impr: Properly print asserts

lib/external/imgui/include/imconfig.h

@@ -14,10 +14,16 @@
 
 #pragma once
 
+#include <assert.h>
+
 //---- Define assertion handler. Defaults to calling assert().
 // If your macro uses multiple statements, make sure is enclosed in a 'do { .. } while (0)' block so it can be used as a single statement.
 //#define IM_ASSERT(_EXPR)  MyAssert(_EXPR)
 //#define IM_ASSERT(_EXPR)  ((void)(_EXPR))     // Disable asserts
+namespace hex::log::impl {
+    void assertionHandler(bool expr, const char* expr_str, const char* file, int line);
+}
+#define IM_ASSERT(_EXPR) hex::log::impl::assertionHandler(_EXPR, #_EXPR, __FILE__, __LINE__)
 
 //---- Define attributes of all API symbols declarations, e.g. for DLL under Windows
 // Using Dear ImGui via a shared library is not recommended, because of function call overhead and because we don't guarantee backward nor forward ABI compatibility.

lib/libimhex/source/helpers/logger.cpp

@@ -42,4 +42,14 @@ namespace hex::log::impl {
         return logEntries;
     }
 
+    void assertionHandler(bool expr, const char* expr_str, const char* file, int line) {
+        if (!expr) {
+            log::error("Assertion failed: {} at {}:{}", expr_str, file, line);
+
+            #if defined (DEBUG)
+                std::abort();
+            #endif
+        }
+    }
+
 }