(gfx/drivers) Cleanups

gfx/drivers/dispmanx_gfx.c

@@ -400,7 +400,7 @@ static bool dispmanx_gfx_frame(void *data, const void *frame, unsigned width,
 
    if (_dispvars->menu_active)
    {
-      char buf[128];
+      char buf[128] = {0};
       video_monitor_get_fps(buf, sizeof(buf), NULL, 0);
    }
 

gfx/drivers/exynos_gfx.c

@@ -181,9 +181,9 @@ static INLINE unsigned align_common(unsigned i, unsigned j)
 /* Find the index of a compatible DRM device. */
 static int exynos_get_device_index(void)
 {
-   char buf[32];
    int fd;
    drmVersionPtr ver;
+   char buf[32]       = {0};
    int index          = 0;
    bool found         = false;
 
@@ -584,9 +584,9 @@ static void exynos_g2d_free(struct exynos_data *pdata)
 
 static int exynos_open(struct exynos_data *pdata)
 {
-   char buf[32];
    unsigned i;
    int fd                                 = -1;
+   char buf[32]                           = {0};
    struct exynos_drm *drm                 = NULL;
    struct exynos_fliphandler *fliphandler = NULL;
    settings_t *settings                   = config_get_ptr();
@@ -1439,7 +1439,8 @@ static bool exynos_gfx_frame(void *data, const void *frame, unsigned width,
 
    if (settings->fps_show)
    {
-      char buffer[128], buffer_fps[128];
+      char buffer[128]     = {0};
+      char buffer_fps[128] = {0};
       video_monitor_get_fps(buffer, sizeof(buffer),
             settings->fps_show ? buffer_fps : NULL, sizeof(buffer_fps));
       rarch_main_msg_queue_push(buffer_fps, 1, 1, false);

gfx/drivers/gl.c

@@ -2142,7 +2142,8 @@ static void DEBUG_CALLBACK_TYPE gl_debug_cb(GLenum source, GLenum type,
       GLuint id, GLenum severity, GLsizei length,
       const GLchar *message, void *userParam)
 {
-   const char *src, *typestr;
+   const char      *src = NULL;
+   const char **typestr = NULL;
    gl_t             *gl = (gl_t*)userParam; /* Useful for debugger. */
 
    (void)gl;

gfx/drivers/gx_gfx.c

@@ -1029,7 +1029,8 @@ static bool gx_frame(void *data, const void *frame,
       unsigned width, unsigned height, unsigned pitch,
       const char *msg)
 {
-   char fps_txt[128], fps_text_buf[128];
+   char fps_txt[128]         = {0};
+   char fps_text_buf[128]   = {0};
    gx_video_t *gx           = (gx_video_t*)data;
    struct __gx_regdef *__gx = (struct __gx_regdef*)__gxregs;
    u8 clear_efb             = GX_FALSE;
@@ -1124,10 +1125,13 @@ static bool gx_frame(void *data, const void *frame,
 
    if (settings->fps_show)
    {
-      char mem1_txt[128];
+      char mem1_txt[128] = {0};
+      char mem2_txt[128] = {0};
       unsigned x         = 15;
       unsigned y         = 35;
 
+      (void)mem2_txt;
+
       gx_blit_line(x, y, fps_text_buf);
       y += FONT_HEIGHT * (gx->double_strike ? 1 : 2);
       snprintf(mem1_txt, sizeof(mem1_txt), "MEM1: %8d / %8d",
@@ -1135,7 +1139,6 @@ static bool gx_frame(void *data, const void *frame,
       gx_blit_line(x, y, mem1_txt);
 #ifdef HW_RVL
       y += FONT_HEIGHT * (gx->double_strike ? 1 : 2);
-      char mem2_txt[128];
       snprintf(mem2_txt, sizeof(mem2_txt), "MEM2: %8d / %8d",
             gx_mem2_used(), gx_mem2_total());
       gx_blit_line(x, y, mem2_txt);

gfx/drivers/omap_gfx.c

@@ -85,7 +85,7 @@ typedef struct omapfb_data
 
 static const char *omapfb_get_fb_device(void)
 {
-   static char fbname[12];
+   static char fbname[12] = {0};
    settings_t   *settings = config_get_ptr();
    const int        fbidx = settings->video.monitor_index;
 
