Debugger: Add -file-exec-file when opening a core dump

-file-symbol-file alone doesn't cover all cases. Run -file-exec-file too.

Task-number: QTCREATORBUG-24541
Change-Id: Id4d8f7057f845bce32b28cc8f4db0eadcfcfab28
Reviewed-by: hjk <hjk@qt.io>

src/plugins/debugger/gdb/gdbengine.cpp

@@ -4194,6 +4194,9 @@ void GdbEngine::setupInferior()
         // Do that first, otherwise no symbols are loaded.
         QFileInfo fi = executable.toFileInfo();
         QString path = fi.absoluteFilePath();
+        // This is *not* equivalent to -file-exec-and-symbols. If the file is not executable
+        // (contains only debugging symbols), this should still work.
+        runCommand({"-file-exec-file \"" + path + '"'});
         runCommand({"-file-symbol-file \"" + path + '"',
                     CB(handleFileExecAndSymbols)});