Fix 32 bit linux unknown function handling

Building and running the regression tests reveals that the 32 bit unknown function
handling on linux is broken. It required the same fixes as did windows 32 bit, since
the code is almost identical.

wsi.c also would not compile in 32 bit linux due to the warnings-as-errors being enabled,
which has also been fixed.

2 files changed, 62 insertions, 44 deletions

diff --git a/loader/unknown_ext_chain_gas_x86.S b/loader/unknown_ext_chain_gas_x86.S
index 349bdc98c..b1c4b3d7f 100644
--- a/loader/unknown_ext_chain_gas_x86.S
+++ b/loader/unknown_ext_chain_gas_x86.S
@@ -99,14 +99,14 @@ vkPhysDevExtTermin\num:
     mov     [esp + 4], ecx                                                      # Copy the unwrapped VkPhysicalDevice into the first arg
     jmp     [eax + (DISPATCH_OFFSET_ICD_TERM + (PTR_SIZE * \num))]              # Jump to the next function in the chain
 terminError\num:
-    mov     eax, [eax + INSTANCE_OFFSET_ICD_TERM]                       # Load the loader_instance into eax
-    push    [eax + (FUNCTION_OFFSET_INSTANCE + (CHAR_PTR_SIZE * \num))] # Push the func name (fifth arg)
-    push    offset termin_error_string@GOT                              # Push the error string (fourth arg)
-    push    0                                                           # Push zero (third arg)
-    push    VULKAN_LOADER_ERROR_BIT                                     # Push the error logging bit (second arg)
-    push    eax                                                         # Push the loader_instance (first arg)
-    call    loader_log                                                  # Log the error message before we crash
-    add     esp, 20                                                     # Clean up the args
+    mov     eax, dword ptr [eax + INSTANCE_OFFSET_ICD_TERM]                       # Load the loader_instance into eax
+    push    dword ptr [eax + (FUNCTION_OFFSET_INSTANCE + (CHAR_PTR_SIZE * \num))] # Push the func name (fifth arg)
+    push    offset termin_error_string                                            # Push the error string (fourth arg)
+    push    0                                                                     # Push zero (third arg)
+    push    VULKAN_LOADER_ERROR_BIT                                               # Push the error logging bit (second arg)
+    push    eax                                                                   # Push the loader_instance (first arg)
+    call    loader_log                                                            # Log the error message before we crash
+    add     esp, 20                                                               # Clean up the args
     mov     eax, 0
     jmp     eax                                                         # Crash intentionally by jumping to address zero
 .endm
@@ -115,8 +115,9 @@ terminError\num:
 .global vkdev_ext\num
 vkdev_ext\num:
     _CET_ENDBR
-    mov     eax, [esp + 4]                                                      # Dereference the handle to get the dispatch table
-    jmp     [eax + (EXT_OFFSET_DEVICE_DISPATCH + (PTR_SIZE * \num))]            # Jump to the appropriate call chain
+    mov     eax, dword ptr [esp + 4]                                            # Dereference the handle to get the dispatch table
+    mov     eax, dword ptr [eax]                                                # Dereference the chain_device to get the loader_dispatch
+    jmp     dword ptr [eax + (EXT_OFFSET_DEVICE_DISPATCH + (PTR_SIZE * \num))]  # Jump to the appropriate call chain
 .endm
 
 .endif
diff --git a/loader/wsi.c b/loader/wsi.c
index 8e9539868..ed4901830 100644
--- a/loader/wsi.c
+++ b/loader/wsi.c
@@ -193,15 +193,16 @@ VKAPI_ATTR void VKAPI_CALL terminator_DestroySurfaceKHR(VkInstance instance, VkS
             uint32_t i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
                 if (icd_term->scanned_icd->interface_version >= ICD_VER_SUPPORTS_ICD_SURFACE_KHR) {
-                    if (NULL != icd_term->dispatch.DestroySurfaceKHR && (VkSurfaceKHR)NULL != icd_surface->real_icd_surfaces[i]) {
+                    if (NULL != icd_term->dispatch.DestroySurfaceKHR &&
+                        (VkSurfaceKHR)(uintptr_t)NULL != icd_surface->real_icd_surfaces[i]) {
                         icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, icd_surface->real_icd_surfaces[i], pAllocator);
-                        icd_surface->real_icd_surfaces[i] = (VkSurfaceKHR)NULL;
+                        icd_surface->real_icd_surfaces[i] = (VkSurfaceKHR)(uintptr_t)NULL;
                     }
                 } else {
                     // The real_icd_surface for any ICD not supporting the
                     // proper interface version should be NULL.  If not, then
                     // we have a problem.
-                    assert((VkSurfaceKHR)NULL == icd_surface->real_icd_surfaces[i]);
+                    assert((VkSurfaceKHR)(uintptr_t)NULL == icd_surface->real_icd_surfaces[i]);
                 }
             }
             loader_instance_heap_free(loader_inst, icd_surface->real_icd_surfaces);
@@ -256,7 +257,8 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_GetPhysicalDeviceSurfaceSupportKHR(VkP
     }
 
