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re PR c/25559 (Internal compiler error when specifying vector_size(2) of int)

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PR c/25559
	* c-common.c (handle_vector_size_attribute): Reject zero vector size
	as well as sizes not multiple of component size.

	* gcc.dg/pr25559.c: New test.

From-SVN: r109316
This commit is contained in:
Jakub Jelinek 2006-01-04 09:07:09 +01:00 committed by Jakub Jelinek
parent 434eba35c0
commit ee8960e558
4 changed files with 31 additions and 0 deletions

4
gcc/ChangeLog

@ -1,5 +1,9 @@
2006-01-04 Jakub Jelinek <jakub@redhat.com>
PR c/25559
* c-common.c (handle_vector_size_attribute): Reject zero vector size
as well as sizes not multiple of component size.
PR debug/25562
* function.c (instantiate_expr): New function.
(instantiate_decls_1, instantiate_decls): If DECL_HAS_VALUE_EXPR_P,

12
gcc/c-common.c

@ -5199,6 +5199,18 @@ handle_vector_size_attribute (tree *node, tree name, tree args,
return NULL_TREE;
}
if (vecsize % tree_low_cst (TYPE_SIZE_UNIT (type), 1))
{
error ("vector size not an integral multiple of component size");
return NULL;
}
if (vecsize == 0)
{
error ("zero vector size");
return NULL;
}
/* Calculate how many units fit in the vector. */
nunits = vecsize / tree_low_cst (TYPE_SIZE_UNIT (type), 1);
if (nunits & (nunits - 1))

5
gcc/testsuite/ChangeLog

@ -1,3 +1,8 @@
2006-01-04 Jakub Jelinek <jakub@redhat.com>
PR c/25559
* gcc.dg/pr25559.c: New test.
2006-01-03 Mark Mitchell <mark@codesourcery.com>
PR c++/25492

10
gcc/testsuite/gcc.dg/pr25559.c Normal file

@ -0,0 +1,10 @@
/* PR c/25559 */
/* { dg-do compile } */
#define vs(n) __attribute__((vector_size (n)))
int vs (-1) a; /* { dg-warning "attribute ignored" } */
int vs (0) b; /* { dg-error "zero vector size" } */
int vs (1) c; /* { dg-error "multiple of component size" } */
int vs (sizeof (int) / 2) d; /* { dg-error "multiple of component size" } */
int vs (sizeof (int)) e;
int vs (sizeof (int) * 2) f;