Compiling the following invalid objc testcase results in an ICE:
============================
void foo()
{
struct A a;
a.i;
}
============================
bug1.m: In function 'foo':
bug1.m:3: error: storage size of 'a' isn't known
bug1.m:4: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in objc_is_public, at objc/objc-act.c:7171
Please submit a full bug report, [etc.]
The following patch fixes the problem for me, but hasn't been bootstrapped yet:
===================================================================
--- gcc/gcc/objc/objc-act.c (revision 113130)
+++ gcc/gcc/objc/objc-act.c (working copy)
@@ -7168,6 +7168,9 @@
return 1;
#endif
+ if (TREE_TYPE (expr) == error_mark_node)
+ return 1;
+
basetype = TYPE_MAIN_VARIANT (TREE_TYPE (expr));
if (basetype && TREE_CODE (basetype) == RECORD_TYPE)
===================================================================
--
Summary: [4.1/4.2 regression] ICE with invalid fields
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code, error-recovery
Severity: normal
Priority: P3
Component: objc
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27240
