Red Hat Bugzilla – Bug 59395
Internal compiler error in tree_low_cst at tree.c 4325
Last modified: 2008-05-01 11:38:01 EDT
Description of Problem:
The version of linux being used is 2.4.7-10smp.
gcc3 and gcc generate an internal compiler error for a class definition which
includes nested structures and classes. I have included the source files
needed for compilation. Please copy them and run gcc.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Copy pasted files r.h, oops_rt.h and r.cpp
2. g++ -g r.cpp -I. -o r.o
In file included from r.cpp:26:
r.h:6282: Internal compiler error in tree_low_cst, at tree.c:4325
Please submit a full bug report.
See <URL:http://bugzilla.redhat.com/bugzilla/> for instructions.
Please find attached files oops_rt.h, r.h and r.cpp
Created attachment 44777 [details]
common header file oops_rt.h
Created attachment 44778 [details]
Created attachment 44779 [details]
I agree gcc should not ICE on this.
Simplified testcase is:
struct B : public A
The problem is that some C++ class layout routines store temporarily structure sizes
in HOST_WIDE_INT integer variables (this is normally 32-bit on IA-32) and the
structure sizes are in bits, so the above means gcc cannot fit the structure
size into signed 32-bit integer.
Quick workaround is to recompile gcc so that it will use
-DHOST_WIDE_INT=long\ long -DHOST_BITS_PER_WIDE_INT=64
(or, even better, don't build such huge classes).
Verified ok in g++ 3.2