tmp/tmpt6vby541/{from.md → to.md}
RENAMED
|
@@ -0,0 +1,25 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 1 |
+
### Replaceable function definitions <a id="dcl.fct.def.replace">[[dcl.fct.def.replace]]</a>
|
| 2 |
+
|
| 3 |
+
Certain functions for which a definition is supplied by the
|
| 4 |
+
implementation are *replaceable*. A C++ program may provide a definition
|
| 5 |
+
with the signature of a replaceable function, called a
|
| 6 |
+
*replacement function*. The replacement function is used instead of the
|
| 7 |
+
default version supplied by the implementation. Such replacement occurs
|
| 8 |
+
prior to program startup [[basic.def.odr]], [[basic.start]]. A
|
| 9 |
+
declaration of the replacement function
|
| 10 |
+
|
| 11 |
+
- shall not be inline,
|
| 12 |
+
- shall be attached to the global module,
|
| 13 |
+
- shall have C++ language linkage,
|
| 14 |
+
- shall have the same return type as the replaceable function, and
|
| 15 |
+
- if the function is declared in a standard library header, shall be
|
| 16 |
+
such that it would be valid as a redeclaration of the declaration in
|
| 17 |
+
that header;
|
| 18 |
+
|
| 19 |
+
no diagnostic is required.
|
| 20 |
+
|
| 21 |
+
[*Note 1*: The one-definition rule [[basic.def.odr]] applies to the
|
| 22 |
+
definitions of a replaceable function provided by the program. The
|
| 23 |
+
implementation-supplied function definition is an otherwise-unnamed
|
| 24 |
+
function with no linkage. — *end note*]
|
| 25 |
+
|