With the conversion of passes to C++ classes, plugins that add custom passes must create them by creating their own derived classes of the relevant subclass of opt_pass. gcc itself is built with -fno-rtti, hence there is no RTTI available for the opt_pass class hierarchy.
Hence plugins that create passes will need to be built with RTTI disabled in order to link against gcc, or they will fail to load, with an error like: cc1: error: cannot load plugin ./selfassign.so ./selfassign.so: undefined symbol: _ZTI8opt_pass (aka "typeinfo for opt_pass"). gcc/testsuite * lib/plugin-support.exp (plugin-test-execute): Add -fno-rtti to optstr when building plugins. --- gcc/testsuite/lib/plugin-support.exp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/gcc/testsuite/lib/plugin-support.exp b/gcc/testsuite/lib/plugin-support.exp index 88033b3..017f3fd 100644 --- a/gcc/testsuite/lib/plugin-support.exp +++ b/gcc/testsuite/lib/plugin-support.exp @@ -104,7 +104,7 @@ proc plugin-test-execute { plugin_src plugin_tests } { set optstr [concat $optstr "-DIN_GCC -fPIC -shared -undefined dynamic_lookup"] } else { set plug_cflags $PLUGINCFLAGS - set optstr "$includes $extra_flags -DIN_GCC -fPIC -shared" + set optstr "$includes $extra_flags -DIN_GCC -fPIC -shared -fno-rtti" } # Temporarily switch to the environment for the plugin compiler. -- 1.7.11.7