diff --git a/gfx/d3d/d3d.cpp b/gfx/d3d/d3d.cpp
index ddd877a716..f2f65fa671 100644
--- a/gfx/d3d/d3d.cpp
+++ b/gfx/d3d/d3d.cpp
@@ -293,8 +293,8 @@ static bool d3d_initialize(d3d_video_t *d3d, const video_info_t *info)
       {
          /* Try to recreate the device completely. */
 #ifndef _XBOX
-         HRESULT res = d3d->dev->TestCooperativeLevel();
-         const char *err;
+         HRESULT res     = d3d->dev->TestCooperativeLevel();
+         const char *err = NULL;
          switch (res)
          {
             case D3DERR_DEVICELOST:
@@ -638,8 +638,8 @@ static bool d3d_construct(d3d_video_t *d3d,
 
 #ifndef _XBOX
 #ifdef HAVE_WINDOW
-   char buffer[128];
    unsigned win_width, win_height;
+   char buffer[128] = {0};
    RECT rect = {0};
 
    video_driver_get_size(&win_width, &win_height);
diff --git a/gfx/d3d/render_chain_cg.cpp b/gfx/d3d/render_chain_cg.cpp
index e9c2ae565d..cd9f992774 100644
--- a/gfx/d3d/render_chain_cg.cpp
+++ b/gfx/d3d/render_chain_cg.cpp
@@ -534,10 +534,13 @@ static void renderchain_bind_orig(void *data, void *pass_data)
 static void renderchain_bind_prev(void *data, void *pass_data)
 {
    unsigned i, index;
-   char attr_texture[64], attr_input_size[64], attr_tex_size[64], attr_coord[64];
    D3DXVECTOR2 texture_size;
-   Pass           *pass = (Pass*)pass_data;
-   cg_renderchain_t *chain = (cg_renderchain_t*)data;
+   char attr_texture[64]    = {0};
+   char attr_input_size[64] = {0};
+   char attr_tex_size[64]   = {0};
+   char attr_coord[64]      = {0};
+   Pass               *pass = (Pass*)pass_data;
+   cg_renderchain_t  *chain = (cg_renderchain_t*)data;
    static const char *prev_names[] = {
       "PREV",
       "PREV1",
@@ -665,10 +668,13 @@ static void renderchain_bind_pass(void *data, void *pass_data, unsigned pass_ind
 
    for (i = 1; i < pass_index - 1; i++)
    {
-      char pass_base[64], attr_texture[64], attr_input_size[64], attr_tex_size[64],
-           attr_coord[64];
       CGparameter param;
       D3DXVECTOR2 video_size, texture_size;
+      char pass_base[64]       = {0};
+      char attr_texture[64]    = {0};
+      char attr_input_size[64] = {0};
+      char attr_tex_size[64]   = {0};
+      char attr_coord[64]      = {0};
 
       snprintf(pass_base,       sizeof(pass_base),       "PASS%u",          i);
       snprintf(attr_texture,    sizeof(attr_texture),    "%s.texture",      pass_base);
diff --git a/gfx/drivers_context/androidegl_ctx.c b/gfx/drivers_context/androidegl_ctx.c
index 7fe39de105..430127d459 100644
--- a/gfx/drivers_context/androidegl_ctx.c
+++ b/gfx/drivers_context/androidegl_ctx.c
@@ -281,7 +281,8 @@ static void android_gfx_ctx_set_resize(void *data,
 
 static void android_gfx_ctx_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    video_monitor_get_fps(buf, sizeof(buf),
@@ -389,9 +390,9 @@ static int system_property_get_density(char *value)
 {
    FILE *pipe;
    int length = 0;
-   char buffer[PATH_MAX_LENGTH];
-   char cmd[PATH_MAX_LENGTH];
-   char *curpos = NULL;
+   char buffer[PATH_MAX_LENGTH] = {0};
+   char cmd[PATH_MAX_LENGTH]    = {0};
+   char *curpos                 = NULL;
 
    snprintf(cmd, sizeof(cmd), "wm density");
 
