On Apr 21 2017, Richard Biener <rguent...@suse.de> wrote:
> The following fixes uninitialized uses in pass_manager::pass_manager
> which causes bootstrap failure when a fix for PR2972 is applied.
This fails to properly initialize the pass_manager instance, causing cc1
to crash later.
Program received signal SIGSEGV, Segmentation fault.
0x4000000000b417c1 in hash_table<hash_map<nofree_string_hash, opt_pass*,
simple_hashmap_traits<default_hash_traits<nofree_string_hash>, opt_pass*>
>::hash_entry, xcallocator>::find_with_hash (this=0x2000000000988140
<_IO_2_1_stderr_>,
comparable=@0x600ffffffffee790: 0x60000000002f3870 "tree-omplower",
hash=1802803413) at ../../gcc/hash-map.h:57
57 static bool is_empty (const hash_entry &e) { return
Traits::is_empty (e); }
(gdb) bt
#0 0x4000000000b417c1 in hash_table<hash_map<nofree_string_hash, opt_pass*,
simple_hashmap_traits<default_hash_traits<nofree_string_hash>, opt_pass*>
>::hash_entry, xcallocator>::find_with_hash (this=0x2000000000988140
<_IO_2_1_stderr_>,
comparable=@0x600ffffffffee790: 0x60000000002f3870 "tree-omplower",
hash=1802803413) at ../../gcc/hash-map.h:57
#1 0x4000000000b28e30 in hash_map<nofree_string_hash, opt_pass*,
simple_hashmap_traits<default_hash_traits<nofree_string_hash>, opt_pass*>
>::get (
k=@0x600ffffffffee790: 0x60000000002f3870 "tree-omplower",
this=0x2000000000988140 <_IO_2_1_stderr_>) at ../../gcc/hash-map.h:150
#2 gcc::pass_manager::register_pass_name (this=0x60000000002ea0c0,
pass=0x60000000002e7750, name=0x60000000002f3870 "tree-omplower")
at ../../gcc/passes.c:857
#3 0x4000000000b29850 in gcc::pass_manager::register_one_dump_file (
this=0x60000000002ea0c0, pass=0x60000000002e7750) at ../../gcc/passes.c:827
#4 0x4000000000b29b00 in gcc::pass_manager::register_dump_files (
this=0x60000000002ea0c0, pass=0x60000000002e7750) at ../../gcc/passes.c:839
#5 0x4000000000b3f4b0 in gcc::pass_manager::pass_manager (
this=0x60000000002ea0c0, ctxt=<optimized out>) at ../../gcc/passes.c:1607
#6 0x400000000049f110 in gcc::context::context (this=0x60000000002a2f00)
at ../../gcc/context.c:39
#7 0x400000000017def0 in general_init (init_signals=<optimized out>,
argv0=<optimized out>) at ../../gcc/toplev.c:1159
#8 toplev::main (this=0x600ffffffffef0e0, argc=2, argv=0x600ffffffffef388)
at ../../gcc/toplev.c:2089
#9 0x4000000000183e90 in main (argc=2, argv=0x600ffffffffef388)
at ../../gcc/main.c:39
(gdb) f 5
#5 0x4000000000b3f4b0 in gcc::pass_manager::pass_manager (
this=0x60000000002ea0c0, ctxt=<optimized out>) at ../../gcc/passes.c:1607
1607 register_dump_files (all_lowering_passes);
(gdb) p m_name_to_pass_map
$13 = (hash_map<nofree_string_hash, opt_pass*,
simple_hashmap_traits<default_hash_traits<nofree_string_hash>, opt_pass*> > *)
0x2000000000988140 <_IO_2_1_stderr_>
Andreas.
--
Andreas Schwab, sch...@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
