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Make mapped_debug_names and mapped_index final 

When compiling with Clang 6, I see these warnings:

/home/emaisin/src/binutils-gdb/gdb/dwarf2read.c:25421:5: error: destructor called on non-final 'mapped_index' that has virtual functions but non-virtual destructor [-Werror,-Wdelete-non-virtual-dtor]
    data->index_table->~mapped_index ();
    ^
In file included from /home/emaisin/src/binutils-gdb/gdb/dwarf2read.c:31:
In file included from /home/emaisin/src/binutils-gdb/gdb/defs.h:28:
In file included from /home/emaisin/src/binutils-gdb/gdb/common/common-defs.h:92:
In file included from /home/emaisin/src/binutils-gdb/gdb/common/gdb_unique_ptr.h:23:
In file included from /usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/memory:81:
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/unique_ptr.h:76:2: error: delete called on non-final 'mapped_debug_names' that has virtual functions but non-virtual destructor [-Werror,-Wdelete-non-virtual-dtor]
        delete __ptr;
        ^
/usr/bin/../lib/gcc/x86_64-linux-gnu/5.4.0/../../../../include/c++/5.4.0/bits/unique_ptr.h:236:4: note: in instantiation of member function 'std::default_delete<mapped_debug_names>::operator()' requested here
          get_deleter()(__ptr);
          ^
/home/emaisin/src/binutils-gdb/gdb/dwarf2read.c:2374:21: note: in instantiation of member function 'std::unique_ptr<mapped_debug_names, std::default_delete<mapped_debug_names> >::~unique_ptr' requested here
dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_,
                    ^

This patch silences these warnings by making the classes final.

gdb/ChangeLog:

	* dwarf2read.c (struct mapped_debug_names): Make final.
	(struct mapped_index): Make final.
This commit is contained in:
Simon Marchi 2017-12-30 00:10:05 -05:00
parent 0436426c7f
commit fc898b42e3
2 changed files with 7 additions and 2 deletions
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5
gdb/ChangeLog
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@ -1,3 +1,8 @@
2017-12-30 Simon Marchi <simon.marchi@ericsson.com>
* dwarf2read.c (struct mapped_debug_names): Make final.
(struct mapped_index): Make final.
2017-12-29 Simon Marchi <simon.marchi@ericsson.com>
* common/diagnostics.h

4
gdb/dwarf2read.c
View File

@ -277,7 +277,7 @@ protected:
/* A description of the mapped index. The file format is described in
a comment by the code that writes the index. */
struct mapped_index : public mapped_index_base
struct mapped_index final : public mapped_index_base
{
/* A slot/bucket in the symbol table hash. */
struct symbol_table_slot
@ -318,7 +318,7 @@ struct mapped_index : public mapped_index_base
/* A description of the mapped .debug_names.
Uninitialized map has CU_COUNT 0. */
struct mapped_debug_names : public mapped_index_base
struct mapped_debug_names final : public mapped_index_base
{
bfd_endian dwarf5_byte_order;
bool dwarf5_is_dwarf64;