@@ -437,7 +438,7 @@ static bool android_gfx_ctx_get_metrics(void *data,
 	enum display_metric_types type, float *value)
 {
    int dpi;
-   char density[PROP_VALUE_MAX];
+   char density[PROP_VALUE_MAX] = {0};
    dpi_get_density(density, sizeof(density));
 
    switch (type)
diff --git a/gfx/drivers_context/bbqnx_ctx.c b/gfx/drivers_context/bbqnx_ctx.c
index e488d4fa85..573b502b08 100644
--- a/gfx/drivers_context/bbqnx_ctx.c
+++ b/gfx/drivers_context/bbqnx_ctx.c
@@ -353,7 +353,8 @@ static void gfx_ctx_qnx_set_resize(void *data, unsigned width, unsigned height)
 
 static void gfx_ctx_qnx_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    (void)data;
diff --git a/gfx/drivers_context/cgl_ctx.c b/gfx/drivers_context/cgl_ctx.c
index a1468de636..6d92800cdd 100644
--- a/gfx/drivers_context/cgl_ctx.c
+++ b/gfx/drivers_context/cgl_ctx.c
@@ -106,7 +106,8 @@ static void gfx_ctx_cgl_set_resize(void *data, unsigned width, unsigned height)
 
 static void gfx_ctx_cgl_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    (void)data;
diff --git a/gfx/drivers_context/cocoa_gl_ctx.m b/gfx/drivers_context/cocoa_gl_ctx.m
index 5862ef6012..de78de7702 100644
--- a/gfx/drivers_context/cocoa_gl_ctx.m
+++ b/gfx/drivers_context/cocoa_gl_ctx.m
@@ -357,7 +357,8 @@ static void cocoagl_gfx_ctx_get_video_size(void *data, unsigned* width, unsigned
 
 static void cocoagl_gfx_ctx_update_window_title(void *data)
 {
-   static char buf[128], buf_fps[128];
+   static char buf[128] = {0};
+   static char buf_fps[128] = {0};
    bool got_text = video_monitor_get_fps(buf, sizeof(buf),
          buf_fps, sizeof(buf_fps));
    settings_t *settings = config_get_ptr();
diff --git a/gfx/drivers_context/d3d_ctx.cpp b/gfx/drivers_context/d3d_ctx.cpp
index 83ef594cd1..6fc7faecbc 100644
--- a/gfx/drivers_context/d3d_ctx.cpp
+++ b/gfx/drivers_context/d3d_ctx.cpp
@@ -132,7 +132,8 @@ static void gfx_ctx_d3d_swap_buffers(void *data)
 
 static void gfx_ctx_d3d_update_title(void *data)
 {
-   char buf[128], buffer_fps[128];
+   char buf[128]        = {0};
+   char buffer_fps[128] = {0};
    d3d_video_t *d3d     = (d3d_video_t*)data;
    settings_t *settings = config_get_ptr();
 
@@ -147,8 +148,9 @@ static void gfx_ctx_d3d_update_title(void *data)
    if (settings->fps_show)
    {
 #ifdef _XBOX
-      char mem[128];
       MEMORYSTATUS stat;
+      char mem[128] = {0};
+
       GlobalMemoryStatus(&stat);
       snprintf(mem, sizeof(mem), "|| MEM: %.2f/%.2fMB",
             stat.dwAvailPhys/(1024.0f*1024.0f), stat.dwTotalPhys/(1024.0f*1024.0f));
diff --git a/gfx/drivers_context/drm_egl_ctx.c b/gfx/drivers_context/drm_egl_ctx.c
index 895f182d87..c7f3309ce6 100644
--- a/gfx/drivers_context/drm_egl_ctx.c
+++ b/gfx/drivers_context/drm_egl_ctx.c
@@ -307,7 +307,8 @@ static void gfx_ctx_drm_egl_set_resize(void *data,
 
 static void gfx_ctx_drm_egl_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    video_monitor_get_fps(buf, sizeof(buf),
@@ -427,12 +428,12 @@ static void gfx_ctx_drm_egl_destroy_resources(gfx_ctx_drm_egl_data_t *drm)
 
 static bool gfx_ctx_drm_egl_init(void *data)
 {
-   const char *gpu;
    int i;
    unsigned monitor_index;
-   unsigned gpu_index = 0;
+   unsigned gpu_index                   = 0;
+   const char *gpu                      = NULL;
    struct string_list *gpu_descriptors  = NULL;
-   settings_t *settings = config_get_ptr();
+   settings_t *settings                 = config_get_ptr();
    unsigned monitor = max(settings->video.monitor_index, 1);
 
    gfx_ctx_drm_egl_data_t *drm = (gfx_ctx_drm_egl_data_t*)calloc(1, sizeof(gfx_ctx_drm_egl_data_t));
diff --git a/gfx/drivers_context/emscriptenegl_ctx.c b/gfx/drivers_context/emscriptenegl_ctx.c
index 028f387b66..4dd574a2c9 100644
--- a/gfx/drivers_context/emscriptenegl_ctx.c
+++ b/gfx/drivers_context/emscriptenegl_ctx.c
@@ -86,7 +86,8 @@ static void gfx_ctx_emscripten_set_resize(void *data,
 
