[Bug bootstrap/63204] New: gtype-desc.c:887:40: error: 'struct loop' has no member named 'former_header' breaks bootstrap

["mikpelinux at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63204

            Bug ID: 63204
           Summary: gtype-desc.c:887:40: error: 'struct loop' has no
                    member named 'former_header' breaks bootstrap
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
          Assignee: unassigned at gcc dot gnu.org
          Reporter: mikpelinux at gmail dot com

Attempting to bootstrap latest gcc-5 snapshot (20140907, aka r215005) fails
with:

g++ -c   -g -DIN_GCC    -fno-exceptions -fno-rtti -fasynchronous-unwind-tables
-W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wno-format
-Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H -I. -I.
-I/mnt/scratch/gcc-5-20140907/gcc -I/mnt/scratch/gcc-5-20140907/gcc/.
-I/mnt/scratch/gcc-5-20140907/gcc/../include
-I/mnt/scratch/gcc-5-20140907/gcc/../libcpp/include 
-I/mnt/scratch/gcc-5-20140907/gcc/../libdecnumber
-I/mnt/scratch/gcc-5-20140907/gcc/../libdecnumber/dpd -I../libdecnumber
-I/mnt/scratch/gcc-5-20140907/gcc/../libbacktrace    -o gtype-desc.o -MT
gtype-desc.o -MMD -MP -MF ./.deps/gtype-desc.TPo gtype-desc.c
In file included from /mnt/scratch/gcc-5-20140907/gcc/ggc.h:34:0,
                 from /mnt/scratch/gcc-5-20140907/gcc/hash-table.h:199,
                 from /mnt/scratch/gcc-5-20140907/gcc/hash-set.h:24,
                 from /mnt/scratch/gcc-5-20140907/gcc/tree-core.h:24,
                 from /mnt/scratch/gcc-5-20140907/gcc/tree.h:23,
                 from gtype-desc.c:30:
gtype-desc.c: In function 'void gt_ggc_mx_loop(void*)':
gtype-desc.c:887:40: error: 'struct loop' has no member named 'former_header'
       gt_ggc_m_15basic_block_def ((*x).former_header);
                                        ^
./gtype-desc.h:829:7: note: in definition of macro 'gt_ggc_m_15basic_block_def'
   if (X != NULL) gt_ggc_mx_basic_block_def (X);\
       ^
gtype-desc.c:887:40: error: 'struct loop' has no member named 'former_header'
       gt_ggc_m_15basic_block_def ((*x).former_header);
                                        ^
./gtype-desc.h:829:45: note: in definition of macro
'gt_ggc_m_15basic_block_def'
   if (X != NULL) gt_ggc_mx_basic_block_def (X);\
                                             ^
gtype-desc.c: In function 'void gt_pch_nx_loop(void*)':
gtype-desc.c:4070:40: error: 'struct loop' has no member named 'former_header'
       gt_pch_n_15basic_block_def ((*x).former_header);
                                        ^
./gtype-desc.h:1733:7: note: in definition of macro
'gt_pch_n_15basic_block_def'
   if (X != NULL) gt_pch_nx_basic_block_def (X);\
       ^
gtype-desc.c:4070:40: error: 'struct loop' has no member named 'former_header'
       gt_pch_n_15basic_block_def ((*x).former_header);
                                        ^
./gtype-desc.h:1733:45: note: in definition of macro
'gt_pch_n_15basic_block_def'
   if (X != NULL) gt_pch_nx_basic_block_def (X);\
                                             ^
gtype-desc.c: In function 'void gt_pch_p_4loop(void*, void*,
gt_pointer_operator, void*)':
gtype-desc.c:7312:16: error: 'struct loop' has no member named 'former_header'
     op (&((*x).former_header), cookie);
                ^
make[3]: *** [gtype-desc.o] Error 1
make[3]: Leaving directory `/mnt/scratch/objdir50/gcc'
make[2]: *** [all-stage1-gcc] Error 2
make[2]: Leaving directory `/mnt/scratch/objdir50'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/mnt/scratch/objdir50'
make: *** [bootstrap] Error 2

So far I've gotten this both on armv5tel-linux-gnueabi and x86_64-pc-linux-gnu.

This is a regression from last week's snapshot.