On May 18, 2017 5:15:43 PM GMT+02:00, Bernd Edlinger <bernd.edlin...@hotmail.de> wrote: >Hi, > > >this attempts to fix occasional segmentation faults that are present in >the current snapshot, while previous snapshot was stable. > >I observed numerous crashes but all were non-reproducible, >like the following example: > >In file included from >/home/ed/gnu/gcc-build-1/x86_64-pc-linux-gnu/libstdc++-v3/include/string:52:0, > from >/home/ed/gnu/gcc-8-20170514-1/gcc/testsuite/g++.dg/asan/asan_test_config.h:19, > from >/home/ed/gnu/gcc-8-20170514-1/gcc/testsuite/g++.dg/asan/asan_test_utils.h:17, > from >/home/ed/gnu/gcc-8-20170514-1/gcc/testsuite/g++.dg/asan/asan_globals_test.cc:12, > from >/home/ed/gnu/gcc-8-20170514-1/gcc/testsuite/g++.dg/asan/asan_globals_test-wrapper.cc:2: >/home/ed/gnu/gcc-build-1/x86_64-pc-linux-gnu/libstdc++-v3/include/bits/basic_string.h:6277:22: > >internal compiler error: Segmentation fault >0xd7e17f crash_signal > ../../gcc-8-20170514-1/gcc/toplev.c:337 >0x8f23fe ggc_set_mark(void const*) > ../../gcc-8-20170514-1/gcc/ggc-page.c:1546 >0x7e6a5f gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:133 >0x7e8c7a gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:235 >0x7e8882 gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:365 >0x81b26d gt_ggc_mx_cp_binding_level(void*) > ./gt-cp-name-lookup.h:72 >0x7e6d85 gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:648 >0x7e8ad2 gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:221 >0x7e8eeb gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:337 >0x7e8a3c gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:441 >0x7e7304 gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:606 >0x81b352 gt_ggc_mx_cxx_binding(void*) > ./gt-cp-name-lookup.h:60 >0x7e6d85 gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:648 >0x7e8ef5 gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:336 >0x7e8a3c gt_ggc_mx_lang_tree_node(void*) > ./gt-cp-tree.h:441 >0xb2edbe void gt_ggc_mx<tree_node*>(vec<tree_node*, va_gc, vl_embed>*) > ../../gcc-8-20170514-1/gcc/vec.h:1110 >0xb2edbe gt_ggc_mx_vec_tree_va_gc_(void*) > /home/ed/gnu/gcc-build-1/gcc/gtype-desc.c:1737 >0xac59f5 ggc_mark_root_tab > ../../gcc-8-20170514-1/gcc/ggc-common.c:77 >0xac5c50 ggc_mark_roots() > ../../gcc-8-20170514-1/gcc/ggc-common.c:94 >0x8f2de7 ggc_collect() > ../../gcc-8-20170514-1/gcc/ggc-page.c:2206 >Please submit a full bug report, >with preprocessed source if appropriate. >Please include the complete backtrace with any bug report. > > >The following patch fixes one rather suspicious static tree >object that did not have the GTY attribute, and was therefore >apparently not in the GC root set. > > >Bootstrapped and reg-tested on x86_64-pc-linux-gnu. >Is it OK for trunk?
OK. Richard. > >Thanks >Bernd.
