Hi, I went through excercise of running LTO bootstrap with ODR verification on. There are some typename clashes I guess we want to fix. I wonder what approach is preferred, do we want to introduce anonymous namespaces for those?
Honza ../../gcc/tlink.c:62:16: warning: type ‘struct file_hash_entry’ violates one definition rule [-Wodr] typedef struct file_hash_entry ^ ../../libcpp/files.c:143:8: note: a different type is defined in another translation unit struct file_hash_entry ^ ../../gcc/tlink.c:64:15: note: the first difference of corresponding definitions is field ‘key’ const char *key; ^ ../../libcpp/files.c:145:27: note: a field with different name is defined in another translation unit struct file_hash_entry *next; ^ ../../gcc/ipa-devirt.c:2674:0: warning: type ‘struct type_change_info’ violates one definition rule [-Wodr] struct type_change_info ^ ../../gcc/ipa-prop.c:595:0: note: a different type is defined in another translation unit struct type_change_info ^ ../../gcc/ipa-devirt.c:2681:0: note: the first difference of corresponding definitions is field ‘instance’ tree instance; ^ ../../gcc/ipa-prop.c:602:0: note: a field with different name is defined in another translation unit tree object; ^ ../../gcc/gcse.c:294:0: warning: type ‘struct occr’ violates one definition rule [-Wodr] struct occr ^ ../../gcc/postreload-gcse.c:160:0: note: a different type is defined in another translation unit struct occr ^ ../../gcc/gcse.c:297:0: note: the first difference of corresponding definitions is field ‘next’ struct occr *next; ^ ../../gcc/postreload-gcse.c:163:0: note: a field of same name but different type is defined in another translation unit struct occr *next; ^ ../../gcc/gcse.c:259:0: warning: type ‘struct expr’ violates one definition rule [-Wodr] struct expr ^ ../../gcc/postreload-gcse.c:92:0: note: a different type is defined in another translation unit struct expr ^ ../../gcc/gcse.c:264:0: note: the first difference of corresponding definitions is field ‘bitmap_index’ int bitmap_index; ^ ../../gcc/postreload-gcse.c:98:0: note: a field with different name is defined in another translation unit hashval_t hash; ^ ../../gcc/predict.c:2499:0: warning: type ‘struct block_info_def’ violates one definition rule [-Wodr] typedef struct block_info_def ^ ../../gcc/reg-stack.c:208:0: note: a different type is defined in another translation unit typedef struct block_info_def ^ ../../gcc/predict.c:2502:0: note: the first difference of corresponding definitions is field ‘frequency’ sreal frequency; ^ ../../gcc/reg-stack.c:210:0: note: a field with different name is defined in another translation unit struct stack_def stack_in; /* Input stack configuration. */ ^ ../../gcc/lra-eliminations.c:80:0: warning: type ‘struct elim_table’ violates one definition rule [-Wodr] struct elim_table ^ ../../gcc/reload1.c:264:0: note: a different type is defined in another translation unit struct elim_table ^ ../../gcc/lra-eliminations.c:88:0: note: the first difference of corresponding definitions is field ‘previous_offset’ HOST_WIDE_INT previous_offset; ^ ../../gcc/reload1.c:268:0: note: a field with different name is defined in another translation unit HOST_WIDE_INT initial_offset; /* Initial difference between values. */ ^ ../../gcc/tree-ssa-ccp.c:169:0: warning: type ‘struct prop_value_d’ violates one definition rule [-Wodr] struct prop_value_d { ^ ../../gcc/tree-ssa-copy.c:79:0: note: a different type is defined in another translation unit struct prop_value_d { ^ ../../gcc/tree-ssa-ccp.c:171:0: note: the first difference of corresponding definitions is field ‘lattice_val’ ccp_lattice_t lattice_val; ^ ../../gcc/tree-ssa-copy.c:81:0: note: a field with different name is