 static void gfx_ctx_emscripten_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    (void)data;
diff --git a/gfx/drivers_context/glx_ctx.c b/gfx/drivers_context/glx_ctx.c
index ed821e0b6e..5fdf0c4660 100644
--- a/gfx/drivers_context/glx_ctx.c
+++ b/gfx/drivers_context/glx_ctx.c
@@ -205,7 +205,8 @@ static void gfx_ctx_glx_set_resize(void *data,
 
 static void gfx_ctx_glx_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]           = {0};
+   char buf_fps[128]       = {0};
    driver_t *driver        = driver_get_ptr();
    settings_t *settings    = config_get_ptr();
    gfx_ctx_glx_data_t *glx = (gfx_ctx_glx_data_t*)driver->video_context_data;
diff --git a/gfx/drivers_context/mali_fbdev_ctx.c b/gfx/drivers_context/mali_fbdev_ctx.c
index 555fd88e42..d6b762c533 100644
--- a/gfx/drivers_context/mali_fbdev_ctx.c
+++ b/gfx/drivers_context/mali_fbdev_ctx.c
@@ -200,7 +200,8 @@ static void gfx_ctx_mali_fbdev_set_resize(void *data,
 
 static void gfx_ctx_mali_fbdev_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    (void)data;
@@ -275,7 +276,7 @@ static void gfx_ctx_mali_fbdev_input_driver(void *data,
 static gfx_ctx_proc_t gfx_ctx_mali_fbdev_get_proc_address(const char *symbol)
 {
    gfx_ctx_proc_t ret;
-   void *sym__;
+   void *sym__        = NULL;
 
    rarch_assert(sizeof(void*) == sizeof(void (*)(void)));
 
diff --git a/gfx/drivers_context/ps3_ctx.c b/gfx/drivers_context/ps3_ctx.c
index 210bda9a58..1689abb2a9 100644
--- a/gfx/drivers_context/ps3_ctx.c
+++ b/gfx/drivers_context/ps3_ctx.c
@@ -217,7 +217,8 @@ static void gfx_ctx_ps3_set_resize(void *data,
 
 static void gfx_ctx_ps3_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    (void)data;
diff --git a/gfx/drivers_context/sdl_gl_ctx.c b/gfx/drivers_context/sdl_gl_ctx.c
index 064c0ddcd1..7486e4ea58 100644
--- a/gfx/drivers_context/sdl_gl_ctx.c
+++ b/gfx/drivers_context/sdl_gl_ctx.c
@@ -281,7 +281,8 @@ static void sdl_ctx_get_video_size(void *data,
 
 static void sdl_ctx_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]           = {0};
+   char buf_fps[128]       = {0};
    driver_t *driver        = driver_get_ptr();
    settings_t *settings    = config_get_ptr();
    gfx_ctx_sdl_data_t *sdl = (gfx_ctx_sdl_data_t*)driver->video_context_data;
diff --git a/gfx/drivers_context/vc_egl_ctx.c b/gfx/drivers_context/vc_egl_ctx.c
index 238d72b9b1..ff719896d1 100644
--- a/gfx/drivers_context/vc_egl_ctx.c
+++ b/gfx/drivers_context/vc_egl_ctx.c
@@ -119,7 +119,8 @@ static void gfx_ctx_vc_set_resize(void *data, unsigned width, unsigned height)
 
 static void gfx_ctx_vc_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    (void)data;
diff --git a/gfx/drivers_context/vivante_fbdev_ctx.c b/gfx/drivers_context/vivante_fbdev_ctx.c
index 78de6ef2c6..10459313e8 100644
--- a/gfx/drivers_context/vivante_fbdev_ctx.c
+++ b/gfx/drivers_context/vivante_fbdev_ctx.c
@@ -187,7 +187,8 @@ static void gfx_ctx_vivante_set_resize(void *data,
 
 static void gfx_ctx_vivante_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    (void)data;
diff --git a/gfx/drivers_context/wayland_ctx.c b/gfx/drivers_context/wayland_ctx.c
index 33399630a5..6aebcfef7f 100644
--- a/gfx/drivers_context/wayland_ctx.c
+++ b/gfx/drivers_context/wayland_ctx.c
@@ -337,7 +337,8 @@ static void gfx_ctx_wl_set_resize(void *data, unsigned width, unsigned height)
 
