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glynosglynos
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Merge pull request #100 from glynos/boost_function_fix_for_gcc6
Applied fix suggested by ddurham2 to allow compilation using GCC 6.
2 parents b91cacc + 45df6f7 commit 6b11fa0

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‎src/boost/function/function_base.hpp

Lines changed: 37 additions & 34 deletions
Original file line numberDiff line numberDiff line change
@@ -41,7 +41,7 @@
4141
# pragma warning( push )
4242
# pragma warning( disable : 4793 ) // complaint about native code generation
4343
# pragma warning( disable : 4127 ) // "conditional expression is constant"
44-
#endif
44+
#endif
4545

4646
// Define BOOST_FUNCTION_STD_NS to the namespace that contains type_info.
4747
#ifdef BOOST_NO_STD_TYPEINFO
@@ -120,8 +120,11 @@ namespace network_boost {
120120
bool is_volatile_qualified;
121121
} obj_ref;
122122

123-
// To relax aliasing constraints
124-
mutable char data;
123+
// To relax aliasing constraints (HACK - I'm making data at
124+
// least as big as the things above to avoid a placement-new
125+
// error we're getting with gcc6. Not sure if that makes this
126+
// comment now irrelevant)
127+
mutable char data[sizeof(bound_memfunc_ptr_t)];
125128
};
126129

127130
/**
@@ -188,11 +191,11 @@ namespace network_boost {
188191
struct reference_manager
189192
{
190193
static inline void
191-
manage(const function_buffer& in_buffer, function_buffer& out_buffer,
194+
manage(const function_buffer& in_buffer, function_buffer& out_buffer,
192195
functor_manager_operation_type op)
193196
{
194197
switch (op) {
195-
case clone_functor_tag:
198+
case clone_functor_tag:
196199
out_buffer.obj_ref = in_buffer.obj_ref;
197200
return;
198201

@@ -207,13 +210,13 @@ namespace network_boost {
207210

208211
case check_functor_type_tag:
209212
{
210-
const detail::sp_typeinfo& check_type
213+
const detail::sp_typeinfo& check_type
211214
= *out_buffer.type.type;
212215

213216
// Check whether we have the same type. We can add
214217
// cv-qualifiers, but we can't take them away.
215218
if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(F))
216-
&& (!in_buffer.obj_ref.is_const_qualified
219+
&& (!in_buffer.obj_ref.is_const_qualified
217220
|| out_buffer.type.const_qualified)
218221
&& (!in_buffer.obj_ref.is_volatile_qualified
219222
|| out_buffer.type.volatile_qualified))
@@ -240,9 +243,9 @@ namespace network_boost {
240243
struct function_allows_small_object_optimization
241244
{
242245
BOOST_STATIC_CONSTANT
243-
(bool,
246+
(bool,
244247
value = ((sizeof(F) <= sizeof(function_buffer) &&
245-
(alignment_of<function_buffer>::value
248+
(alignment_of<function_buffer>::value
246249
% alignment_of<F>::value == 0))));
247250
};
248251

@@ -254,7 +257,7 @@ namespace network_boost {
254257
A(a)
255258
{
256259
}
257-
260+
258261
functor_wrapper(const functor_wrapper& f) :
259262
F(static_cast<const F&>(f)),
260263
A(static_cast<const A&>(f))
@@ -273,7 +276,7 @@ namespace network_boost {
273276

274277
// Function pointers
275278
static inline void
276-
manage_ptr(const function_buffer& in_buffer, function_buffer& out_buffer,
279+
manage_ptr(const function_buffer& in_buffer, function_buffer& out_buffer,
277280
functor_manager_operation_type op)
278281
{
279282
if (op == clone_functor_tag)
@@ -299,11 +302,11 @@ namespace network_boost {
299302

300303
// Function objects that fit in the small-object buffer.
301304
static inline void
302-
manage_small(const function_buffer& in_buffer, function_buffer& out_buffer,
305+
manage_small(const function_buffer& in_buffer, function_buffer& out_buffer,
303306
functor_manager_operation_type op)
304307
{
305308
if (op == clone_functor_tag || op == move_functor_tag) {
306-
const functor_type* in_functor =
309+
const functor_type* in_functor =
307310
reinterpret_cast<const functor_type*>(&in_buffer.data);
308311
new (reinterpret_cast<void*>(&out_buffer.data)) functor_type(*in_functor);
309312

@@ -318,7 +321,7 @@ namespace network_boost {
318321
(void)f; // suppress warning about the value of f not being used (MSVC)
319322
f->~Functor();
320323
} else if (op == check_functor_type_tag) {
321-
const detail::sp_typeinfo& check_type
324+
const detail::sp_typeinfo& check_type
322325
= *out_buffer.type.type;
323326
if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor)))
324327
out_buffer.obj_ptr = &in_buffer.data;
@@ -327,7 +330,7 @@ namespace network_boost {
327330
} else /* op == get_functor_type_tag */ {
328331
out_buffer.type.type = &BOOST_SP_TYPEID(Functor);
329332
out_buffer.type.const_qualified = false;
330-
out_buffer.type.volatile_qualified = false;
333+
out_buffer.type.volatile_qualified = false;
331334
}
332335
}
333336
};
@@ -340,23 +343,23 @@ namespace network_boost {
340343

341344
// Function pointers
342345
static inline void
343-
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
346+
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
344347
functor_manager_operation_type op, function_ptr_tag)
345348
{
346349
functor_manager_common<Functor>::manage_ptr(in_buffer,out_buffer,op);
347350
}
348351

