commit fe245914114588f272b0924538fdd43f6c127a26
author Tatsuya Yatagawa <tatsy.mail@gmail.com> Sat Jun 05 23:27:31 2021 +0900
committer GitHub <noreply@github.com> Sat Jun 05 16:27:31 2021 +0200
tree 30d5b03e2df061ecd87897bfdd0a19a847d5cf7c
parent 94b680e83052b9ff2e877360309020b72db057f2

Backends: OpenGL3: Fix access violation due to NULL from glGetStringi. (#4201)

backends/imgui_impl_opengl3.cpp

diff --git a/backends/imgui_impl_opengl3.cpp b/backends/imgui_impl_opengl3.cpp
index 2ff804e..712de9b 100644
--- a/backends/imgui_impl_opengl3.cpp
+++ b/backends/imgui_impl_opengl3.cpp
@@ -247,7 +247,7 @@
     for (GLint i = 0; i < num_extensions; i++)
     {
         const char* extension = (const char*)glGetStringi(GL_EXTENSIONS, i);
-        if (strcmp(extension, "GL_ARB_clip_control") == 0)
+        if (extension != NULL && strcmp(extension, "GL_ARB_clip_control") == 0)
             g_HasClipOrigin = true;
     }
 #endif