defined in another translation unit tree value; ^ ../../gcc/profile.h:26:0: warning: type ‘struct edge_info’ violates one definition rule [-Wodr] struct edge_info ^ ../../gcc/tree-ssa-dom.c:113:0: note: a different type is defined in another translation unit struct edge_info ^ ../../gcc/profile.h:28:0: note: the first difference of corresponding definitions is field ‘count_valid’ unsigned int count_valid:1; ^ ../../gcc/tree-ssa-dom.c:117:0: note: a field with different name is defined in another translation unit tree lhs; ^ ../../gcc/tree-ssa-loop-im.c:119:0: warning: type ‘struct mem_ref’ violates one definition rule [-Wodr] typedef struct mem_ref ^ ../../gcc/tree-ssa-loop-prefetch.c:271:0: note: a different type is defined in another translation unit struct mem_ref ^ ../../gcc/tree-ssa-loop-im.c:121:0: note: the first difference of corresponding definitions is field ‘id’ unsigned id; /* ID assigned to the memory reference ^ ../../gcc/tree-ssa-loop-prefetch.c:273:0: note: a field with different name is defined in another translation unit gimple stmt; /* Statement in that the reference appears. */ ^ ../../gcc/bitmap.c:2146:8: warning: type ‘struct output_info’ violates one definition rule [-Wodr] struct output_info ^ ../../gcc/alloc-pool.c:342:0: note: a different type is defined in another translation unit struct output_info ^ ../../gcc/bitmap.c:2148:12: note: the first difference of corresponding definitions is field ‘size’ uint64_t size; ^ ../../gcc/alloc-pool.c:344:0: note: a field with different name is defined in another translation unit unsigned long total_created; ^ ../../gcc/gcse.c:320:0: warning: type ‘struct hash_table_d’ violates one definition rule [-Wodr] struct hash_table_d ^ ../../gcc/cprop.c:96:0: note: a different type is defined in another translation unit struct hash_table_d ^ ../../gcc/gcse.c:324:0: note: the first difference of corresponding definitions is field ‘table’ struct expr **table; ^ ../../gcc/cprop.c:100:0: note: a field of same name but different type is defined in another translation unit struct expr **table; ^ ../../gcc/profile.c:77:0: warning: type ‘struct bb_info’ violates one definition rule [-Wodr] struct bb_info { ^ ../../gcc/dse.c:424:0: note: a different type is defined in another translation unit struct bb_info ^ ../../gcc/profile.c:78:0: note: the first difference of corresponding definitions is field ‘count_valid’ unsigned int count_valid : 1; ^ ../../gcc/dse.c:430:0: note: a field with different name is defined in another translation unit insn_info_t last_insn; ^ ../../gcc/tree-ssa-structalias.c:1526:0: warning: type ‘struct topo_info’ violates one definition rule [-Wodr] struct topo_info ^ ../../gcc/ipa-cp.c:577:0: note: a different type is defined in another translation unit { ^ ../../gcc/tree-ssa-structalias.c:1529:0: note: the first difference of corresponding definitions is field ‘visited’ sbitmap visited; ^ ../../gcc/ipa-cp.c:577:0: note: a field with different name is defined in another translation unit { ^ ../../gcc/ggc-common.c:945:0: warning: type ‘struct ptr_hash_entry’ violates one definition rule [-Wodr] struct ptr_hash_entry ^ ../../gcc/vec.c:83:0: note: a different type is defined in another translation unit void *ptr; ^ ../../gcc/ggc-common.c:948:0: note: the first difference of corresponding definitions is field ‘loc’ struct loc_descriptor *loc; ^ ../../gcc/vec.c:83:0: note: a field of same name but different type is defined in another translation unit void *ptr; ^ ../../gcc/cp/mangle.c:93:0: warning: type ‘struct globals’ violates one definition rule [-Wodr] typedef struct GTY(()) globals { ^ ../../gcc/ggc-page.c:381:0: note: a different type is defined in another translation unit static