[Bug c++/55418] New: Valgrind: Conditional jump or move depends on uninitialised value(s) in implicitly_declare_fn() method.c:1623

["markus at trippelsdorf dot de" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55418

             Bug #: 55418
           Summary: Valgrind: Conditional jump or move depends on
                    uninitialised value(s) in implicitly_declare_fn()
                    method.c:1623
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: markus@trippelsdorf.de


Just saw this during a -enable-checking=yes,valgrind build:

 % /var/tmp/gcc_valgrind/usr/local/bin/g++ -std=gnu++11 -c
/home/markus/gcc/libstdc++-v3/src/c++11/functexcept.cc
==1267== Conditional jump or move depends on uninitialised value(s)
==1267==    at 0x637C0F: implicitly_declare_fn(special_function_kind,
tree_node*, bool, tree_node*, tree_node*) (method.c:1623)
==1267==    by 0x6392DF: lazily_declare_fn(special_function_kind, tree_node*)
(method.c:1894)
==1267==    by 0x63FB74: lookup_fnfields_1(tree_node*, tree_node*)
(search.c:1441)
==1267==    by 0x63FD3B: lookup_fnfields_slot(tree_node*, tree_node*)
(search.c:1471)
==1267==    by 0x64367B: lookup_field_r(tree_node*, void*) (search.c:1031)
==1267==    by 0x6400CE: dfs_walk_all(tree_node*, tree_node* (*)(tree_node*,
void*), tree_node* (*)(tree_node*, void*), void*) (search.c:1572)
==1267==    by 0x6402E7: lookup_member(tree_node*, tree_node*, int, bool, int)
(search.c:1204)
==1267==    by 0x640640: lookup_fnfields(tree_node*, tree_node*, int)
(search.c:1295)
==1267==    by 0x4DF3B0: build_special_member_call(tree_node*, tree_node*,
vec<tree_node*, va_gc, vl_embed>**, tree_node*, int, int) (call.c:7282)
==1267==    by 0x4E0693: convert_like_real(conversion*, tree_node*, tree_node*,
int, int, bool, bool, int) (call.c:5718)
==1267==    by 0x4E1D91: build_over_call(z_candidate*, int, int) (call.c:6867)
==1267==    by 0x4DE229: build_new_method_call(tree_node*, tree_node*,
vec<tree_node*, va_gc, vl_embed>**, tree_node*, int, tree_node**, int)
(call.c:7668)
==1267== 

Looks like some booleans in implicitly_declare_fn should be initialised.