gnu /
gcc /
c890c9650f3c4b1be1f39eabb74b438c033a8c08 PR c++/92745 - bogus error when initializing array of vectors.
In r268428 I changed reshape_init_r in such a way that when it sees
a nested { } in a CONSTRUCTOR with missing braces, it just returns
the initializer:
+ else if (COMPOUND_LITERAL_P (stripped_init)
...
+ ++d->cur;
+ gcc_assert (!BRACE_ENCLOSED_INITIALIZER_P (stripped_init));
+ return init;
But as this test shows, that's incorrect: if TYPE is an array, we need
to proceed to reshape_init_array_1 which will iterate over the array
initializers:
6006 /* Loop until there are no more initializers. */
6007 for (index = 0;
6008 d->cur != d->end && (!sized_array_p || index <= max_index_cst);
6009 ++index)
6010 {
and update d.cur accordingly. In other words, when reshape_init gets
{{col[0][0], col[1][0], col[2][0], col[3][0]},
{col[0][1], col[1][1], col[2][1], col[3][1]},
{col[0][2], col[1][2], col[2][2], col[3][2]},
{col[0][3], col[1][3], col[2][3], col[3][3]}}
we recurse on the first element:
{col[0][0], col[1][0], col[2][0], col[3][0]}
and we can't just move d.cur to point to
{col[0][1], col[1][1], col[2][1], col[3][1]}
and return; we need to iterate, so that d.cur ends up being properly
updated, and after all initializers have been seen, points to d.end.
Currently we skip the loop, wherefore we hit this:
6502 /* Make sure all the element of the constructor were used. Otherwise,
6503 issue an error about exceeding initializers. */
6504 if (d.cur != d.end)
6505 {
6506 if (complain & tf_error)
6507 error ("too many initializers for %qT", type);
6508 return error_mark_node;
6509 }
gcc/cp/ChangeLog
2019-12-19 Marek Polacek <polacek@redhat.com>
PR c++/92745 - bogus error when initializing array of vectors.
* decl.c (reshape_init_r): For a nested compound literal, do
call reshape_init_{class,array,vector}.
gcc/testsuite/ChangeLog
2019-12-19 Marek Polacek <polacek@redhat.com>
Jakub Jelinek <jakub@redhat.com>
PR c++/92745 - bogus error when initializing array of vectors.
* g++.dg/cpp0x/initlist118.C: New test.
* g++.dg/cpp0x/initlist118.C: Add -Wno-psabi -w to dg-options.
4 files changed
