First Commit

externals/cryptopp/TestPrograms/test_nodevirtualize.cpp

@@ -0,0 +1,19 @@
+#include <string>
+
+// https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
+#define GCC_VERSION (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
+
+int main(int argc, char* argv[])
+{
+    // GCC 12 is removing live code. We don't know why.
+    // https://github.com/weidai11/cryptopp/issues/1134 and
+    // https://github.com/weidai11/cryptopp/issues/1141
+#if defined(__linux__) && (GCC_VERSION >= 120000)
+    // On successful compile -fno-devirtualize will be used
+    // to work around the problem.
+    ;;
+#else
+    int x[-1];
+#endif
+    return 0;
+}