https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85401
Bug ID: 85401
Summary: segfault building code for VAX
Product: gcc
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: coypu at sdf dot org
Target Milestone: ---
Created attachment 43929
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43929&action=edit
Reproduce test
build with the following flags fails:
-O2 -fno-pic -c ip_icmp.i
here is a backtrace, from trunk as of April 14 2018.
Starting program: /home/fly/gcc/build/gcc/cc1 -fpreprocessed ip_icmp.i -quiet
-dumpbase ip_icmp.i -auxbase ip_icmp -O2 -fno-pic -o /var/tmp//ccO5AxRb.s
In file included from ../../../../sys/timevar.h:66,
from ../../../../sys/time.h:307,
from ../../../../sys/param.h:145,
from ../../../../netinet/ip_icmp.c:103:
../../../../sys/systm.h:225:6: warning: conflicting types for built-in function
'printf' [-Wbuiltin-declaration-mismatch]
../../../../sys/systm.h:229:6: warning: conflicting types for built-in function
'vprintf' [-Wbuiltin-declaration-mismatch]
In file included from ../../../../netinet/ip_icmp.c:112:
../../../../sys/syslog.h:233:6: warning: conflicting types for built-in
function 'log' [-Wbuiltin-declaration-mismatch]
Program received signal SIGSEGV, Segmentation fault.
0x0000000000bfd868 in allocno_copy_cost_saving (allocno=0x7e3c3e791190,
hard_regno=11) at ../../gcc/ira-color.c:2832
2832 cost += cp->freq *
ira_register_move_cost[allocno_mode][rclass][rclass];
1: rclass = ALL_REGS
2: allocno_mode = E_QImode
3: ira_register_move_cost[allocno_mode][rclass][rclass] = <error: Cannot access
memory at address 0x6>
4: cp->freq = 36
5: ira_register_move_cost = {0x0, 0x0, 0x0, 0x0, 0x0, 0x7e3c3ed98850,
0x7e3c3ed98850, 0x0 <repeats 32 times>}
(gdb) bt full
#0 0x0000000000bfd868 in allocno_copy_cost_saving (allocno=0x7e3c3e791190,
hard_regno=11) at ../../gcc/ira-color.c:2832
cost = 0
allocno_mode = E_QImode
rclass = ALL_REGS
cp = 0x7e3c3e511380
next_cp = 0x0
__FUNCTION__ = "allocno_copy_cost_saving"
#1 0x0000000000bfdbb9 in improve_allocation () at ../../gcc/ira-color.c:2905
i = 2
j = 11
k = 11
n = 5
hregno = 11
conflict_hregno = 1
base_cost = 2232
class_size = 12
word = 1
nwords = 1
check = 3
spill_cost = 4068
min_cost = -594
nregs = 1
conflict_nregs = 1
r = 2
best = 10
try_p = true
aclass = ALL_REGS
mode = E_SImode
allocno_costs = 0x7e3c3e7313c8
costs = {-1740536, 40443, 0, 484, 552, 0, -2232, -2232, -2232, -2232,
-2232, 0, 1050933376, 32316, -1741856, 32639}
conflicting_regs = {18446744073709547521, 140187730799504}
profitable_hard_regs = 4032
a = 0x7e3c3e791190
bi = {elt1 = 0x7e3c3e7b1a90, elt2 = 0x0, word_no = 0, bits =
4611686018427387903}
__FUNCTION__ = "improve_allocation"
#2 0x0000000000bfea51 in color_allocnos () at ../../gcc/ira-color.c:3201
i = 256
n = 32316
bi = {elt1 = 0x0, elt2 = 0x0, word_no = 2, bits = 0}
a = 0x7e3c3e799050
__FUNCTION__ = "color_allocnos"
#3 0x0000000000bff13f in color_pass (loop_tree_node=0x7e3c3ed2fc00) at
../../gcc/ira-color.c:3310
regno = 32316
hard_regno = -1741504
index = -1
n = 81
cost = 0
exit_freq = 1048255088
enter_freq = 0
j = 256
bi = {elt1 = 0x0, elt2 = 0x0, word_no = 2, bits = 0}
mode = 32639
rclass = NO_REGS
aclass = (unknown: 33152352)
pclass = (ALL_REGS | LIM_REG_CLASSES | unknown: 9049864)
a = 0x7e3c3e799050
subloop_allocno = 0xb8
subloop_node = 0x7f7fffe56d20
__FUNCTION__ = "color_pass"
#4 0x0000000000be8146 in ira_traverse_loop_tree (bb_p=false,
loop_node=0x7e3c3ed2fc00,
preorder_func=0xbfef25 <color_pass(ira_loop_tree_node_t)>,
postorder_func=0x0) at ../../gcc/ira-build.c:1781
subloop_node = 0xbd6ab8 <ira_allocate_bitmap()+14>
__FUNCTION__ = "ira_traverse_loop_tree"
#5 0x0000000000bffa0d in do_coloring () at ../../gcc/ira-color.c:3461
No locals.
