +++++++++++
 4 files changed, 21 insertions(+), 3 deletions(-)
 create mode 100644 sqlite3/tests/test-aux.c

diff --git a/sqlite3/src/lib.rs b/sqlite3/src/lib.rs
index f724e6ab8..aad33b792 100644
--- a/sqlite3/src/lib.rs
+++ b/sqlite3/src/lib.rs
@@ -773,15 +773,17 @@ pub unsafe extern "C" fn sqlite3_complete(_sql: *const std::ffi::c_char) -> ffi:
 
 #[no_mangle]
 pub unsafe extern "C" fn sqlite3_threadsafe() -> ffi::c_int {
-    todo!();
+    1
 }
 
 #[no_mangle]
 pub unsafe extern "C" fn sqlite3_libversion() -> *const std::ffi::c_char {
-    todo!();
+    ffi::CStr::from_bytes_with_nul(b"3.42.0\0")
+        .unwrap()
+        .as_ptr()
 }
 
 #[no_mangle]
 pub unsafe extern "C" fn sqlite3_libversion_number() -> ffi::c_int {
-    todo!();
+    3042000
 }
diff --git a/sqlite3/tests/Makefile b/sqlite3/tests/Makefile
index 84beb2307..1450fb499 100644
--- a/sqlite3/tests/Makefile
+++ b/sqlite3/tests/Makefile
@@ -15,6 +15,7 @@ CFLAGS = -g -Wall -std=c17 -MMD -MP
 LIBS ?= -lsqlite3
 
 OBJS += main.o
+OBJS += test-aux.o
 OBJS += test-close.o
 OBJS += test-open.o
 OBJS += test-prepare.o
diff --git a/sqlite3/tests/main.c b/sqlite3/tests/main.c
index 58590ea84..0166aa860 100644
--- a/sqlite3/tests/main.c
+++ b/sqlite3/tests/main.c
@@ -1,3 +1,5 @@
+extern void test_libversion();
+extern void test_libversion_number();
 extern void test_open_misuse();
 extern void test_open_not_found();
 extern void test_open_existing();
@@ -6,6 +8,8 @@ extern void test_prepare_misuse();
 
 int main(int argc, char *argv[])
 {
+	test_libversion();
+	test_libversion_number();
 	test_open_misuse();
 	test_open_not_found();
 	test_open_existing();
diff --git a/sqlite3/tests/test-aux.c b/sqlite3/tests/test-aux.c
new file mode 100644
index 000000000..77c1c3b7a
--- /dev/null
+++ b/sqlite3/tests/test-aux.c
@@ -0,0 +1,11 @@
+#include "check.h"
+
+#include <sqlite3.h>
+
+void test_libversion(void) {
+    sqlite3_libversion();
+}
+
+void test_libversion_number(void) {
+  sqlite3_libversion_number();
+}