It is used to get new index for extensible array [static] and returns a new index value to be used with member functions in the internal extensible array.
The internal extensible array is a general-purpose array of objects of type long (if accessed with member iword) or void* (if accessed with member pword).
DeclarationFollowing is the declaration for ios_base::xalloc function.
static int xalloc();Parameters
none
Return ValueA new index that can be used with either member iword or member pword.
ExceptionsStrong guarantee − if an exception is thrown, there are no changes in any stream.
Data racesConcurrently calling this function may introduce data races.
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