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-rw-r--r--src/3rdparty/squirrel/squirrel/sqvm.cpp14
1 files changed, 13 insertions, 1 deletions
diff --git a/src/3rdparty/squirrel/squirrel/sqvm.cpp b/src/3rdparty/squirrel/squirrel/sqvm.cpp
index 2c277d996..720f21297 100644
--- a/src/3rdparty/squirrel/squirrel/sqvm.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqvm.cpp
@@ -1526,7 +1526,19 @@ void SQVM::Pop(SQInteger n) {
}
}
-void SQVM::Push(const SQObjectPtr &o) { _stack[_top++] = o; }
+void SQVM::Push(const SQObjectPtr &o) {
+ /* Normally the stack shouldn't get this full, sometimes it might. As of now
+ * all cases have been bugs in "our" (OpenTTD) code. Trigger an assert for
+ * all debug builds and for the release builds just increase the stack size.
+ * This way getting a false positive isn't that bad (releases work fine) and
+ * if there is something fishy it can be caught in RCs/nightlies. */
+#ifdef NDEBUG
+ if (_top >= (int)_stack.capacity()) _stack.resize(2 * _stack.capacity());
+#else
+ assert(_top < (int)_stack.capacity());
+#endif
+ _stack[_top++] = o;
+}
SQObjectPtr &SQVM::Top() { return _stack[_top-1]; }
SQObjectPtr &SQVM::PopGet() { return _stack[--_top]; }
SQObjectPtr &SQVM::GetUp(SQInteger n) { return _stack[_top+n]; }