struct globals ^ ../../gcc/cp/mangle.c:96:0: note: the first difference of corresponding definitions is field ‘substitutions’ vec<tree, va_gc> *substitutions; ^ ../../gcc/ggc-page.c:387:0: note: a field with different name is defined in another translation unit page_entry *pages[NUM_ORDERS]; ^ ../../gcc/alloc-pool.c:342:0: warning: type ‘struct output_info’ violates one definition rule [-Wodr] struct output_info ^ ../../gcc/bitmap.c:2146:0: note: a different type is defined in another translation unit struct output_info ^ ../../gcc/alloc-pool.c:344:0: note: the first difference of corresponding definitions is field ‘total_created’ unsigned long total_created; ^ ../../gcc/bitmap.c:2148:0: note: a field with different name is defined in another translation unit uint64_t size; ^ ../../gcc/ipa-devirt.c:2674:0: warning: type ‘struct type_change_info’ violates one definition rule [-Wodr] struct type_change_info ^ ../../gcc/ipa-prop.c:595:0: note: a different type is defined in another translation unit struct type_change_info ^ ../../gcc/ipa-devirt.c:2681:0: note: the first difference of corresponding definitions is field ‘instance’ tree instance; ^ ../../gcc/ipa-prop.c:602:0: note: a field with different name is defined in another translation unit tree object; ^ ../../gcc/gcse.c:294:0: warning: type ‘struct occr’ violates one definition rule [-Wodr] struct occr ^ ../../gcc/postreload-gcse.c:160:0: note: a different type is defined in another translation unit struct occr ^ ../../gcc/gcse.c:297:0: note: the first difference of corresponding definitions is field ‘next’ struct occr *next; ^ ../../gcc/postreload-gcse.c:163:0: note: a field of same name but different type is defined in another translation unit struct occr *next; ^ ../../gcc/gcse.c:259:0: warning: type ‘struct expr’ violates one definition rule [-Wodr] struct expr ^ ../../gcc/postreload-gcse.c:92:0: note: a different type is defined in another translation unit struct expr ^ ../../gcc/gcse.c:264:0: note: the first difference of corresponding definitions is field ‘bitmap_index’ int bitmap_index; ^ ../../gcc/postreload-gcse.c:98:0: note: a field with different name is defined in another translation unit hashval_t hash; ^ ../../gcc/predict.c:2499:0: warning: type ‘struct block_info_def’ violates one definition rule [-Wodr] typedef struct block_info_def ^ ../../gcc/reg-stack.c:208:0: note: a different type is defined in another translation unit typedef struct block_info_def ^ ../../gcc/predict.c:2502:0: note: the first difference of corresponding definitions is field ‘frequency’ sreal frequency; ^ ../../gcc/reg-stack.c:210:0: note: a field with different name is defined in another translation unit struct stack_def stack_in; /* Input stack configuration. */ ^ ../../gcc/lra-eliminations.c:80:0: warning: type ‘struct elim_table’ violates one definition rule [-Wodr] struct elim_table ^ ../../gcc/reload1.c:264:0: note: a different type is defined in another translation unit struct elim_table ^ ../../gcc/lra-eliminations.c:88:0: note: the first difference of corresponding definitions is field ‘previous_offset’ HOST_WIDE_INT previous_offset; ^ ../../gcc/reload1.c:268:0: note: a field with different name is defined in another translation unit HOST_WIDE_INT initial_offset; /* Initial difference between values. */ ^ ../../gcc/cp/semantics.c:4075:0: warning: type ‘struct nrv_data’ violates one definition rule [-Wodr] struct nrv_data ^ ../../gcc/tree-nrv.c:58:0: note: a different type is defined in another translation unit struct nrv_data ^ ../../gcc/cp/semantics.c:4081:0: note: the first difference of corresponding definitions is field ‘visited’ hash_table<pointer_hash <tree_node> > visited; ^ ../../gcc/tree-nrv.c:67:0: