Downloading the code at
http://www.pci.unizh.ch/vandevondele/tmp/all_cp2k_gfortran.f90.gz,
uncompressing it and compiling it with mainline GCC on x86_64-linux at -O2 -g
gives:
Program received signal SIGSEGV, Segmentation fault.
0x000000000053f99d in gt_ggc_mx_dw_loc_descr_struct (x_p=0x2aaae3061fa0)
at ./gt-dwarf2out.h:214
warning: Source file is more recent than executable.
214 if (ggc_test_and_set_mark (x))
(gdb) p x
$1 = (struct dw_loc_descr_struct * const) 0x2aaae3061fa0
(gdb) p *x
$2 = {dw_loc_next = 0x0, dw_loc_opc = DW_OP_ne, dw_loc_oprnd1 = {
val_class = dw_val_class_unsigned_const, v = {val_addr = 0x0,
val_offset = 0, val_loc_list = 0x0, val_loc = 0x0, val_int = 0,
val_unsigned = 0, val_long_long = {hi = 0, low = 0}, val_vec = {
array = 0x0, length = 0, elt_size = 0}, val_die_ref = {die = 0x0,
external = 0}, val_fde_index = 0, val_str = 0x0, val_lbl_id = 0x0,
val_flag = 0 '\0', val_file = 0x0}}, dw_loc_oprnd2 = {
val_class = dw_val_class_unsigned_const, v = {val_addr = 0x0,
val_offset = 0, val_loc_list = 0x0, val_loc = 0x0, val_int = 0,
val_unsigned = 0, val_long_long = {hi = 0, low = 0}, val_vec = {
array = 0x0, length = 0, elt_size = 0}, val_die_ref = {die = 0x0,
external = 0}, val_fde_index = 0, val_str = 0x0, val_lbl_id = 0x0,
val_flag = 0 '\0', val_file = 0x0}}, dw_loc_addr = 0}
(gdb) bt
#0 0x000000000053f99d in gt_ggc_mx_dw_loc_descr_struct (x_p=0x2aaae3061fa0)
at ./gt-dwarf2out.h:214
#1 0x000000000053f9b5 in gt_ggc_mx_dw_loc_descr_struct (x_p=0x2aaae3061f50)
at ./gt-dwarf2out.h:216
#2 0x000000000053f9b5 in gt_ggc_mx_dw_loc_descr_struct (x_p=0x2aaae3061f00)
at ./gt-dwarf2out.h:216
#3 0x000000000053f9b5 in gt_ggc_mx_dw_loc_descr_struct (x_p=0x2aaae3061eb0)
at ./gt-dwarf2out.h:216
#4 0x000000000053fd03 in gt_ggc_mx_VEC_dw_attr_node_gc (
x_p=<value optimized out>) at ./gt-dwarf2out.h:96
#5 0x000000000053fd4d in gt_ggc_mx_die_struct (x_p=0x2aaae305c8a0)
at ./gt-dwarf2out.h:361
#6 0x000000000047ed4d in gt_ggc_mx_lang_tree_node (x_p=<value optimized out>)
at ./gt-fortran-f95-lang.h:325
#7 0x000000000047e9db in gt_ggc_mx_lang_tree_node (x_p=<value optimized out>)
at ./gt-fortran-f95-lang.h:333
The exact command-line used is "./f951 -fmem-report all_cp2k_gfortran.f90 -O2
-g". Probably a middle-end or garbage collection issue as it goes fine with
-O0.
I'm not sure whether this passes for GCC 4.3.0, but I know it used to pass
before 4.4 was branched off.
--
Summary: [4.4 regression] segfault in
gt_ggc_mx_dw_loc_descr_struct
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: fxcoudert at gcc dot gnu dot org
GCC build triplet: x86_64-unknown-linux-gnu
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36037
