Prevent some implicit memsets

gfx/common/win32_common.cpp

@@ -261,7 +261,9 @@ void win32_monitor_info(void *data, void *hm_data, unsigned *mon_id)
 /* Get the count of the files dropped */
 static int win32_drag_query_file(HWND hwnd, WPARAM wparam)
 {
-   char szFilename[1024] = {0};
+   char szFilename[1024];
+
+   szFilename[0] = '\0';
 
    if (DragQueryFile((HDROP)wparam, 0xFFFFFFFF, NULL, 0))
    {

gfx/drivers/exynos_gfx.c

@@ -1306,8 +1306,11 @@ static bool exynos_gfx_frame(void *data, const void *frame, unsigned width,
 
    if (settings->fps_show)
    {
-      char buffer[128]     = {0};
-      char buffer_fps[128] = {0};
+      char buffer[128];
+      char buffer_fps[128];
+
+      buffer[0] = buffer_fps[0] = '\0';
+
       video_monitor_get_fps(buffer, sizeof(buffer),
             settings->fps_show ? buffer_fps : NULL, sizeof(buffer_fps));
       runloop_msg_queue_push(buffer_fps, 1, 1, false);

gfx/drivers/gx_gfx.c

@@ -1438,13 +1438,15 @@ static bool gx_frame(void *data, const void *frame,
       uint64_t frame_count, unsigned pitch,
       const char *msg)
 {
+   char fps_txt[128];
+   char fps_text_buf[128];
    static struct retro_perf_counter gx_frame = {0};
-   char fps_txt[128]                  = {0};
-   char fps_text_buf[128]             = {0};
    gx_video_t *gx                     = (gx_video_t*)data;
    u8                       clear_efb = GX_FALSE;
    settings_t               *settings = config_get_ptr();
 
+   fps_txt[0] = fps_text_buf[0]       = '\0';
+
    performance_counter_init(&gx_frame, "gx_frame");
    performance_counter_start(&gx_frame);
 
@@ -1540,11 +1542,13 @@ static bool gx_frame(void *data, const void *frame,
 
    if (settings->fps_show)
    {
-      char mem1_txt[128] = {0};
-      char mem2_txt[128] = {0};
+      char mem1_txt[128];
+      char mem2_txt[128];
       unsigned x         = 15;
       unsigned y         = 35;
 
+      mem1_txt[0] = mem2_txt[0] = '\0';
+
       (void)mem2_txt;
 
       gx_blit_line(gx, x, y, fps_text_buf);

gfx/drivers/omap_gfx.c

@@ -178,10 +178,12 @@ static int omapfb_detect_screen(omapfb_data_t *pdata)
    int i, ret;
    int w, h;
    FILE *f;
-   int fb_id, overlay_id = -1, display_id = -1;
-   char buff[64]         = {0};
-   char manager_name[64] = {0};
-   char display_name[64] = {0};
+   char buff[64];
+   char manager_name[64];
+   char display_name[64];
+   int fb_id, overlay_id = -1, display_id      = -1;
+
+   buff[0] = manager_name[0] = display_name[0] = '\0';
 
    /* Find out the native screen resolution, which is needed to 
     * properly center the scaled image data. */

gfx/drivers/sdl_gfx.c

@@ -332,13 +332,15 @@ static bool sdl_gfx_frame(void *data, const void *frame, unsigned width,
       unsigned height, uint64_t frame_count,
       unsigned pitch, const char *msg)
 {
-   char                       buf[128] = {0};
+   char                       buf[128];
    static struct retro_perf_counter sdl_scale = {0};
    sdl_video_t                    *vid = (sdl_video_t*)data;
 
    if (!frame)
       return true;
 
