At revision 161606, bootstrap fails with:
...
/opt/gcc/build_w/./prev-gcc/xgcc -B/opt/gcc/build_w/./prev-gcc/
-B/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/bin/
-B/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/bin/
-B/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/lib/ -isystem
/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/include -isystem
/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/sys-include -c -g -O2 -gtoggle
-DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -Wold-style-definition
-Wc++-compat -fno-common -DHAVE_CONFIG_H -I. -I. -I../../work/gcc
-I../../work/gcc/. -I../../work/gcc/../include
-I../../work/gcc/../libcpp/include -I/opt/sw64/include
-I../../work/gcc/../libdecnumber -I../../work/gcc/../libdecnumber/dpd
-I../libdecnumber -I/opt/sw64/include -DCLOOG_PPL_BACKEND
-I/opt/sw64/include ../../work/gcc/graphite-sese-to-poly.c -o
graphite-sese-to-poly.o
/opt/gcc/build_w/./prev-gcc/xgcc -B/opt/gcc/build_w/./prev-gcc/
-B/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/bin/
-B/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/bin/
-B/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/lib/ -isystem
/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/include -isystem
/opt/gcc/gcc4.6w/x86_64-apple-darwin10.4.0/sys-include -c -g -O2 -gtoggle
-DIN_GCC -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes
-Wmissing-prototypes -Wmissing-format-attribute -pedantic -Wno-long-long
-Wno-variadic-macros -Wno-overlength-strings -Werror -Wold-style-definition
-Wc++-compat -fno-common -DHAVE_CONFIG_H -I. -I. -I../../work/gcc
-I../../work/gcc/. -I../../work/gcc/../include
-I../../work/gcc/../libcpp/include -I/opt/sw64/include
-I../../work/gcc/../libdecnumber -I../../work/gcc/../libdecnumber/dpd
-I../libdecnumber -I/opt/sw64/include -DCLOOG_PPL_BACKEND
-I/opt/sw64/include gtype-desc.c -o gtype-desc.o
../../work/gcc/graphite-sese-to-poly.c: In function 'build_scop_drs.isra.110':
../../work/gcc/graphite-sese-to-poly.c:1784:15: error: 'dr_base_object_set' may
be used uninitialized in this function [-Werror=uninitialized]
../../work/gcc/graphite-sese-to-poly.c:1765:7: note: 'dr_base_object_set' was
declared here
../../work/gcc/graphite-sese-to-poly.c:2008:25: error: 'bap' may be used
uninitialized in this function [-Werror=uninitialized]
../../work/gcc/graphite-sese-to-poly.c:2003:24: note: 'bap' was declared here
../../work/gcc/graphite-sese-to-poly.c:1929:22: error: 'bap' may be used
uninitialized in this function [-Werror=uninitialized]
../../work/gcc/graphite-sese-to-poly.c:1924:24: note: 'bap' was declared here
cc1: all warnings being treated as errors
I have reached stage 3 with the following uneducated patch:
--- /opt/gcc/_clean/gcc/graphite-sese-to-poly.c 2010-06-10 00:11:15.000000000
+0200
+++ /opt/gcc/work/gcc/graphite-sese-to-poly.c 2010-06-30 17:18:25.000000000
+0200
@@ -1762,7 +1762,7 @@ build_poly_dr (data_reference_p dr, poly
ppl_Pointset_Powerset_C_Polyhedron_t accesses_ps;
ppl_dimension_type dom_nb_dims;
ppl_dimension_type accessp_nb_dims;
- int dr_base_object_set;
+ int dr_base_object_set = 0;
ppl_Pointset_Powerset_C_Polyhedron_space_dimension (PBB_DOMAIN (pbb),
&dom_nb_dims);
@@ -1921,7 +1921,7 @@ build_alias_set_optimal_p (VEC (data_ref
for (i = 0; i < g->n_vertices; i++)
{
data_reference_p dr = VEC_index (data_reference_p, drs, i);
- base_alias_pair *bap;
+ base_alias_pair *bap = NULL;
if (dr->aux)
bap = (base_alias_pair *)(dr->aux);
@@ -2000,7 +2000,7 @@ build_base_obj_set_for_drs (VEC (data_re
for (i = 0; i < g->n_vertices; i++)
{
data_reference_p dr = VEC_index (data_reference_p, drs, i);
- base_alias_pair *bap;
+ base_alias_pair *bap = NULL;
if (dr->aux)
bap = (base_alias_pair *)(dr->aux);
--
Summary: [4.6 Regression] Yet another broken bootstrap
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: bootstrap
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: dominiq at lps dot ens dot fr
GCC build triplet: x86_64-apple-darwin10.4.0
GCC host triplet: x86_64-apple-darwin10.4.0
GCC target triplet: x86_64-apple-darwin10.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44726
