The following invalid code snippet triggers an ICE in the C frontend since
at least GCC 2.95.3:
=============================
void foo(struct A a) {}
void foo() {}
=============================
bug.c:1: warning: 'struct A' declared inside parameter list
bug.c:1: warning: its scope is only this definition or declaration, which is
probably not what you want
bug.c:1: error: parameter 1 ('a') has incomplete type
bug.c:2: error: redefinition of 'foo'
bug.c:1: error: previous definition of 'foo' was here
bug.c: In function 'foo':
bug.c:2: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in store_parm_decls_oldstyle, at c-decl.c:6375
Please submit a full bug report, [etc.]
--
Summary: ICE with invalid function definitions
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code, error-recovery, monitored
Severity: normal
Priority: P3
Component: c
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=27953
