The contents of the header are the same as the C
standard library header
, with the following changes:
In lieu of the default argument promotions specified in ISO/IEC 9899:2024 6.5.2.2,
the definition in
[expr.call] applies
.The preprocessing tokens
comprising the second and subsequent arguments to
va_start (if any)
are discarded
. [
Note 1:
va_start accepts a second argument
for compatibility with prior revisions of C++
. —
end note]