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re PR c/35748 (ICE with cast to invalid union)

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PR c/35748
	* c-typeck.c (build_c_cast): Skip invalid fields in unions.

	* gcc.dg/union-cast-4.c: New test.

From-SVN: r133737
This commit is contained in:
Volker Reichelt 2008-03-30 21:58:43 +00:00 • committed by Volker Reichelt
parent 23594c97b3
commit 39ffbac911
4 changed files with 21 additions and 2 deletions
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5
gcc/ChangeLog
View file

@ -1,3 +1,8 @@
2008-03-30 Volker Reichelt <v.reichelt@netcologne.de>
PR c/35748
* c-typeck.c (build_c_cast): Skip invalid fields in unions.
2008-03-30 H.J. Lu <hongjiu.lu@intel.com>
PR target/35757

5
gcc/c-typeck.c
View file

@ -3628,8 +3628,9 @@ build_c_cast (tree type, tree expr)
tree field;
for (field = TYPE_FIELDS (type); field; field = TREE_CHAIN (field))
if (comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (field)),
TYPE_MAIN_VARIANT (TREE_TYPE (value))))
if (TREE_TYPE (field) != error_mark_node
&& comptypes (TYPE_MAIN_VARIANT (TREE_TYPE (field)),
TYPE_MAIN_VARIANT (TREE_TYPE (value))))
break;
if (field)

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2008-03-30 Volker Reichelt <v.reichelt@netcologne.de>
PR c/35748
* gcc.dg/union-cast-4.c: New test.
2008-03-30 H.J. Lu <hongjiu.lu@intel.com>
PR target/35757

8
gcc/testsuite/gcc.dg/union-cast-4.c Normal file
View file

@ -0,0 +1,8 @@
/* PR c/35748 */
union U { void x[1]; }; /* { dg-error "array of voids" } */
void foo()
{
(union U)0; /* { dg-error "type not present" } */
}