testprogram: let main() return normally, don't exit for platform (eg Android) where there is some cleanup afterward.

test/checkkeys.c

@@ -35,8 +35,11 @@ static void
 quit(int rc)
 {
     SDL_Quit();
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void
 print_string(char **text, size_t *maxlen, const char *fmt, ...)

test/checkkeysthreads.c

@@ -33,8 +33,11 @@ static void
 quit(int rc)
 {
     SDL_Quit();
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void
 print_string(char **text, size_t *maxlen, const char *fmt, ...)

test/loopwave.c

@@ -41,8 +41,11 @@ static void
 quit(int rc)
 {
     SDL_Quit();
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void
 close_audio(void)

test/loopwavequeue.c

@@ -40,8 +40,11 @@ static void
 quit(int rc)
 {
     SDL_Quit();
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static int done = 0;
 static void poked(int sig)

test/testaudiohotplug.c

@@ -42,8 +42,11 @@ quit(int rc)
 {
     SDL_Quit();
     SDLTest_CommonDestroyState(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void SDLCALL
 fillerup(void *_pos, Uint8 *stream, int len)

test/testautomation.c

@@ -52,8 +52,11 @@ static void
 quit(int rc)
 {
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 int main(int argc, char *argv[])
 {

test/testcustomcursor.c

@@ -144,8 +144,11 @@ static void
 quit(int rc)
 {
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void loop(void)
 {

test/testdropfile.c

@@ -22,8 +22,11 @@ static void
 quit(int rc)
 {
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 int main(int argc, char *argv[])
 {

test/testerror.c

@@ -25,8 +25,11 @@ static void
 quit(int rc)
 {
     SDL_Quit();
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static int SDLCALL
 ThreadFunc(void *data)

test/testgeometry.c

@@ -38,8 +38,11 @@ quit(int rc)
 {
     SDL_free(sprites);
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static int LoadSprite(const char *file)
 {

test/testgl.c

@@ -65,8 +65,11 @@ static void quit(int rc)
         SDL_GL_DeleteContext(context);
     }
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void Render(void)
 {

test/testgles.c

@@ -43,8 +43,11 @@ quit(int rc)
     }
 
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void
 Render()

test/testgles2.c

@@ -100,8 +100,11 @@ quit(int rc)
     }
 
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 #define GL_CHECK(x)                                                                         \
     x;                                                                                      \

test/testgles2_sdf.c

@@ -102,8 +102,11 @@ quit(int rc)
     }
 
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 #define GL_CHECK(x)                                                                         \
     x;                                                                                      \

test/testlock.c

@@ -65,8 +65,11 @@ static void closemutex(int sig)
         threads = NULL;
     }
     SDL_DestroyMutex(mutex);
+    /* Let 'main()' return normally */
+    if (sig != 0) {
         exit(sig);
     }
+}
 
 static int SDLCALL
 Run(void *data)
@@ -100,7 +103,7 @@ Run(void *data)
 }
 
 #ifndef _WIN32
-Uint32 hit_timeout(Uint32 interval, void *param) {
+static Uint32 hit_timeout(Uint32 interval, void *param) {
     SDL_Log("Hit timeout! Sending SIGINT!");
     kill(0, SIGINT);
     return 0;

test/testmessage.c

@@ -23,8 +23,11 @@ static void
 quit(int rc)
 {
     SDL_Quit();
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static int SDLCALL
 button_messagebox(void *eventNumber)

test/testnative.c

@@ -52,8 +52,11 @@ quit(int rc)
         factory->DestroyNativeWindow(native_window);
     }
     SDLTest_CommonDestroyState(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void MoveSprites(SDL_Renderer *renderer, SDL_Texture *sprite)
 {

test/testoverlay.c

@@ -176,7 +176,7 @@ quit(int rc)
 
     SDLTest_CommonQuit(state);
 
-
+    /* Let 'main()' return normally */
     if (rc != 0) {
          exit(rc);
     }

test/testpopup.c

@@ -47,8 +47,8 @@ struct PopupWindow
     int idx;
 };
 
