In the shell WASM build, call open_db() early so that we can get access to the global db handle from certain experimentation-only function without having to first run some SQL code.

FossilOrigin-Name: 31706ef851f7d55e2fe865933ec03f42dfa8b49e6d1f12b6c016b5c1d3460504

src/shell.c.in

@@ -12563,6 +12563,38 @@ int SQLITE_CDECL wmain(int argc, wchar_t **wargv){
 
 
 #ifdef SQLITE_SHELL_WASM_MODE
+/* Only for emcc experimentation purposes. */
+int fiddle_experiment(int a,int b){
+   return a + b;
+}
+
+/* Only for emcc experimentation purposes.
+
+  Define this function in JS using:
+
+  emcc ... --js-library somefile.js
+
+  containing:
+
+mergeInto(LibraryManager.library, {
+    my_foo: function(){
+        console.debug("my_foo()",arguments);
+    }
+});
+*/
+/*extern void my_foo(sqlite3 *);*/
+/* Only for emcc experimentation purposes. */
+sqlite3 * fiddle_the_db(){
+    printf("fiddle_the_db(%p)\n", (const void*)globalDb);
+    /*my_foo(globalDb);*/
+    return globalDb;
+}
+/* Only for emcc experimentation purposes. */
+sqlite3 * fiddle_db_arg(sqlite3 *arg){
+    printf("fiddle_db_arg(%p)\n", (const void*)arg);
+    return arg;
+}
+
 /*
 ** Trivial exportable function for emscripten. Needs to be exported using:
 **
@@ -12589,7 +12621,13 @@ void fiddle_exec(const char * zSql){
     );
     puts("WASM shell");
     puts("Enter \".help\" for usage hints.");
-    puts("Connected to a transient in-memory database.");
+    if(once>0) open_db(&shellState, 0);
+    if(shellState.db){
+      puts("Connected to a transient in-memory database.");
+    }else{
+      fprintf(stderr,"ERROR initializing db!\n");
+      return;
+    }
   }
   if(once<0){
     puts("DB init failed. Not executing SQL.");