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re PR c/69669 (ICE with enum __attribute__((mode(QI))))

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PR c/69669
	* c-decl.c (finish_enum): When honoring mode attribute,
	make sure to use proper TYPE_MIN_VALUE and TYPE_MAX_VALUE.

	* c-c++-common/pr69669.c: New test.

From-SVN: r233154
This commit is contained in:
Jakub Jelinek 2016-02-04 23:17:05 +01:00 committed by Jakub Jelinek
parent 25f738f210
commit 1066e9b533
4 changed files with 40 additions and 12 deletions
gcc
c
ChangeLogc-decl.c
testsuite
ChangeLog
c-c++-common
pr69669.c

6
gcc/c/ChangeLog

@ -1,3 +1,9 @@
2016-02-04 Jakub Jelinek <jakub@redhat.com>
PR c/69669
* c-decl.c (finish_enum): When honoring mode attribute,
make sure to use proper TYPE_MIN_VALUE and TYPE_MAX_VALUE.
2016-01-29 Jakub Jelinek <jakub@redhat.com>
PR debug/69518

31
gcc/c/c-decl.c

@ -8037,7 +8037,24 @@ finish_enum (tree enumtype, tree values, tree attributes)
precision = MAX (tree_int_cst_min_precision (minnode, sign),
tree_int_cst_min_precision (maxnode, sign));
if (TYPE_PACKED (enumtype) || precision > TYPE_PRECISION (integer_type_node))
/* If the precision of the type was specified with an attribute and it
was too small, give an error. Otherwise, use it. */
if (TYPE_PRECISION (enumtype) && lookup_attribute ("mode", attributes))
{
if (precision > TYPE_PRECISION (enumtype))
{
TYPE_PRECISION (enumtype) = 0;
error ("specified mode too small for enumeral values");
}
else
precision = TYPE_PRECISION (enumtype);
}
else
TYPE_PRECISION (enumtype) = 0;
if (TYPE_PACKED (enumtype)
|| precision > TYPE_PRECISION (integer_type_node)
|| TYPE_PRECISION (enumtype))
{
tem = c_common_type_for_size (precision, sign == UNSIGNED ? 1 : 0);
if (tem == NULL)
@ -8054,17 +8071,7 @@ finish_enum (tree enumtype, tree values, tree attributes)
TYPE_UNSIGNED (enumtype) = TYPE_UNSIGNED (tem);
TYPE_ALIGN (enumtype) = TYPE_ALIGN (tem);
TYPE_SIZE (enumtype) = 0;
/* If the precision of the type was specified with an attribute and it
was too small, give an error. Otherwise, use it. */
if (TYPE_PRECISION (enumtype)
&& lookup_attribute ("mode", attributes))
{
if (precision > TYPE_PRECISION (enumtype))
error ("specified mode too small for enumeral values");
}
else
TYPE_PRECISION (enumtype) = TYPE_PRECISION (tem);
TYPE_PRECISION (enumtype) = TYPE_PRECISION (tem);
layout_type (enumtype);

5
gcc/testsuite/ChangeLog

@ -1,3 +1,8 @@
2016-02-04 Jakub Jelinek <jakub@redhat.com>
PR c/69669
* c-c++-common/pr69669.c: New test.
2016-02-04 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/69667

10
gcc/testsuite/c-c++-common/pr69669.c Normal file

@ -0,0 +1,10 @@
/* PR c/69669 */
/* { dg-do compile } */
enum __attribute__((mode(QI))) E { F = 1 };
void
foo (enum E *x, int y)
{
*x = (enum E) y;
}