Merge 06137147a3 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`

include/GLFW/glfw3.h

@@ -2254,6 +2254,26 @@ GLFWAPI int glfwInit(void);
  */
 GLFWAPI void glfwTerminate(void);
 
+/*! @brief Queries if the GLFW library is intialized.
+ *
+ *  This function queries whether the GLFW libarary is in an initialized state.
+ *  The library is considered to be in an initialized state 
+ *  when @ref glfwInit is invoked successfully, and @ref glfwTerminate has not been invoked after.
+ * 
+ *  @return `GLFW_TRUE` if the library is intialized, or `GLFW_FALSE` if otherwise.
+ *
+ *  @thread_safety This function must only be called from the main thread.
+ *
+ *  @sa @ref intro_init
+ *  @sa @ref glfwInit
+ *  @sa @ref glfwTerminate
+ *
+ *  @since Added in version 3.4.
+ *
+ *  @ingroup init
+ */
+GLFWAPI int glfwIsInitialized(void);
+
 /*! @brief Sets the specified init hint to the desired value.
  *
  *  This function sets hints for the next initialization of GLFW.

src/init.c

@@ -437,6 +437,11 @@ GLFWAPI void glfwTerminate(void)
     terminate();
 }
 
+GLFWAPI int glfwIsInitialized(void)
+{
+    return _glfw.initialized;
+}
+
 GLFWAPI void glfwInitHint(int hint, int value)
 {
     switch (hint)

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;
         }