note: a field with different name is defined in another translation unit int modified; ^ ../../gcc/tree-ssa-ccp.c:169:0: warning: type ‘struct prop_value_d’ violates one definition rule [-Wodr] struct prop_value_d { ^ ../../gcc/tree-ssa-copy.c:79:0: note: a different type is defined in another translation unit struct prop_value_d { ^ ../../gcc/tree-ssa-ccp.c:171:0: note: the first difference of corresponding definitions is field ‘lattice_val’ ccp_lattice_t lattice_val; ^ ../../gcc/tree-ssa-copy.c:81:0: note: a field with different name is defined in another translation unit tree value; ^ ../../gcc/profile.h:26:0: warning: type ‘struct edge_info’ violates one definition rule [-Wodr] struct edge_info ^ ../../gcc/tree-ssa-dom.c:113:0: note: a different type is defined in another translation unit struct edge_info ^ ../../gcc/profile.h:28:0: note: the first difference of corresponding definitions is field ‘count_valid’ unsigned int count_valid:1; ^ ../../gcc/tree-ssa-dom.c:117:0: note: a field with different name is defined in another translation unit tree lhs; ^ ../../gcc/tree-ssa-loop-im.c:119:0: warning: type ‘struct mem_ref’ violates one definition rule [-Wodr] typedef struct mem_ref ^ ../../gcc/tree-ssa-loop-prefetch.c:271:0: note: a different type is defined in another translation unit struct mem_ref ^ ../../gcc/tree-ssa-loop-im.c:121:0: note: the first difference of corresponding definitions is field ‘id’ unsigned id; /* ID assigned to the memory reference ^ ../../gcc/tree-ssa-loop-prefetch.c:273:0: note: a field with different name is defined in another translation unit gimple stmt; /* Statement in that the reference appears. */ ^ ../../gcc/gcse.c:320:0: warning: type ‘struct hash_table_d’ violates one definition rule [-Wodr] struct hash_table_d ^ ../../gcc/cprop.c:58:0: note: a different type is defined in another translation unit struct occr ^ ../../gcc/gcse.c:324:0: note: the first difference of corresponding definitions is field ‘table’ struct expr **table; ^ ../../gcc/cprop.c:58:0: note: a field of same name but different type is defined in another translation unit struct occr ^ ../../gcc/profile.c:77:0: warning: type ‘struct bb_info’ violates one definition rule [-Wodr] struct bb_info { ^ ../../gcc/dse.c:1079:0: note: a different type is defined in another translation unit free_read_records (bb_info_t bb_info) ^ ../../gcc/profile.c:78:0: note: the first difference of corresponding definitions is field ‘count_valid’ unsigned int count_valid : 1; ^ ../../gcc/dse.c:1079:0: note: a field with different name is defined in another translation unit free_read_records (bb_info_t bb_info) ^ ../../gcc/tree-ssa-structalias.c:1526:0: warning: type ‘struct topo_info’ violates one definition rule [-Wodr] struct topo_info ^ ../../gcc/ipa-cp.c:577:0: note: a different type is defined in another translation unit { ^ ../../gcc/tree-ssa-structalias.c:1529:0: note: the first difference of corresponding definitions is field ‘visited’ sbitmap visited; ^ ../../gcc/ipa-cp.c:577:0: note: a field with different name is defined in another translation unit { ^ ../../gcc/ggc-common.c:945:0: warning: type ‘struct ptr_hash_entry’ violates one definition rule [-Wodr] struct ptr_hash_entry ^ ../../gcc/vec.c:83:0: note: a different type is defined in another translation unit void *ptr; ^ ../../gcc/ggc-common.c:948:0: note: the first difference of corresponding definitions is field ‘loc’ struct loc_descriptor *loc; ^ ../../gcc/vec.c:83:0: note: a field of same name but different type is defined in another translation unit void *ptr; ^ ../../gcc/cp/call.c:83:8: warning: type ‘struct conversion’ violates one definition rule [-Wodr] struct conversion { ^ ../../libcpp/charset.c:613:0: