https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68028
--- Comment #5 from martin <ranjan.amit8 at gmail dot com> --- Hi Richard, There are the changes came after gcc-4.9.3 because of that I am getting above issue, but if I comment these 2 line in file (tree-streamer-in.c & tree-streamer-out.c) then it resolves the issue I am facing in gcc-5.2.0. Because of these changes, the gcc-5.2.0 fails but gcc-4.9.3 sources are working fine. https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=73527b1dbb74fb8a2fcb92627292c1c0334c8364 Index: =================================================================== --- a/gcc/tree-streamer-in.c 2015-03-27 12:28:59.000000000 +0530 +++ b/gcc/tree-streamer-in.c 2015-10-23 03:09:08.758332929 +0530 @@ -802,7 +802,7 @@ lto_input_ts_function_decl_tree_pointers /* DECL_STRUCT_FUNCTION is loaded on demand by cgraph_get_body. */ DECL_FUNCTION_PERSONALITY (expr) = stream_read_tree (ib, data_in); #ifndef ACCEL_COMPILER - DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in); +/* DECL_FUNCTION_SPECIFIC_TARGET (expr) = stream_read_tree (ib, data_in);*/ #endif DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr) = stream_read_tree (ib, data_in); =================================================================== --- a/gcc/tree-streamer-out.c 2015-02-26 17:56:11.000000000 +0530 +++ b/gcc/tree-streamer-out.c 2015-10-23 03:09:13.542332646 +0530 @@ -708,7 +708,7 @@ write_ts_function_decl_tree_pointers (st stream_write_tree (ob, DECL_FUNCTION_PERSONALITY (expr), ref_p); /* Don't stream these when passing things to a different target. */ if (!lto_stream_offload_p) - stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_TARGET (expr), ref_p); + /* stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_TARGET (expr), ref_p);*/ stream_write_tree (ob, DECL_FUNCTION_SPECIFIC_OPTIMIZATION (expr), ref_p); } Thanks, Martin