Internals: Implement a continuable IM_DEBUG_BREAK on GCC for common archs. (#2673)
diff --git a/imgui_internal.h b/imgui_internal.h
index 9e4fc15..7b430dc 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -253,12 +253,19 @@
#endif
// Debug Tools
-// Use 'Metrics->Tools->Item Picker' to break into the call-stack of a specific item.
+// Use 'Metrics/Debugger->Tools->Item Picker' to break into the call-stack of a specific item.
+// This will call IM_DEBUG_BREAK() which you may redefine yourself. See https://github.com/scottt/debugbreak for more reference.
#ifndef IM_DEBUG_BREAK
-#if defined(__clang__)
-#define IM_DEBUG_BREAK() __builtin_debugtrap()
-#elif defined (_MSC_VER)
+#if defined (_MSC_VER)
#define IM_DEBUG_BREAK() __debugbreak()
+#elif defined(__clang__)
+#define IM_DEBUG_BREAK() __builtin_debugtrap()
+#elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
+#define IM_DEBUG_BREAK() __asm__ volatile("int $0x03")
+#elif defined(__GNUC__) && defined(__thumb__)
+#define IM_DEBUG_BREAK() __asm__ volatile(".inst 0xde01")
+#elif defined(__GNUC__) defined(__arm__) && !defined(__thumb__)
+#define IM_DEBUG_BREAK() __asm__ volatile(".inst 0xe7f001f0");
#else
#define IM_DEBUG_BREAK() IM_ASSERT(0) // It is expected that you define IM_DEBUG_BREAK() into something that will break nicely in a debugger!
#endif
