https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94239
Bug ID: 94239
Summary: [10 regression] cc1 SEGV in
get_location_from_adhoc_loc with gcc.dg/pr20245-1.c
etc.
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Host: i386-pc-solaris2.11
Target: i386-pc-solaris2.11
Build: i386-pc-solaris2.11
Between 20200319 (f22712bd8a2ed57d3cc7e6fa92730bd5852e27b3) and 20200320
(719c864225e28c33a0737a331a772781ce8e6591), two tests regressed on Solaris
11/x86
(32-bit only):
+FAIL: gcc.dg/pr20245-1.c (internal compiler error)
+FAIL: gcc.dg/pr20245-1.c (test for excess errors)
Excess errors:
during GIMPLE pass: lower
/vol/gcc/src/hg/master/local/gcc/testsuite/gcc.dg/pr20245-1.c:5:6: internal
compiler error: Segmentation Fault
0x91a511c crash_signal
/vol/gcc/src/hg/master/local/gcc/toplev.c:328
0x9d33aa6 get_location_from_adhoc_loc(line_maps const*, unsigned int)
/vol/gcc/src/hg/master/local/libcpp/line-map.c:257
0x9d33aa6 get_pure_location(line_maps*, unsigned int)
/vol/gcc/src/hg/master/local/libcpp/line-map.c:323
+FAIL: gcc.dg/pr28419.c (internal compiler error)
+FAIL: gcc.dg/pr28419.c (test for excess errors)
Excess errors:
during GIMPLE pass: lower
/vol/gcc/src/hg/master/local/gcc/testsuite/gcc.dg/pr28419.c:2:6: internal
compiler error: Segmentation Fault
0x91a511c crash_signal
/vol/gcc/src/hg/master/local/gcc/toplev.c:328
0x9d33aa6 get_location_from_adhoc_loc(line_maps const*, unsigned int)
/vol/gcc/src/hg/master/local/libcpp/line-map.c:257
0x9d33aa6 get_pure_location(line_maps*, unsigned int)
/vol/gcc/src/hg/master/local/libcpp/line-map.c:323
The failure can be reproduced with
$ cc1 -fpreprocessed pr20245-1.i -quiet -o pr20245-1.s
Thread 2 received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1 (LWP 1)]
0x09d33aa6 in get_location_from_adhoc_loc (loc=4264370176, set=0xfaefb000)
at /vol/gcc/src/hg/master/local/libcpp/line-map.c:257
257 return set->location_adhoc_data_map.data[loc & MAX_LOCATION_T].locus;
(gdb) where
#0 0x09d33aa6 in get_location_from_adhoc_loc (loc=4264370176, set=0xfaefb000)
at /vol/gcc/src/hg/master/local/libcpp/line-map.c:257
#1 get_pure_location (set=0xfaefb000, loc=4264370176)
at /vol/gcc/src/hg/master/local/libcpp/line-map.c:323
#2 0x094c0da5 in get_pure_location (loc=4264370176)
at /vol/gcc/src/hg/master/local/gcc/input.h:148
#3 set_block (loc=4264370176, block=<block 0xfa4a0000>)
at /vol/gcc/src/hg/master/local/gcc/tree.c:14840
#4 0x09b634df in gimple_set_block (block=<optimized out>, g=
<gimple_return 0xfa4967b0>)
at /vol/gcc/src/hg/master/local/gcc/gimple.h:1865
#5 lower_function_body () at /vol/gcc/src/hg/master/local/gcc/gimple-low.c:136
#6 (anonymous namespace)::pass_lower_cf::execute (this=<optimized out>)
at /vol/gcc/src/hg/master/local/gcc/gimple-low.c:195
#7 0x090b5a1e in execute_one_pass (pass=<opt_pass* 0xa42d160 "lower"(13)>)
at /vol/gcc/src/hg/master/local/gcc/passes.c:2502
#8 0x090b6385 in execute_pass_list_1 (pass=<opt_pass* 0xa42d160 "lower"(13)>,
pass@entry=<opt_pass* 0xa42d060 "*warn_unused_result"(-1)>)
at /vol/gcc/src/hg/master/local/gcc/passes.c:2590
#9 0x090b63ce in execute_pass_list (fn=0xfa49f000,
pass=<opt_pass* 0xa42d060 "*warn_unused_result"(-1)>)
at /vol/gcc/src/hg/master/local/gcc/passes.c:2601
#10 0x08cbbcfa in cgraph_node::analyze (this=<optimized out>)
at /vol/gcc/src/hg/master/local/gcc/context.h:48
#11 0x08cbea41 in analyze_functions (first_time=first_time@entry=true)
at /vol/gcc/src/hg/master/local/gcc/cgraphunit.c:1227
#12 0x08cbf5a7 in symbol_table::finalize_compilation_unit (this=0xfa4080d0)
at /vol/gcc/src/hg/master/local/gcc/cgraphunit.c:2973
#13 0x091a5571 in compile_file ()
at /vol/gcc/src/hg/master/local/gcc/toplev.c:483
#14 0x091a7b9f in do_compile ()
at /vol/gcc/src/hg/master/local/gcc/toplev.c:2273
#15 toplev::main (this=0xfeffd8de, argc=<optimized out>, argv=<optimized out>)
at /vol/gcc/src/hg/master/local/gcc/toplev.c:2412
#16 0x09cd6ae1 in main (argc=6, argv=0xfeffd944)
at /vol/gcc/src/hg/master/local/gcc/main.c:39