 static void gfx_ctx_wl_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]              = {0};
+   char buf_fps[128]          = {0};
    driver_t *driver           = driver_get_ptr();
    settings_t *settings       = config_get_ptr();
    gfx_ctx_wayland_data_t *wl = (gfx_ctx_wayland_data_t*)
diff --git a/gfx/drivers_context/wgl_ctx.c b/gfx/drivers_context/wgl_ctx.c
index 46e2d25d8a..ba9e91bd8b 100644
--- a/gfx/drivers_context/wgl_ctx.c
+++ b/gfx/drivers_context/wgl_ctx.c
@@ -346,7 +346,8 @@ static void gfx_ctx_wgl_set_resize(void *data,
 
 static void gfx_ctx_wgl_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    (void)data;
diff --git a/gfx/drivers_context/xegl_ctx.c b/gfx/drivers_context/xegl_ctx.c
index 1fd1025097..df5179ac76 100644
--- a/gfx/drivers_context/xegl_ctx.c
+++ b/gfx/drivers_context/xegl_ctx.c
@@ -219,7 +219,8 @@ static void gfx_ctx_xegl_set_resize(void *data,
 
 static void gfx_ctx_xegl_update_window_title(void *data)
 {
-   char buf[128], buf_fps[128];
+   char buf[128]        = {0};
+   char buf_fps[128]    = {0};
    settings_t *settings = config_get_ptr();
 
    (void)data;
diff --git a/gfx/drivers_shader/shader_gl_cg.c b/gfx/drivers_shader/shader_gl_cg.c
index 9eec49a0e2..e081f27e9b 100644
--- a/gfx/drivers_shader/shader_gl_cg.c
+++ b/gfx/drivers_shader/shader_gl_cg.c
@@ -772,7 +772,7 @@ static void set_program_base_attrib(cg_shader_data_t *cg, unsigned i)
 static void set_pass_attrib(struct cg_program *program, struct cg_fbo_params *fbo,
       const char *attr)
 {
-   char attr_buf[64];
+   char attr_buf[64] = {0};
 
    snprintf(attr_buf, sizeof(attr_buf), "%s.texture", attr);
    if (!fbo->tex)
@@ -831,7 +831,7 @@ static void set_program_attributes(cg_shader_data_t *cg, unsigned i)
 
    if (i > 1)
    {
-      char pass_str[64];
+      char pass_str[64] = {0};
 
       snprintf(pass_str, sizeof(pass_str), "PASSPREV%u", i);
       set_pass_attrib(&cg->prg[i], &cg->prg[i].orig, pass_str);
@@ -839,8 +839,10 @@ static void set_program_attributes(cg_shader_data_t *cg, unsigned i)
 
    for (j = 0; j < PREV_TEXTURES; j++)
    {
-      char attr_buf_tex[64], attr_buf_vid_size[64];
-      char attr_buf_tex_size[64], attr_buf_coord[64];
+      char attr_buf_tex[64]      = {0};
+      char attr_buf_vid_size[64] = {0};
+      char attr_buf_tex_size[64] = {0};
+      char attr_buf_coord[64]    = {0};
       static const char *prev_names[PREV_TEXTURES] = {
          "PREV",
          "PREV1",
@@ -877,7 +879,8 @@ static void set_program_attributes(cg_shader_data_t *cg, unsigned i)
 
    for (j = 0; j + 1 < i; j++)
    {
-      char pass_str[64];
+      char pass_str[64] = {0};
+
       snprintf(pass_str, sizeof(pass_str), "PASS%u", j + 1);
       set_pass_attrib(&cg->prg[i], &cg->prg[i].fbo[j], pass_str);
       snprintf(pass_str, sizeof(pass_str), "PASSPREV%u", i - (j + 1));
diff --git a/gfx/drivers_shader/shader_glsl.c b/gfx/drivers_shader/shader_glsl.c
index 74e7f463cc..bf2eef085a 100644
--- a/gfx/drivers_shader/shader_glsl.c
+++ b/gfx/drivers_shader/shader_glsl.c
@@ -225,8 +225,8 @@ static GLint get_uniform(glsl_shader_data_t *glsl,
       GLuint prog, const char *base)
 {
    unsigned i;
-   char buf[64];
    GLint loc;
+   char buf[64] = {0};
 