-struct PopupWindow *menus;
-struct PopupWindow tooltip;
+static struct PopupWindow *menus;
+static struct PopupWindow tooltip;
 
 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
 static void quit(int rc)
@@ -57,8 +57,11 @@ static void quit(int rc)
     menus = NULL;
 
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static int get_menu_index_by_window(SDL_Window *window)
 {
@@ -115,7 +118,7 @@ static SDL_bool create_popup(struct PopupWindow *new_popup, SDL_bool is_menu)
     return SDL_FALSE;
 }
 
-static void close_popups()
+static void close_popups(void)
 {
     int i;
 
@@ -135,7 +138,7 @@ static void close_popups()
     }
 }
 
-static void loop()
+static void loop(void)
 {
     int i;
     char fmt_str[128];

test/testrendercopyex.c

@@ -41,8 +41,11 @@ static void
 quit(int rc)
 {
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void Draw(DrawState *s)
 {

test/testrendertarget.c

@@ -42,8 +42,11 @@ static void
 quit(int rc)
 {
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static SDL_bool
 DrawComposite(DrawState *s)

test/testscale.c

@@ -41,8 +41,11 @@ static void
 quit(int rc)
 {
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void Draw(DrawState *s)
 {

test/testsem.c

@@ -256,7 +256,7 @@ int main(int argc, char **argv)
 {
     int arg_count = 0;
     int i;
-    int init_sem;
+    int init_sem = 0;
     SDLTest_CommonState *state;
 
     /* Initialize test framework */

test/testsprite.c

@@ -57,9 +57,7 @@ quit(int rc)
     SDL_free(positions);
     SDL_free(velocities);
     SDLTest_CommonQuit(state);
-    /* If rc is 0, just let main return normally rather than calling exit.
-     * This allows testing of platforms where SDL_main is required and does meaningful cleanup.
-     */
+    /* Let 'main()' return normally */
     if (rc != 0) {
         exit(rc);
     }

test/testspriteminimal.c

@@ -40,8 +40,11 @@ static void
 quit(int rc)
 {
     SDL_Quit();
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void MoveSprites(void)
 {

test/teststreaming.c

@@ -64,14 +64,17 @@ static SDL_Renderer *renderer;
 static int frame;
 static SDL_Texture *MooseTexture;
 static SDL_bool done = SDL_FALSE;
-SDLTest_CommonState *state;
+static SDLTest_CommonState *state;
 
 static void quit(int rc)
 {
     SDL_Quit();
     SDLTest_CommonDestroyState(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void UpdateTexture(SDL_Texture *texture)
 {

test/testthread.c

@@ -22,7 +22,7 @@
 static SDL_TLSID tls;
 static int alive = 0;
 static int testprio = 0;
-SDLTest_CommonState *state;
+static SDLTest_CommonState *state;
 
 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
 static void
@@ -30,8 +30,11 @@ quit(int rc)
 {
     SDLTest_CommonDestroyState(state);
     SDL_Quit();
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static const char *
 getprioritystr(SDL_ThreadPriority priority)

test/testviewport.c

@@ -38,8 +38,11 @@ static void
 quit(int rc)
 {
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void DrawOnViewport(SDL_Renderer *renderer)
 {

test/testvulkan.c

@@ -187,8 +187,11 @@ static void quit(int rc)
 {
     shutdownVulkan(SDL_TRUE);
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static void loadGlobalFunctions(void)
 {

test/testwm.c

@@ -47,8 +47,11 @@ static void
 quit(int rc)
 {
     SDLTest_CommonQuit(state);
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 /* Draws the modes menu, and stores the mode index under the mouse in highlighted_mode */
 static void

test/torturethread.c

@@ -28,8 +28,11 @@ static void
 quit(int rc)
 {
     SDL_Quit();
+    /* Let 'main()' return normally */
+    if (rc != 0) {
         exit(rc);
     }
+}
 
 static int SDLCALL
 SubThreadFunc(void *data)