@@ -173,7 +173,9 @@ static int omapfb_detect_screen(omapfb_data_t *pdata)
    int w, h;
    FILE *f;
    int fb_id, overlay_id = -1, display_id = -1;
-   char buff[64], manager_name[64], display_name[64];
+   char buff[64]         = {0};
+   char manager_name[64] = {0};
+   char display_name[64] = {0};
 
    /* Find out the native screen resolution, which is needed to 
     * properly center the scaled image data. */

gfx/drivers/psp1_gfx.c

@@ -466,7 +466,8 @@ error:
 static bool psp_frame(void *data, const void *frame,
       unsigned width, unsigned height, unsigned pitch, const char *msg)
 {
-   static char fps_txt[128], fps_text_buf[128];
+   static char fps_txt[128]      = {0};
+   static char fps_text_buf[128] = {0};
    psp1_video_t *psp             = (psp1_video_t*)data;
    settings_t *settings          = config_get_ptr();
 #ifdef DISPLAY_FPS

gfx/drivers/sdl2_gfx.c

@@ -92,7 +92,7 @@ static void sdl2_init_font(sdl2_video_t *vid, const char *font_path,
 {
    int i, r, g, b;
    SDL_Color colors[256];
-   SDL_Surface *tmp;
+   SDL_Surface *tmp = NULL;
    SDL_Palette *pal = NULL;
    const struct font_atlas *atlas = NULL;
    settings_t *settings = config_get_ptr();
@@ -479,7 +479,7 @@ static void check_window(sdl2_video_t *vid)
 static bool sdl2_gfx_frame(void *data, const void *frame, unsigned width,
                            unsigned height, unsigned pitch, const char *msg)
 {
-   char buf[128];
+   char buf[128]     = {0};
    sdl2_video_t *vid = (sdl2_video_t*)data;
    driver_t *driver  = driver_get_ptr();
 

gfx/drivers/sdl_gfx.c

@@ -348,7 +348,7 @@ static void sdl_gfx_check_window(sdl_video_t *vid)
 static bool sdl_gfx_frame(void *data, const void *frame, unsigned width,
       unsigned height, unsigned pitch, const char *msg)
 {
-   char buf[128];
+   char buf[128]    = {0};
    sdl_video_t *vid = (sdl_video_t*)data;
 
    if (!frame)

gfx/drivers/sunxi_gfx.c

@@ -795,7 +795,8 @@ static bool sunxi_gfx_frame(void *data, const void *frame, unsigned width,
 
    if (_dispvars->menu_active)
    {
-      char buf[128];
+      char buf[128] = {0};
+
       video_monitor_get_fps(buf, sizeof(buf), NULL, 0);
       ioctl(_dispvars->sunxi_disp->fd_fb, FBIO_WAITFORVSYNC, 0);
       return true;

gfx/drivers/xvideo.c

@@ -408,7 +408,8 @@ static void *xv_init(const video_info_t *video,
       const input_driver_t **input, void **input_data)
 {
    unsigned i;
-   char buf[128], buf_fps[128];
+   char buf[128]                          = {0};
+   char buf_fps[128]                      = {0};
    struct sigaction sa                    = {{0}};
    XSetWindowAttributes attributes        = {0};
    XVisualInfo visualtemplate             = {0};
@@ -764,8 +765,8 @@ static void xv_render_msg(xv_t *xv, const char *msg,
 static bool xv_frame(void *data, const void *frame, unsigned width,
       unsigned height, unsigned pitch, const char *msg)
 {
-   char buf[128];
    XWindowAttributes target;
+   char buf[128]             = {0};
    xv_t *xv                  = (xv_t*)data;
 
    if (!frame)