This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 114a. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2024-04-18
It is not clear whether the following declaration is well-formed:
struct S { int i; } s = { { 1 } };
According to 9.4.2 [dcl.init.aggr]
paragraph 2, a brace-enclosed initializer is permitted for a
subaggregate of an aggregate; however, i is a scalar, not an
aggregate. 9.4 [dcl.init] paragraph 13
says that a standalone declaration like
int i = { 1 };
is permitted, but it is not clear whether this says anything about the
form of initializers for scalar members of aggregates.
This is (more) clearly permitted by the C89 Standard.
Rationale (May, 2008):
Issue 632 refers to exactly the same question and has a more detailed discussion of the considerations involved.