vlib: fix C warnings/errors for v -show-c-output -cstrict -cc clang-18 run examples/gg/additive.v

vlib/builtin/cfns_wrapper.c.v

@@ -1,7 +1,7 @@
 module builtin
 
 // vstrlen returns the V length of the C string `s` (0 terminator is not counted).
-// The C string is expected to be a &byte pointer.
+// The C string is expected to be a &u8 pointer.
 @[inline; unsafe]
 pub fn vstrlen(s &u8) int {
 	return unsafe { C.strlen(&char(s)) }

vlib/builtin/string.v

@@ -82,17 +82,17 @@ pub fn (s string) runes() []rune {
 // -autofree and `@[manualfree]`.
 // It will panic, if the pointer `s` is 0.
 @[unsafe]
-pub fn cstring_to_vstring(s &char) string {
-	return unsafe { tos2(&u8(s)) }.clone()
+pub fn cstring_to_vstring(const_s &char) string {
+	return unsafe { tos2(&u8(const_s)) }.clone()
 }
 
 // tos_clone creates a new V string copy of the C style string, pointed by `s`.
 // See also cstring_to_vstring (it is the same as it, the only difference is,
-// that tos_clone expects `&byte`, while cstring_to_vstring expects &char).
+// that tos_clone expects `&u8`, while cstring_to_vstring expects &char).
 // It will panic, if the pointer `s` is 0.
 @[unsafe]
-pub fn tos_clone(s &u8) string {
-	return unsafe { tos2(s) }.clone()
+pub fn tos_clone(const_s &u8) string {
+	return unsafe { tos2(&u8(const_s)) }.clone()
 }
 
 // tos creates a V string, given a C style pointer to a 0 terminated block.
@@ -114,7 +114,7 @@ pub fn tos(s &u8, len int) string {
 // Note: the memory block pointed by s is *reused, not copied*!
 // It will calculate the length first, thus it is more costly than `tos`.
 // It will panic, when the pointer `s` is 0.
-// It is the same as `tos3`, but for &byte pointers, avoiding callsite casts.
+// It is the same as `tos3`, but for &u8 pointers, avoiding callsite casts.
 // See also `tos_clone`.
 @[unsafe]
 pub fn tos2(s &u8) string {
@@ -148,7 +148,7 @@ pub fn tos3(s &char) string {
 // Note: the memory block pointed by s is *reused, not copied*!
 // It will calculate the length first, so it is more costly than tos.
 // It returns '', when given a 0 pointer `s`, it does NOT panic.
-// It is the same as `tos5`, but for &byte pointers, avoiding callsite casts.
+// It is the same as `tos5`, but for &u8 pointers, avoiding callsite casts.
 // See also `tos_clone`.
 @[unsafe]
 pub fn tos4(s &u8) string {

vlib/gg/gg.c.v

@@ -752,7 +752,7 @@ pub fn window_size() Size {
 
 // set_window_title sets main window's title
 pub fn set_window_title(title string) {
-	C.sapp_set_window_title(title.str)
+	C.sapp_set_window_title(&char(title.str))
 }
 
 // window_size_real_pixels returns the `Size` of the active window without scale

vlib/gg/image.c.v

@@ -92,7 +92,7 @@ pub fn (mut img Image) init_sokol_image() &Image {
 		num_mipmaps: 0
 		// wrap_u: .clamp_to_edge // XTODO SAMPLER
 		// wrap_v: .clamp_to_edge
-		label: img.path.str
+		label: &char(img.path.str)
 		d3d11_texture: 0
 	}
 
@@ -156,7 +156,7 @@ pub fn (mut ctx Context) new_streaming_image(w int, h int, channels int, sicfg S
 		num_slices: 1
 		num_mipmaps: 1
 		usage: .stream
-		label: img.path.str
+		label: &char(img.path.str)
 	}
 	// Sokol requires that streamed images have NO .ptr/.size initially:
 	img_desc.data.subimage[0][0] = gfx.Range{

vlib/sokol/sapp/sapp.c.v

@@ -211,7 +211,7 @@ pub fn frame_duration() f64 {
 // write string into clipboard
 @[inline]
 pub fn set_clipboard_string(str &u8) {
-	C.sapp_set_clipboard_string(str)
+	C.sapp_set_clipboard_string(&char(str))
 }
 
