Compiling the following testcase with "g++ -fmudflap" yields
an ICE since GCC 4.0.0 (i.e. this is not a regression):
=================
struct A;
A foo()
{
A a;
return a;
}
=================
bug.cc: In function 'A foo()':
bug.cc:3: error: return type 'struct A' is incomplete
bug.cc:5: error: aggregate 'A a' has incomplete type and cannot be defined
bug.cc:3: internal compiler error: tree check: expected class 'type', have
'exceptional' (error_mark) in mf_xform_derefs_1, at tree-mudflap.c:731
Please submit a full bug report, [etc.]
Testing a patch.
--
Summary: ICE with -fmudflap returning an incomplete struct
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code, 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=26790