     VkIcdSurface *icd_surface = (VkIcdSurface *)(uintptr_t)surface;
-    if (NULL != icd_surface->real_icd_surfaces && (VkSurfaceKHR)NULL != icd_surface->real_icd_surfaces[phys_dev_term->icd_index]) {
+    if (NULL != icd_surface->real_icd_surfaces &&
+        (VkSurfaceKHR)(uintptr_t)NULL != icd_surface->real_icd_surfaces[phys_dev_term->icd_index]) {
         return icd_term->dispatch.GetPhysicalDeviceSurfaceSupportKHR(
             phys_dev_term->phys_dev, queueFamilyIndex, icd_surface->real_icd_surfaces[phys_dev_term->icd_index], pSupported);
     }
@@ -307,7 +309,8 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_GetPhysicalDeviceSurfaceCapabilitiesKH
     }
 
     VkIcdSurface *icd_surface = (VkIcdSurface *)(uintptr_t)surface;
-    if (NULL != icd_surface->real_icd_surfaces && (VkSurfaceKHR)NULL != icd_surface->real_icd_surfaces[phys_dev_term->icd_index]) {
+    if (NULL != icd_surface->real_icd_surfaces &&
+        (VkSurfaceKHR)(uintptr_t)NULL != icd_surface->real_icd_surfaces[phys_dev_term->icd_index]) {
         return icd_term->dispatch.GetPhysicalDeviceSurfaceCapabilitiesKHR(
             phys_dev_term->phys_dev, icd_surface->real_icd_surfaces[phys_dev_term->icd_index], pSurfaceCapabilities);
     }
@@ -360,7 +363,8 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_GetPhysicalDeviceSurfaceFormatsKHR(VkP
     }
 
     VkIcdSurface *icd_surface = (VkIcdSurface *)(uintptr_t)surface;
-    if (NULL != icd_surface->real_icd_surfaces && (VkSurfaceKHR)NULL != icd_surface->real_icd_surfaces[phys_dev_term->icd_index]) {
+    if (NULL != icd_surface->real_icd_surfaces &&
+        (VkSurfaceKHR)(uintptr_t)NULL != icd_surface->real_icd_surfaces[phys_dev_term->icd_index]) {
         return icd_term->dispatch.GetPhysicalDeviceSurfaceFormatsKHR(phys_dev_term->phys_dev,
                                                                      icd_surface->real_icd_surfaces[phys_dev_term->icd_index],
                                                                      pSurfaceFormatCount, pSurfaceFormats);
@@ -415,7 +419,8 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_GetPhysicalDeviceSurfacePresentModesKH
     }
 
