[Bug debug/36060] New: [4.3/4.4 Regression] Too big stack requirements of cc1plus during GC

["jakub at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

On the attached testcase on powerpc64-linux (native, 64-bit cc1plus)
compiling with -O2 -g -w -m64 -mminimal-toc -fPIC results in ICE during garbage
collection.  I've tracked that to excessively deep backtrace when marking
dwarf2 debug info, above 94000 calls in the backtrace, out of this
80462 calls to gt_ggc_mx_die_struct and 14232 gt_ggc_mx_VEC_dw_attr_node_gc
calls.  If I bump the ulimit -s to 14000 it already compiles, with 13500 it
still ICEs.  On ppc64 it is perhaps more visible as each frame takes
128 bytes, so e.g. I don't get ICE with the default ulimit -s 10240 with
x86_64-linux -> powerpc64-linux cross, still the stack usage is massive.


-- 
           Summary: [4.3/4.4 Regression] Too big stack requirements of
                    cc1plus during GC
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: debug
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jakub at gcc dot gnu dot org
GCC target triplet: powerpc64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36060