 // read string from clipboard (usually during SAPP_EVENTTYPE_CLIPBOARD_PASTED)
@@ -252,17 +252,17 @@ pub fn metal_get_device() voidptr {
 
 // Metal: get ARC-bridged pointer to current drawable
 pub fn metal_get_current_drawable() voidptr {
-	return C.sapp_metal_get_current_drawable()
+	return voidptr(C.sapp_metal_get_current_drawable())
 }
 
 // Metal: get bridged pointer to MTKView's depth-stencil texture of type MTLTexture
 pub fn metal_get_depth_stencil_texture() voidptr {
-	return C.sapp_metal_get_depth_stencil_texture()
+	return voidptr(C.sapp_metal_get_depth_stencil_texture())
 }
 
 // Metal: get bridged pointer to MTKView's msaa-color-texture of type MTLTexture (may be null)
 pub fn metal_get_msaa_color_texture() voidptr {
-	return C.sapp_metal_get_msaa_color_texture()
+	return voidptr(C.sapp_metal_get_msaa_color_texture())
 }
 
 // macOS: get ARC-bridged pointer to macOS NSWindow
@@ -298,7 +298,7 @@ pub fn d3d11_get_render_view() voidptr {
 // D3D11: get pointer ID3D11RenderTargetView object for msaa-resolve (may return null)
 @[inline]
 pub fn d3d11_get_resolve_view() voidptr {
-	return C.sapp_d3d11_get_resolve_view()
+	return voidptr(C.sapp_d3d11_get_resolve_view())
 }
 
 // D3D11: get pointer to ID3D11DepthStencilView
@@ -315,22 +315,22 @@ pub fn win32_get_hwnd() voidptr {
 
 // WebGPU: get WGPUDevice handle
 pub fn wgpu_get_device() voidptr {
-	return C.sapp_wgpu_get_device()
+	return voidptr(C.sapp_wgpu_get_device())
 }
 
 // WebGPU: get swapchain's WGPUTextureView handle for rendering
 pub fn wgpu_get_render_view() voidptr {
-	return C.sapp_wgpu_get_render_view()
+	return voidptr(C.sapp_wgpu_get_render_view())
 }
 
 // WebGPU: get swapchain's MSAA-resolve WGPUTextureView (may return null)
 pub fn wgpu_get_resolve_view() voidptr {
-	return C.sapp_wgpu_get_resolve_view()
+	return voidptr(C.sapp_wgpu_get_resolve_view())
 }
 
 // WebGPU: get swapchain's WGPUTextureView for the depth-stencil surface
 pub fn wgpu_get_depth_stencil_view() voidptr {
-	return C.sapp_wgpu_get_depth_stencil_view()
+	return voidptr(C.sapp_wgpu_get_depth_stencil_view())
 }
 
 // GL: get framebuffer object

vlib/sokol/sapp/sapp_funcs.c.v

@@ -78,10 +78,10 @@ fn C.sapp_frame_count() u64
 fn C.sapp_frame_duration() f64
 
 // write string into clipboard
-fn C.sapp_set_clipboard_string(str &u8)
+fn C.sapp_set_clipboard_string(const_str &char)
 
 // read string from clipboard (usually during SAPP_EVENTTYPE_CLIPBOARD_PASTED)
-fn C.sapp_get_clipboard_string() &u8
+fn C.sapp_get_clipboard_string() &char
 
 // set the window title (only on desktop platforms)
 fn C.sapp_set_window_title(&char)
@@ -93,7 +93,7 @@ fn C.sapp_set_window_title(&char)
 fn C.sapp_get_num_dropped_files() int
 
 // Get the file path of the dropped file
-fn C.sapp_get_dropped_file_path(int) &u8
+fn C.sapp_get_dropped_file_path(int) &char
 
 // special run-function for SOKOL_NO_ENTRY (in standard mode this is an empty stub)
 fn C.sapp_run(desc &Desc) int