     VkIcdSurface *icd_surface = (VkIcdSurface *)(uintptr_t)surface;
-    if (NULL != icd_surface->real_icd_surfaces && (VkSurfaceKHR)NULL != icd_surface->real_icd_surfaces[phys_dev_term->icd_index]) {
+    if (NULL != icd_surface->real_icd_surfaces &&
+        (VkSurfaceKHR)(uintptr_t)NULL != icd_surface->real_icd_surfaces[phys_dev_term->icd_index]) {
         return icd_term->dispatch.GetPhysicalDeviceSurfacePresentModesKHR(
             phys_dev_term->phys_dev, icd_surface->real_icd_surfaces[phys_dev_term->icd_index], pPresentModeCount, pPresentModes);
     }
@@ -447,7 +452,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateSwapchainKHR(VkDevice device, co
     if (NULL != icd_term && NULL != icd_term->dispatch.CreateSwapchainKHR) {
         VkIcdSurface *icd_surface = (VkIcdSurface *)(uintptr_t)pCreateInfo->surface;
         if (NULL != icd_surface->real_icd_surfaces) {
-            if ((VkSurfaceKHR)NULL != icd_surface->real_icd_surfaces[icd_index]) {
+            if ((VkSurfaceKHR)(uintptr_t)NULL != icd_surface->real_icd_surfaces[icd_index]) {
                 // We found the ICD, and there is an ICD KHR surface
                 // associated with it, so copy the CreateInfo struct
                 // and point it at the ICD's surface.
@@ -603,7 +608,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -712,7 +718,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateWaylandSurfaceKHR(VkInstance ins
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -720,7 +726,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -833,7 +840,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateXcbSurfaceKHR(VkInstance instanc
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -841,7 +848,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -956,7 +964,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateXlibSurfaceKHR(VkInstance instan
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -964,7 +972,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -1079,7 +1088,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateDirectFBSurfaceEXT(VkInstance in
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -1087,7 +1096,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -1183,7 +1193,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateAndroidSurfaceKHR(VkInstance ins
     pIcdSurface->base.platform = VK_ICD_WSI_PLATFORM_ANDROID;
     pIcdSurface->window = pCreateInfo->window;
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
     return VK_SUCCESS;
 }
@@ -1242,7 +1252,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateHeadlessSurfaceEXT(VkInstance in
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -1250,7 +1260,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -1319,7 +1330,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateMacOSSurfaceMVK(VkInstance insta
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -1327,7 +1338,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -1380,7 +1392,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateIOSSurfaceMVK(VkInstance instanc
     pIcdSurface->base.platform = VK_ICD_WSI_PLATFORM_IOS;
     pIcdSurface->pView = pCreateInfo->pView;
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
     return VK_SUCCESS;
 }
@@ -1446,7 +1458,7 @@ terminator_CreateStreamDescriptorSurfaceGGP(VkInstance instance, const VkStreamD
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -1454,7 +1466,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -1595,7 +1608,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateScreenSurfaceQNX(VkInstance inst
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -1603,7 +1616,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -1712,7 +1726,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateViSurfaceNN(VkInstance instance,
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -1720,7 +1734,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -2030,7 +2045,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateDisplayPlaneSurfaceKHR(VkInstanc
         }
     }
 
-    *pSurface = (VkSurfaceKHR)pIcdSurface;
+    *pSurface = (VkSurfaceKHR)(uintptr_t)pIcdSurface;
 
 out:
 
@@ -2038,7 +2053,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }
@@ -2075,7 +2091,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_CreateSharedSwapchainsKHR(VkDevice dev
     if (NULL != icd_term && NULL != icd_term->dispatch.CreateSharedSwapchainsKHR) {
         VkIcdSurface *icd_surface = (VkIcdSurface *)(uintptr_t)pCreateInfos->surface;
         if (NULL != icd_surface->real_icd_surfaces) {
-            if ((VkSurfaceKHR)NULL != icd_surface->real_icd_surfaces[icd_index]) {
+            if ((VkSurfaceKHR)(uintptr_t)NULL != icd_surface->real_icd_surfaces[icd_index]) {
                 // We found the ICD, and there is an ICD KHR surface
                 // associated with it, so copy the CreateInfo struct
                 // and point it at the ICD's surface.
@@ -2126,7 +2142,7 @@ VKAPI_ATTR VkResult VKAPI_CALL terminator_GetDeviceGroupSurfacePresentModesKHR(V
     struct loader_icd_term *icd_term = loader_get_icd_and_device(device, &dev, &icd_index);
     if (NULL != icd_term && NULL != icd_term->dispatch.GetDeviceGroupSurfacePresentModesKHR) {
         VkIcdSurface *icd_surface = (VkIcdSurface *)(uintptr_t)surface;
-        if (NULL != icd_surface->real_icd_surfaces && (VkSurfaceKHR)NULL != icd_surface->real_icd_surfaces[icd_index]) {
+        if (NULL != icd_surface->real_icd_surfaces && (VkSurfaceKHR)(uintptr_t)NULL != icd_surface->real_icd_surfaces[icd_index]) {
             return icd_term->dispatch.GetDeviceGroupSurfacePresentModesKHR(device, icd_surface->real_icd_surfaces[icd_index],
                                                                            pModes);
         }
@@ -2455,7 +2471,8 @@ out:
         if (NULL != pIcdSurface->real_icd_surfaces) {
             i = 0;
             for (struct loader_icd_term *icd_term = loader_inst->icd_terms; icd_term != NULL; icd_term = icd_term->next, i++) {
-                if ((VkSurfaceKHR)NULL != pIcdSurface->real_icd_surfaces[i] && NULL != icd_term->dispatch.DestroySurfaceKHR) {
+                if ((VkSurfaceKHR)(uintptr_t)NULL != pIcdSurface->real_icd_surfaces[i] &&
+                    NULL != icd_term->dispatch.DestroySurfaceKHR) {
                     icd_term->dispatch.DestroySurfaceKHR(icd_term->instance, pIcdSurface->real_icd_surfaces[i], pAllocator);
                 }
             }