+   buf[0] = '\0';
+
    if (SDL_MUSTLOCK(vid->screen))
       SDL_LockSurface(vid->screen);
 

gfx/drivers/vita2d_gfx.c

@@ -205,8 +205,11 @@ static bool vita2d_gfx_frame(void *data, const void *frame,
    
    if (settings->fps_show)
    {
-      char buffer[128]     = {0};
-      char buffer_fps[128] = {0};
+      char buffer[128];
+      char buffer_fps[128];
+
+      buffer[0] = buffer_fps[0] = '\0';
+
       video_monitor_get_fps(buffer, sizeof(buffer),
             settings->fps_show ? buffer_fps : NULL, sizeof(buffer_fps));
       runloop_msg_queue_push(buffer_fps, 1, 1, false);

gfx/drivers_context/cgl_ctx.c

@@ -114,10 +114,11 @@ static bool gfx_ctx_cgl_set_resize(void *data, unsigned width, unsigned height)
 
 static void gfx_ctx_cgl_update_window_title(void *data)
 {
-   char buf[128]        = {0};
-   char buf_fps[128]    = {0};
+   char buf[128];
+   char buf_fps[128];
    settings_t *settings = config_get_ptr();
 
+   buf[0] = buf_fps[0]  = '\0';
    (void)data;
 
    video_monitor_get_fps(buf, sizeof(buf),

gfx/drivers_context/d3d_ctx.cpp

@@ -87,11 +87,13 @@ static void gfx_ctx_d3d_swap_buffers(void *data)
 
 static void gfx_ctx_d3d_update_title(void *data)
 {
-   char buf[128]             = {0};
-   char buffer_fps[128]      = {0};
+   char buf[128];
+   char buffer_fps[128];
    settings_t *settings      = config_get_ptr();
    const ui_window_t *window = ui_companion_driver_get_window_ptr();
 
+   buf[0] = buffer_fps[0]    = '\0';
+
    if (window && video_monitor_get_fps(buf, sizeof(buf),
             buffer_fps, sizeof(buffer_fps)))
    {
@@ -104,7 +106,9 @@ static void gfx_ctx_d3d_update_title(void *data)
    {
 #ifdef _XBOX
       MEMORYSTATUS stat;
-      char mem[128] = {0};
+      char mem[128];
+
+      mem[0] = '\0';
 
       GlobalMemoryStatus(&stat);
       snprintf(mem, sizeof(mem), "|| MEM: %.2f/%.2fMB",

gfx/drivers_context/khr_display_ctx.c

@@ -113,10 +113,12 @@ static bool gfx_ctx_khr_display_set_resize(void *data,
 
 static void gfx_ctx_khr_display_update_window_title(void *data)
 {
-   char buf[128]        = {0};
-   char buf_fps[128]    = {0};
+   char buf[128];
+   char buf_fps[128];
    settings_t *settings = config_get_ptr();
 
+   buf[0] = buf_fps[0]  = '\0';
+
    (void)data;
 
    video_monitor_get_fps(buf, sizeof(buf),

gfx/drivers_context/opendingux_fbdev_ctx.c

@@ -144,10 +144,12 @@ static bool gfx_ctx_opendingux_set_resize(void *data,
 
 static void gfx_ctx_opendingux_update_window_title(void *data)
 {
-   char buf[128]        = {0};
-   char buf_fps[128]    = {0};
+   char buf[128];
+   char buf_fps[128];
    settings_t *settings = config_get_ptr();
 
+   buf[0] = buf_fps[0]  = '\0';
+
    video_monitor_get_fps(buf, sizeof(buf),
          buf_fps, sizeof(buf_fps));
    if (settings->fps_show)

gfx/drivers_context/ps3_ctx.c

@@ -200,10 +200,12 @@ static bool gfx_ctx_ps3_set_resize(void *data,
 
 static void gfx_ctx_ps3_update_window_title(void *data)
 {
-   char buf[128]        = {0};
-   char buf_fps[128]    = {0};
+   char buf[128];
+   char buf_fps[128];
    settings_t *settings = config_get_ptr();
 
