Silence GCC 9 error about deprecated implicit copy constructor.

Replacing push_back() with emplace_back() eliminates the calls to the
copy constructor, but I still had to provide explicit copy constructors
because of the call to vector::reserve(), which tries to instantiate them
even though they'll never actually be called when reserve() is called
on an empty vector.

gold/
	* incremental.cc (Sized_incremental_binary::setup_readers): Use
	emplace_back for GCC 5 and later.
	* incremental.h (Incremental_binary::Input_reader): Provide copy
	constructor.
	(Sized_incremental_binary::Sized_input_reader): Likewise.
This commit is contained in:
Cary Coutant 2018-06-22 18:19:51 -07:00
parent 2e7a29d570
commit a1893a821c
3 changed files with 19 additions and 0 deletions

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@ -1,3 +1,11 @@
2018-06-22 Cary Coutant <ccoutant@gmail.com>
* incremental.cc (Sized_incremental_binary::setup_readers): Use
emplace_back for GCC 5 and later.
* incremental.h (Incremental_binary::Input_reader): Provide copy
constructor.
(Sized_incremental_binary::Sized_input_reader): Likewise.
2018-06-22 Cary Coutant <ccoutant@gmail.com>
PR gold/22914

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@ -311,7 +311,11 @@ Sized_incremental_binary<size, big_endian>::setup_readers()
for (unsigned int i = 0; i < count; i++)
{
Input_entry_reader input_file = inputs.input_file(i);
#if defined(__GNUC__) && __GNUC__ < 5
this->input_entry_readers_.push_back(Sized_input_reader(input_file));
#else
this->input_entry_readers_.emplace_back(input_file);
#endif
switch (input_file.type())
{
case INCREMENTAL_INPUT_OBJECT:

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@ -1368,6 +1368,9 @@ class Incremental_binary
Input_reader()
{ }
Input_reader(const Input_reader&)
{ }
virtual
~Input_reader()
{ }
@ -1708,6 +1711,10 @@ class Sized_incremental_binary : public Incremental_binary
: Input_reader(), reader_(r)
{ }
Sized_input_reader(const Sized_input_reader& r)
: Input_reader(), reader_(r.reader_)
{ }
virtual
~Sized_input_reader()
{ }