    snprintf(buf, sizeof(buf), "%s%s", glsl->glsl_shader->prefix, base);
    loc = glGetUniformLocation(prog, buf);
@@ -248,8 +248,8 @@ static GLint get_attrib(glsl_shader_data_t *glsl,
       GLuint prog, const char *base)
 {
    unsigned i;
-   char buf[64];
    GLint loc;
+   char buf[64] = {0};
 
    snprintf(buf, sizeof(buf), "%s%s", glsl->glsl_shader->prefix, base);
    loc = glGetUniformLocation(prog, buf);
@@ -269,7 +269,7 @@ static GLint get_attrib(glsl_shader_data_t *glsl,
 
 static void print_shader_log(GLuint obj)
 {
-   char *info_log;
+   char *info_log = NULL;
    GLint max_len, info_len = 0;
 
    glGetShaderiv(obj, GL_INFO_LOG_LENGTH, &max_len);
@@ -291,7 +291,7 @@ static void print_shader_log(GLuint obj)
 
 static void print_linker_log(GLuint obj)
 {
-   char *info_log;
+   char *info_log = NULL;
    GLint max_len, info_len = 0;
 
    glGetProgramiv(obj, GL_INFO_LOG_LENGTH, &max_len);
@@ -554,8 +554,10 @@ static void find_uniforms_frame(glsl_shader_data_t *glsl,
       GLuint prog,
       struct shader_uniforms_frame *frame, const char *base)
 {
-   char texture[64], texture_size[64];
-   char input_size[64], tex_coord[64];
+   char texture[64]      = {0};
+   char texture_size[64] = {0};
+   char input_size[64]   = {0};
+   char tex_coord[64]    = {0};
 
    snprintf(texture, sizeof(texture), "%s%s", base, "Texture");
    snprintf(texture_size, sizeof(texture_size), "%s%s", base, "TextureSize");
@@ -576,8 +578,8 @@ static void find_uniforms(glsl_shader_data_t *glsl,
       unsigned pass, GLuint prog,
       struct shader_uniforms *uni)
 {
-   char frame_base[64];
    unsigned i;
+   char frame_base[64] = {0};
 
    glUseProgram(prog);
 
@@ -713,7 +715,7 @@ static bool gl_glsl_init(void *data, const char *path)
    glsl_shader_data_t *glsl   = NULL;
    const char *stock_vertex   = NULL;
    const char *stock_fragment = NULL;
-   driver_t *driver = driver_get_ptr();
+   driver_t *driver           = driver_get_ptr();
 
    (void)data;
 
@@ -837,7 +839,8 @@ static bool gl_glsl_init(void *data, const char *path)
    {
       if (*glsl->glsl_shader->pass[i].alias)
       {
-         char define[128];
+         char define[128] = {0};
+
          snprintf(define, sizeof(define), "#define %s_ALIAS\n",
                glsl->glsl_shader->pass[i].alias);
          strlcat(glsl->glsl_alias_define, define, sizeof(glsl->glsl_alias_define));
diff --git a/gfx/drivers_shader/shader_hlsl.c b/gfx/drivers_shader/shader_hlsl.c
index f71062c685..37a85a94e0 100644
--- a/gfx/drivers_shader/shader_hlsl.c
+++ b/gfx/drivers_shader/shader_hlsl.c
@@ -229,7 +229,8 @@ static void set_program_attributes(hlsl_shader_data_t *hlsl, unsigned i)
 static bool load_shader(hlsl_shader_data_t *hlsl,
 	void *data, const char *cgp_path, unsigned i)
 {
-   char path_buf[PATH_MAX_LENGTH];
+   char path_buf[PATH_MAX_LENGTH] = {0};
+
    fill_pathname_resolve_relative(path_buf, cgp_path,
       hlsl->cg_shader->pass[i].source.path, sizeof(path_buf));
 
diff --git a/gfx/drivers_wm/win32_shader_dlg.c b/gfx/drivers_wm/win32_shader_dlg.c
index e85ebb4d62..e6c9d8d18e 100644
--- a/gfx/drivers_wm/win32_shader_dlg.c
+++ b/gfx/drivers_wm/win32_shader_dlg.c
@@ -99,7 +99,7 @@ static shader_dlg_t g_shader_dlg = {0};
 
 static INLINE void shader_dlg_refresh_trackbar_label(int index)
 {
-   char val_buffer[32];
+   char val_buffer[32]         = {0};
    struct video_shader* shader = video_shader_driver_get_current_shader();
 
    if (floorf(shader->parameters[index].current) == shader->parameters[index].current)