https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89079
--- Comment #2 from airplanemath <airplanemath at aol dot com> ---
Running gfortran with "-wrapper gdb,--args" notes the segfault with:
---
Thread 1 "f951" received signal SIGSEGV, Segmentation fault.
0x00000001004fcf20 in build_common_decl (is_init=false, union_type=<optimized
out>, com=0x60013e1f0) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:463
463 attributes = gfc_add_attributes_to_decl (com->head->attr,
NULL_TREE);
---
Running "bt full" produces
---
#0 0x00000001004fcf20 in build_common_decl (is_init=false,
union_type=<optimized out>, com=0x60013e1f0) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:463
attributes = <optimized out>
decl = 0x6fffff00ab0
identifier = 0x6ffffbd4a60
decl = <optimized out>
identifier = <optimized out>
size = <optimized out>
attributes = <optimized out>
field = <optimized out>
#1 create_common (com=com@entry=0x60013e1f0, head=<optimized out>,
saw_equiv=saw_equiv@entry=true) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:672
s = <optimized out>
next_s = <optimized out>
union_type = <optimized out>
field_link = <optimized out>
field = <optimized out>
field_init = <optimized out>
rli = <optimized out>
decl = <optimized out>
is_init = <optimized out>
is_saved = <optimized out>
__FUNCTION__ = "create_common"
#2 0x00000001004fd800 in finish_equivalences (ns=0x600128a00) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:1270
y = <optimized out>
sym = <optimized out>
c = 0x60013e1f0
align = 4
z = 0x60013d510
offset = <optimized out>
dummy = true
z = <optimized out>
y = <optimized out>
sym = <optimized out>
c = <optimized out>
offset = <optimized out>
align = <optimized out>
dummy = <optimized out>
#3 gfc_trans_common (ns=ns@entry=0x600128a00) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-common.c:1307
c = <optimized out>
#4 0x000000010050c3a0 in gfc_generate_module_vars (ns=ns@entry=0x600128a00) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans-decl.c:5287
__FUNCTION__ = "gfc_generate_module_vars"
#5 0x00000001004e6adf in gfc_generate_module_code (ns=0x600128a00) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/trans.c:2176
n = <optimized out>
entry = 0x6fffff49780
__FUNCTION__ = "gfc_generate_module_code"
#6 0x00000001004982c2 in translate_all_program_units
(gfc_global_ns_list=<optimized out>) at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/parse.c:6062
errors = 0
errors = <optimized out>
ns = <optimized out>
#7 gfc_parse_file () at /usr/src/debug/gcc-7.4.0-1/gcc/fortran/parse.c:6275
seen_program = <optimized out>
errors_before = 0
errors = 0
top = {state = COMP_NONE, sym = 0x0, do_variable = 0x0, construct =
0x0, head = 0x0, tail = 0x0, previous = 0x0, ext = {end_do_label = 0xffffcb94,
oacc_declare_clauses = 0xffffcb94}}
s = {state = COMP_MODULE, sym = 0x6001293b0, do_variable = 0x0,
construct = 0x0, head = 0x0, tail = 0x0, previous = 0xffffc7b0, ext =
{end_do_label = 0x0, oacc_declare_clauses = 0x0}}
st = <optimized out>
prog_locus = {nextc = 0xffffca46, lb = 0xffffcb94}
next = <optimized out>
#8 0x00000001004df32b in gfc_be_parse_file () at
/usr/src/debug/gcc-7.4.0-1/gcc/fortran/f95-lang.c:204
No locals.
#9 0x00000001008fd8ac in compile_file () at
/usr/src/debug/gcc-7.4.0-1/gcc/toplev.c:467
No locals.
#10 0x00000001010e7b8d in do_compile () at
/usr/src/debug/gcc-7.4.0-1/gcc/toplev.c:2003
i = 1
#11 toplev::main (this=this@entry=0xffffca46, argc=<optimized out>,
argc@entry=17, argv=<optimized out>, argv@entry=0xffffcac0) at
/usr/src/debug/gcc-7.4.0-1/gcc/toplev.c:2138
__FUNCTION__ = "main"
#12 0x0000000101107545 in main (argc=17, argv=0xffffcac0) at
/usr/src/debug/gcc-7.4.0-1/gcc/main.c:39
toplev = {m_use_TV_TOTAL = true, m_init_signals = true}
---
I also ran "info locals", which printed:
toplev = {m_use_TV_TOTAL = true, m_init_signals = true}
What other information would help narrow this down? I've exhausted my current
knowledge of gcc and gdb.
