[Bug target/65284] New: [5 Regression] ICE (segfault) on arm-linux-gnueabihf

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65284

            Bug ID: 65284
           Summary: [5 Regression] ICE (segfault) on arm-linux-gnueabihf
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org

r221115 on arm-linux-gnueabihf

$ g++ -std=c++11 -c -O2 schema-parser.ii 
schema-parser.ii: In member function 'Maybe<ParsedSchema>
ParsedSchema::findNested() const':
schema-parser.ii:45:21: internal compiler error: Segmentation fault
 Maybe<ParsedSchema> ParsedSchema::findNested() const {
                     ^
Please submit a full bug report,
with preprocessed source if appropriate.

$ gdb --args /usr/lib/gcc/arm-linux-gnueabihf/5/cc1plus -fpreprocessed
schema-parser.ii -quiet -dumpbase schema-parser.ii -march=armv7-a
-mfloat-abi=hard -mfpu=vfpv3-d16 -mthumb -mtls-dialect=gnu -auxbase
schema-parser -O2 -std=c++11 -version -fstack-protector-strong -Wformat
-Wformat-security -o /tmp/ccABpp5w.s

(gdb) bt
#0  0x00346d52 in maybe_canonicalize_mem_ref_addr(tree_node**) ()
#1  0x0034ee4c in fold_stmt_1(gimple_stmt_iterator*, bool, tree_node*
(*)(tree_node*)) ()
#2  0x0053bb56 in (anonymous namespace)::pass_forwprop::execute(function*) ()
#3  0x00434e5e in execute_one_pass(opt_pass*) ()
#4  0x00435148 in execute_pass_list_1(opt_pass*) [clone .constprop.59] ()
#5  0x00435152 in execute_pass_list_1(opt_pass*) [clone .constprop.59] ()
#6  0x00435180 in execute_pass_list(function*, opt_pass*) ()
#7  0x00298eb6 in cgraph_node::expand() ()
#8  0x0029a93c in symbol_table::compile() [clone .part.42] ()
#9  0x0029ab78 in symbol_table::finalize_compilation_unit() ()
#10 0x001a34e4 in cp_write_global_declarations() ()
#11 0x004aa082 in compile_file() ()
#12 0x001571a6 in toplev::main(int, char**) ()
#13 0x00157bf4 in main ()

$ cat schema-parser.ii
namespace _ {
template <typename T> class NullableValue {
public:
  T operator*();
  NullableValue(T);
};
}
template <typename T> class Maybe {
public:
  Maybe(T t) : ptr(t) {}
  template <typename Func> auto map(Func f) -> Maybe<decltype(f(T()))> {
    return f(*ptr);
  }
  _::NullableValue<T> ptr;
};
template <typename T> class A {
public:
  T *operator->();
};
typedef int uint64_t;
class B {
public:
  long getId();
};
class C {
  struct D;
  A<D> impl;
  friend class ParsedSchema;
};
class ParsedSchema {
  Maybe<ParsedSchema> findNested() const;
  ParsedSchema(ParsedSchema, C);
  C *parser;
  B getProto() const;
  int raw;
};
class F {
public:
  Maybe<uint64_t> lookup(uint64_t, int);
  ParsedSchema get(uint64_t);
};
struct C::D {
  F compiler;
};
Maybe<ParsedSchema> ParsedSchema::findNested() const {
  int name;
  parser->impl->compiler.lookup(getProto().getId(), name)
      .map([this](uint64_t childId) {
        return ParsedSchema(parser->impl->compiler.get(childId), *parser);
      });
}