349352
// Function objects that fit in the small-object buffer.
350353
static inline void
351-
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
354+
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
352355
functor_manager_operation_type op, mpl::true_)
353356
{
354357
functor_manager_common<Functor>::manage_small(in_buffer,out_buffer,op);
355358
}
356-
359+
357360
// Function objects that require heap allocation
358361
static inline void
359-
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
362+
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
360363
functor_manager_operation_type op, mpl::false_)
361364
{
362365
if (op == clone_functor_tag) {
@@ -396,7 +399,7 @@ namespace network_boost {
396399
// object can use the small-object optimization buffer or
397400
// whether we need to allocate it on the heap.
398401
static inline void
399-
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
402+
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
400403
functor_manager_operation_type op, function_obj_tag)
401404
{
402405
manager(in_buffer, out_buffer, op,
@@ -405,7 +408,7 @@ namespace network_boost {
405408

406409
// For member pointers, we use the small-object optimization buffer.
407410
static inline void
408-
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
411+
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
409412
functor_manager_operation_type op, member_ptr_tag)
410413
{
411414
manager(in_buffer, out_buffer, op, mpl::true_());
@@ -415,7 +418,7 @@ namespace network_boost {
415418
/* Dispatch to an appropriate manager based on whether we have a
416419
function pointer or a function object pointer. */
417420
static inline void
418-
manage(const function_buffer& in_buffer, function_buffer& out_buffer,
421+
manage(const function_buffer& in_buffer, function_buffer& out_buffer,
419422
functor_manager_operation_type op)
420423
{
421424
typedef typename get_function_tag<functor_type>::type tag_type;
@@ -441,23 +444,23 @@ namespace network_boost {
441444

442445
// Function pointers
443446
static inline void
444-
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
447+
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
445448
functor_manager_operation_type op, function_ptr_tag)
446449
{
447450
functor_manager_common<Functor>::manage_ptr(in_buffer,out_buffer,op);
448451
}
449452

450453
// Function objects that fit in the small-object buffer.
451454
static inline void
452-
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
455+
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
453456
functor_manager_operation_type op, mpl::true_)
454457
{
455458
functor_manager_common<Functor>::manage_small(in_buffer,out_buffer,op);
456459
}
457-
460+
458461
// Function objects that require heap allocation
459462
static inline void
460-
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
463+
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
461464
functor_manager_operation_type op, mpl::false_)
462465
{
463466
typedef functor_wrapper<Functor,Allocator> functor_wrapper_type;
@@ -490,7 +493,7 @@ namespace network_boost {
490493
wrapper_allocator.deallocate(victim,1);
491494
out_buffer.obj_ptr = 0;
492495
} else if (op == check_functor_type_tag) {
493-
const detail::sp_typeinfo& check_type
496+
const detail::sp_typeinfo& check_type
494497
= *out_buffer.type.type;
495498
if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor)))
496499
out_buffer.obj_ptr = in_buffer.obj_ptr;
@@ -507,7 +510,7 @@ namespace network_boost {
507510
// object can use the small-object optimization buffer or
508511
// whether we need to allocate it on the heap.
509512
static inline void
510-
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
513+
manager(const function_buffer& in_buffer, function_buffer& out_buffer,
511514
functor_manager_operation_type op, function_obj_tag)
512515
{
513516
manager(in_buffer, out_buffer, op,
@@ -518,7 +521,7 @@ namespace network_boost {
518521
/* Dispatch to an appropriate manager based on whether we have a
519522
function pointer or a function object pointer. */
520523
static inline void
521-
manage(const function_buffer& in_buffer, function_buffer& out_buffer,
524+
manage(const function_buffer& in_buffer, function_buffer& out_buffer,
522525
functor_manager_operation_type op)
523526
{
524527
typedef typename get_function_tag<functor_type>::type tag_type;
@@ -604,8 +607,8 @@ namespace network_boost {
604607
*/
605608
struct vtable_base
606609
{
607-
void (*manager)(const function_buffer& in_buffer,
608-
function_buffer& out_buffer,
610+
void (*manager)(const function_buffer& in_buffer,
611+
function_buffer& out_buffer,
609612
functor_manager_operation_type op);
610613
};
611614
} // end namespace function
@@ -645,7 +648,7 @@ class function_base
645648
type_result.type.type = &BOOST_SP_TYPEID(Functor);
646649
type_result.type.const_qualified = is_const<Functor>::value;
647650
type_result.type.volatile_qualified = is_volatile<Functor>::value;
648-
get_vtable()->manager(functor, type_result,
651+
get_vtable()->manager(functor, type_result,
649652
detail::function::check_functor_type_tag);
650653
return static_cast<Functor*>(type_result.obj_ptr);
651654
}
@@ -659,7 +662,7 @@ class function_base
659662
type_result.type.type = &BOOST_SP_TYPEID(Functor);
660663
type_result.type.const_qualified = true;
661664
type_result.type.volatile_qualified = is_volatile<Functor>::value;
662-
get_vtable()->manager(functor, type_result,
665+
get_vtable()->manager(functor, type_result,
663666
detail::function::check_functor_type_tag);
664667
// GCC 2.95.3 gets the CV qualifiers wrong here, so we
665668
// can't do the static_cast that we should do.
@@ -887,6 +890,6 @@ namespace detail {
887890

888891
#if defined(BOOST_MSVC)
889892
# pragma warning( pop )
890-
#endif
893+
#endif
891894

892895
#endif // BOOST_FUNCTION_BASE_HEADER

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