#6 0x0000000000c03501 in color () at ../../gcc/ira-color.c:4838
No locals.
#7 0x0000000000c039d3 in ira_color () at ../../gcc/ira-color.c:4953
a = 0x7e3c3e799050
ai = {n = 172}
#8 0x0000000000be30ff in ira (f=0x0) at ../../gcc/ira.c:5308
loops_p = true
ira_max_point_before_emit = 524288
saved_flag_caller_saves = true
saved_flag_ira_region = IRA_REGION_MIXED
__FUNCTION__ = "ira"
#9 0x0000000000be3887 in (anonymous namespace)::pass_ira::execute
(this=0x7e3c3ed86bc0) at ../../gcc/ira.c:5606
No locals.
#10 0x0000000000d142af in execute_one_pass (pass=0x7e3c3ed86bc0) at
../../gcc/passes.c:2497
todo_after = 0
gate_status = true
__FUNCTION__ = "execute_one_pass"
#11 0x0000000000d14600 in execute_pass_list_1 (pass=0x7e3c3ed86bc0) at
../../gcc/passes.c:2586
__FUNCTION__ = "execute_pass_list_1"
#12 0x0000000000d14631 in execute_pass_list_1 (pass=0x7e3c3ed85ac0) at
../../gcc/passes.c:2587
__FUNCTION__ = "execute_pass_list_1"
#13 0x0000000000d14689 in execute_pass_list (fn=0x7e3c3e64c790,
pass=0x7e3c3ed82080) at ../../gcc/passes.c:2597
__FUNCTION__ = "execute_pass_list"
#14 0x0000000000935b0e in cgraph_node::expand (this=0x7e3c3e68c730) at
../../gcc/cgraphunit.c:2139
saved_loc = 62585088
__FUNCTION__ = "expand"
#15 0x0000000000936149 in expand_all_functions () at
../../gcc/cgraphunit.c:2275
node = 0x7e3c3e68c730
order = 0x7e3c3ed2d800
expanded_func_count = 11
profiled_func_count = 0
order_pos = 96
new_order_pos = 18
i = 7
__FUNCTION__ = "expand_all_functions"
#16 0x0000000000936c95 in symbol_table::compile (this=0x7e3c3eb06000) at
../../gcc/cgraphunit.c:2624
No locals.
#17 0x0000000000936eff in symbol_table::finalize_compilation_unit
(this=0x7e3c3eb06000) at ../../gcc/cgraphunit.c:2717
No locals.
#18 0x0000000000dfc753 in compile_file () at ../../gcc/toplev.c:480
No locals.
#19 0x0000000000dfefad in do_compile () at ../../gcc/toplev.c:2132
i = 1
#20 0x0000000000dff289 in toplev::main (this=0x7f7fffe570ce, argc=12,
argv=0x7f7fffe57120) at ../../gcc/toplev.c:2267
__FUNCTION__ = "main"
#21 0x000000000156cd6f in main (argc=12, argv=0x7f7fffe57120) at
../../gcc/main.c:39
toplev = {m_use_TV_TOTAL = true, m_init_signals = true}
