SCI: Workaround for crash in debugger's backtrace

svn-id: r44239

2 files changed, 24 insertions, 4 deletions

diff --git a/engines/sci/engine/kernel.cpp b/engines/sci/engine/kernel.cpp
index 1b06b78159..6c148833ff 100644
--- a/engines/sci/engine/kernel.cpp
+++ b/engines/sci/engine/kernel.cpp
@@ -391,6 +391,26 @@ Kernel::Kernel(ResourceManager *resMan) : _resMan(resMan) {
 Kernel::~Kernel() {
 }
 
+uint Kernel::getSelectorNamesSize() const {
+	return _selectorNames.size();
+}
+const Common::String &Kernel::getSelectorName(uint selector) const {
+	return _selectorNames[selector];
+}
+
+uint Kernel::getKernelNamesSize() const {
+	return _kernelNames.size();
+}
+const Common::String &Kernel::getKernelName(uint number) const {
+	// FIXME: The following check is a temporary workaround for
+	// an issue leading to crashes when using the debugger's backtrace
+	// command.
+	static const Common::String invalid = "(invalid)";
+	if (number >= _kernelNames.size())
+		return invalid;
+	return _kernelNames[number];
+}
+
 void Kernel::detectSciFeatures() {
 	SciVersion version = _resMan->sciVersion();
 
diff --git a/engines/sci/engine/kernel.h b/engines/sci/engine/kernel.h
index 93f8de4157..888db2e0d9 100644
--- a/engines/sci/engine/kernel.h
+++ b/engines/sci/engine/kernel.h
@@ -65,11 +65,11 @@ public:
 	Kernel(ResourceManager *resMan);
 	~Kernel();
 
-	uint getSelectorNamesSize() const { return _selectorNames.size(); }
-	const Common::String &getSelectorName(uint selector) const { return _selectorNames[selector]; }
+	uint getSelectorNamesSize() const;
+	const Common::String &getSelectorName(uint selector) const;
 
-	uint getKernelNamesSize() const { return _kernelNames.size(); }
-	const Common::String &getKernelName(uint number) const { return _kernelNames[number]; }
+	uint getKernelNamesSize() const;
+	const Common::String &getKernelName(uint number) const;
 
 	/**
 	 * Determines the selector ID of a selector by its name