Merge 54ecc8a9f5 into ac10768495

The buffer storing the contents of the data offer being read could leak
if buffer reallocation or reading from the pipe failed.

README.md

@@ -133,6 +133,7 @@ information on what to include when reporting a bug.
  - [Wayland] Bugfix: A drag entering a non-GLFW surface could cause a segfault
  - [Wayland] Bugfix: Ignore key repeat events when no window has keyboard focus (#2727)
  - [Wayland] Bugfix: Reset key repeat timer when window destroyed (#2741,#2727)
+ - [Wayland] Bugfix: Memory would leak if reading a data offer failed midway
  - [X11] Bugfix: Running without a WM could trigger an assert (#2593,#2601,#2631)
  - [Null] Added Vulkan 'window' surface creation via `VK_EXT_headless_surface`
  - [Null] Added EGL context creation on Mesa via `EGL_MESA_platform_surfaceless`

src/wl_window.c

@@ -1333,6 +1333,7 @@ static char* readDataOfferAsString(struct wl_data_offer* offer, const char* mime
             if (!longer)
             {
                 _glfwInputError(GLFW_OUT_OF_MEMORY, NULL);
+                _glfw_free(string);
                 close(fds[0]);
                 return NULL;
             }
@@ -1352,6 +1353,7 @@ static char* readDataOfferAsString(struct wl_data_offer* offer, const char* mime
             _glfwInputError(GLFW_PLATFORM_ERROR,
                             "Wayland: Failed to read from data offer pipe: %s",
                             strerror(errno));
+            _glfw_free(string);
             close(fds[0]);
             return NULL;
         }

src/x11_window.c

@@ -2339,6 +2339,9 @@ void _glfwRestoreWindowX11(_GLFWwindow* window)
 
     if (_glfwWindowIconifiedX11(window))
     {
+        // Some window managers do not unmap iconified windows, and XMapWindow is
+        // then no-op. Explicitly unmap the window to make sure it gets restored.
+        XUnmapWindow(_glfw.x11.display, window->x11.handle);
         XMapWindow(_glfw.x11.display, window->x11.handle);
         waitForVisibilityNotify(window);
     }

tests/iconify.c

@@ -56,6 +56,8 @@ static void error_callback(int error, const char* description)
 
 static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
 {
+    static GLFWwindow *iconified;
+
     printf("%0.2f Key %s\n",
            glfwGetTime(),
            action == GLFW_PRESS ? "pressed" : "released");
@@ -67,12 +69,15 @@ static void key_callback(GLFWwindow* window, int key, int scancode, int action,
     {
         case GLFW_KEY_I:
             glfwIconifyWindow(window);
+            iconified = window;
             break;
         case GLFW_KEY_M:
             glfwMaximizeWindow(window);
             break;
         case GLFW_KEY_R:
+            if (iconified) window = iconified;
             glfwRestoreWindow(window);
+            iconified = NULL;
             break;
         case GLFW_KEY_ESCAPE:
             glfwSetWindowShouldClose(window, GLFW_TRUE);
@@ -253,9 +258,10 @@ int main(int argc, char** argv)
         if (fullscreen)
             monitor = glfwGetPrimaryMonitor();
 
-        window_count = 1;
+        window_count = 2;
         windows = calloc(window_count, sizeof(GLFWwindow*));
         windows[0] = create_window(monitor);
+        windows[1] = create_window(monitor);
     }
 
     for (i = 0;  i < window_count;  i++)