+   buf[0] = buf_fps[0]  = '\0';
+
    (void)data;
 
    video_monitor_get_fps(buf, sizeof(buf),

gfx/drivers_shader/shader_hlsl.c

@@ -260,7 +260,9 @@ static bool hlsl_load_shader(hlsl_shader_data_t *hlsl,
 	void *data, const char *cgp_path, unsigned i)
 {
    struct shader_program_info program_info;
-   char path_buf[PATH_MAX_LENGTH] = {0};
+   char path_buf[PATH_MAX_LENGTH];
+
+   path_buf[0]           = '\0';
 
    program_info.combined = path_buf;
    program_info.is_file  = true;

input/input_keyboard.c

@@ -83,9 +83,10 @@ static void osk_update_last_codepoint(const char *word)
 
 static void osk_update_last_char(const char c)
 {
-   char array[2] = {0};
+   char array[2];
 
    array[0] = c;
+   array[1] = 0;
 
    osk_update_last_codepoint(array);
 }

input/input_remapping.c

@@ -101,11 +101,13 @@ bool input_remapping_save_file(const char *path)
 {
    bool ret;
    unsigned i, j;
-   char buf[PATH_MAX_LENGTH]         = {0};
-   char remap_file[PATH_MAX_LENGTH]  = {0};
+   char buf[PATH_MAX_LENGTH];
+   char remap_file[PATH_MAX_LENGTH];
    config_file_t               *conf = NULL;
    settings_t              *settings = config_get_ptr();
 
+   buf[0] = remap_file[0]            = '\0';
+
    fill_pathname_join(buf, settings->directory.input_remapping,
          path, sizeof(buf));
 
@@ -122,7 +124,7 @@ bool input_remapping_save_file(const char *path)
 
    for (i = 0; i < settings->input.max_users; i++)
    {
-      char buf[64] = {0};
+      char buf[64];
       char key_ident[RARCH_FIRST_CUSTOM_BIND + 4][128]   = {{0}};
       char key_strings[RARCH_FIRST_CUSTOM_BIND + 4][128] = {
          "b", "y", "select", "start",
@@ -130,6 +132,8 @@ bool input_remapping_save_file(const char *path)
          "a", "x", "l", "r", "l2", "r2",
          "l3", "r3", "l_x", "l_y", "r_x", "r_y" };
 
+      buf[0] = '\0';
+
       snprintf(buf, sizeof(buf), "input_player%u", i + 1);
 
       for (j = 0; j < RARCH_FIRST_CUSTOM_BIND + 4; j++)

libretro-common/file/retro_dirent.c

@@ -33,7 +33,7 @@
 struct RDIR *retro_opendir(const char *name)
 {
 #if defined(_WIN32)
-   char path_buf[1024] = {0};
+   char path_buf[1024];
 #endif
    struct RDIR *rdir = (struct RDIR*)calloc(1, sizeof(*rdir));
 
@@ -41,6 +41,7 @@ struct RDIR *retro_opendir(const char *name)
       return NULL;
 
 #if defined(_WIN32)
+   path_buf[0] = '\0';
    snprintf(path_buf, sizeof(path_buf), "%s\\*", name);
    rdir->directory = FindFirstFile(path_buf, &rdir->entry);
 #elif defined(VITA) || defined(PSP)

libretro-common/net/net_http_parse.c

@@ -86,9 +86,11 @@ int string_parse_html_anchor(const char *line, char *link, char *name,
 #ifndef RARCH_INTERNAL
 int main(int argc, char *argv[])
 {
+   char link[1024];
+   char name[1024];
    const char *line = "<a href=\"http://www.test.com/somefile.zip\">Test</a>\n";
-   char link[1024] = {0};
-   char name[1024] = {0};
+
+   link[0] = name[0] = '\0';
 
    string_parse_html_anchor(line, link, name, sizeof(link), sizeof(name));