gfc_array_range_type being garbage collected?

[Asher Langton]

Hi,

I've come across a strange bug while preparing the Cray pointer patch 
for release.  In a large test program, I get an ICE due to 
gfc_array_range_type being overwritten prior to being used in 
gfc_get_array_type_bounds.  This only happens with a sufficiently 
large program, and it appears that gfc_array_range_type is being 
garbage collected:

Hardware watchpoint 6: *1073909760
(gdb) cont
  MAIN__ loctest ptrparms pteparm1 ptr1 ptr2 ptr3 ptr4 ptr5 ptr6 {GC 
5429k -> Hardware watchpoint 6: *1073909760

Old value = 0
New value = -1515870811
0x001d9c77 in memset () from /lib/tls/libc.so.6

This happens while translating a Cray pointee, but I don't think it's 
related; the same subroutine compiles and runs fine in a smaller 
program.  Does anybody have an idea what could be happening?



-Asher