note: a different type is defined in another translation unit const char *pair; ^ ../../gcc/cp/call.c:85:19: note: the first difference of corresponding definitions is field ‘kind’ conversion_kind kind; ^ ../../libcpp/charset.c:613:0: note: a field with different name is defined in another translation unit const char *pair; ^ ../../gcc/alloc-pool.c:342:0: warning: type ‘struct output_info’ violates one definition rule [-Wodr] struct output_info ^ ../../gcc/bitmap.c:2146:0: note: a different type is defined in another translation unit struct output_info ^ ../../gcc/alloc-pool.c:344:0: note: the first difference of corresponding definitions is field ‘total_created’ unsigned long total_created; ^ ../../gcc/bitmap.c:2148:0: note: a field with different name is defined in another translation unit uint64_t size; ^ ../../gcc/ipa-devirt.c:2674:0: warning: type ‘struct type_change_info’ violates one definition rule [-Wodr] struct type_change_info ^ ../../gcc/ipa-prop.c:595:0: note: a different type is defined in another translation unit struct type_change_info ^ ../../gcc/ipa-devirt.c:2681:0: note: the first difference of corresponding definitions is field ‘instance’ tree instance; ^ ../../gcc/ipa-prop.c:602:0: note: a field with different name is defined in another translation unit tree object; ^ ../../gcc/gcse.c:294:0: warning: type ‘struct occr’ violates one definition rule [-Wodr] struct occr ^ ../../gcc/postreload-gcse.c:160:0: note: a different type is defined in another translation unit struct occr ^ ../../gcc/gcse.c:297:0: note: the first difference of corresponding definitions is field ‘next’ struct occr *next; ^ ../../gcc/postreload-gcse.c:163:0: note: a field of same name but different type is defined in another translation unit struct occr *next; ^ ../../gcc/gcse.c:259:0: warning: type ‘struct expr’ violates one definition rule [-Wodr] struct expr ^ ../../gcc/postreload-gcse.c:92:0: note: a different type is defined in another translation unit struct expr ^ ../../gcc/gcse.c:264:0: note: the first difference of corresponding definitions is field ‘bitmap_index’ int bitmap_index; ^ ../../gcc/postreload-gcse.c:98:0: note: a field with different name is defined in another translation unit hashval_t hash; ^ ../../gcc/predict.c:2499:0: warning: type ‘struct block_info_def’ violates one definition rule [-Wodr] typedef struct block_info_def ^ ../../gcc/reg-stack.c:208:0: note: a different type is defined in another translation unit typedef struct block_info_def ^ ../../gcc/predict.c:2502:0: note: the first difference of corresponding definitions is field ‘frequency’ sreal frequency; ^ ../../gcc/reg-stack.c:210:0: note: a field with different name is defined in another translation unit struct stack_def stack_in; /* Input stack configuration. */ ^ ../../gcc/lra-eliminations.c:80:0: warning: type ‘struct elim_table’ violates one definition rule [-Wodr] struct elim_table ^ ../../gcc/reload1.c:264:0: note: a different type is defined in another translation unit struct elim_table ^ ../../gcc/lra-eliminations.c:88:0: note: the first difference of corresponding definitions is field ‘previous_offset’ HOST_WIDE_INT previous_offset; ^ ../../gcc/reload1.c:268:0: note: a field with different name is defined in another translation unit HOST_WIDE_INT initial_offset; /* Initial difference between values. */ ^ ../../gcc/tree-ssa-ccp.c:169:0: warning: type ‘struct prop_value_d’ violates one definition rule [-Wodr] struct prop_value_d { ^ ../../gcc/tree-ssa-copy.c:79:0: note: a different type is defined in another translation unit struct prop_value_d { ^ ../../gcc/tree-ssa-ccp.c:171:0: note: the first difference of corresponding definitions is field ‘lattice_val’ ccp_lattice_t lattice_val; ^ ../../gcc/tree-ssa-copy.c:81:0: note: a field with different name is defined in another translation unit tree value; ^ ../../gcc/profile.h:26:0: warning: type ‘struct edge_info’ violates one definition rule [-Wodr] struct edge_info ^ ../../gcc/tree-ssa-dom.c:113:0: note: a different type is defined in another translation unit struct edge_info ^ ../../gcc/profile.h:28:0: note: the first difference of corresponding definitions is field ‘count_valid’ unsigned int count_valid:1; ^ ../../gcc/tree-ssa-dom.c:117:0: note: a field with different name is defined in another translation unit tree lhs; ^ ../../gcc/tree-ssa-loop-im.c:119:0: warning: type ‘struct mem_ref’ violates one definition rule [-Wodr] typedef struct mem_ref ^ ../../gcc/tree-ssa-loop-prefetch.c:271:0: note: a different type is defined in another translation unit struct mem_ref ^ ../../gcc/tree-ssa-loop-im.c:121:0: note: the first difference of corresponding definitions is field ‘id’ unsigned id; /* ID assigned to the memory reference ^ ../../gcc/tree-ssa-loop-prefetch.c:273:0: note: a field with different name is defined in another translation unit gimple stmt; /* Statement in that the reference appears. */ ^ ../../gcc/gcse.c:320:0: warning: type ‘struct hash_table_d’ violates one definition rule [-Wodr] struct hash_table_d ^ ../../gcc/cprop.c:58:0: note: a different type is defined in another translation unit struct occr ^ ../../gcc/gcse.c:324:0: note: the first difference of corresponding definitions is field ‘table’ struct expr **table; ^ ../../gcc/cprop.c:58:0: note: a field of same name but different type is defined in another translation unit struct occr ^ ../../gcc/profile.c:77:0: warning: type ‘struct bb_info’ violates one definition rule [-Wodr] struct bb_info { ^ ../../gcc/dse.c:1079:0: note: a different type is defined in another translation unit free_read_records (bb_info_t bb_info) ^ ../../gcc/profile.c:78:0: note: the first difference of corresponding definitions is field ‘count_valid’ unsigned int count_valid : 1; ^ ../../gcc/dse.c:1079:0: note: a field with different name is defined in another translation unit free_read_records (bb_info_t bb_info) ^ ../../gcc/tree-ssa-structalias.c:1526:0: warning: type ‘struct topo_info’ violates one definition rule [-Wodr] struct topo_info ^ ../../gcc/ipa-cp.c:577:0: note: a different type is defined in another translation unit { ^ ../../gcc/tree-ssa-structalias.c:1529:0: note: the first difference of corresponding definitions is field ‘visited’ sbitmap visited; ^ ../../gcc/ipa-cp.c:577:0: note: a field with different name is defined in another translation unit { ^ ../../gcc/ggc-common.c:945:0: warning: type ‘struct ptr_hash_entry’ violates one definition rule [-Wodr] struct ptr_hash_entry ^ ../../gcc/vec.c:83:0: note: a different type is defined in another translation unit void *ptr; ^ ../../gcc/ggc-common.c:948:0: note: the first difference of corresponding definitions is field ‘loc’ struct loc_descriptor *loc; ^ ../../gcc/vec.c:83:0: note: a field of same name but different type is defined in another translation unit void *ptr; ^ /usr/bin/ld.gold.real: warning: using 'GLIBCXX_3.4' as version for '_ZNKSt15basic_stringbufIwSt11char_traitsIwESaIwEE3strEv' which is also named in version 'GLIBCXX_3.4.6' in script /usr/bin/ld.gold.real: warning: using 'GLIBCXX_3.4' as version for '_ZNKSs11_M_disjunctEPKc' which is also named in version 'GLIBCXX_3.4.5' in script /usr/bin/ld.gold.real: warning: using 'GLIBCXX_3.4' as version for '_ZNKSbIwSt11char_traitsIwESaIwEE11_M_disjunctEPKw' which is also named in version 'GLIBCXX_3.4.5' in script make[2]: *** [compare] Error 1 make[1]: *** [stage3-bubble] Error 2 make: *** [all] Error 2