[Bug ipa/92242] [10 regression] LTO ICE in ipa_get_cs_argument_count ipa-prop.h:598

[dimhen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92242

--- Comment #2 from Dmitry G. Dyachenko <dimhen at gmail dot com> ---
correctly reduced testcase

$ cat x.i
unsigned foo(int a) {
  if (a)
    return 0;
  return 1;
}

$ cat y.i
unsigned foo(int);
int bar() {
  foo(0);
  return 0;
}

$ cat libso.ver
{ global:
bar;
local: *; };

$ gcc -O2 -flto -Wall -c x.i y.i

$ gcc -flto -fPIC -DPIC -shared x.o y.o -Wl,-version-script -Wl,./libso.ver -o
libso.so
during IPA pass: inline
lto1: internal compiler error: Segmentation fault
0xdd4bdf crash_signal
        /home/dimhen/src/gcc_current/gcc/toplev.c:326
0x64e28d ipa_get_cs_argument_count
        /home/dimhen/src/gcc_current/gcc/ipa-prop.h:598
0x64e28d ipa_merge_fn_summary_after_inlining(cgraph_edge*)
        /home/dimhen/src/gcc_current/gcc/ipa-fnsummary.c:3318
0x16f66db inline_call(cgraph_edge*, bool, vec<cgraph_edge*, va_heap, vl_ptr>*,
int*, bool, bool*)
        /home/dimhen/src/gcc_current/gcc/ipa-inline-transform.c:484
0x16f0682 inline_small_functions
        /home/dimhen/src/gcc_current/gcc/ipa-inline.c:2151
0x16f0682 ipa_inline
        /home/dimhen/src/gcc_current/gcc/ipa-inline.c:2615
0x16f0682 execute
        /home/dimhen/src/gcc_current/gcc/ipa-inline.c:3023
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
$ gcc -flto -fPIC -DPIC -shared x.o y.o -Wl,-version-script -Wl,./libso.ver -o
libso.so
during IPA pass: inline
lto1: internal compiler error: Segmentation fault
0xdd4bdf crash_signal
        /home/dimhen/src/gcc_current/gcc/toplev.c:326
0x64e28d ipa_get_cs_argument_count
        /home/dimhen/src/gcc_current/gcc/ipa-prop.h:598
0x64e28d ipa_merge_fn_summary_after_inlining(cgraph_edge*)
        /home/dimhen/src/gcc_current/gcc/ipa-fnsummary.c:3318
0x16f66db inline_call(cgraph_edge*, bool, vec<cgraph_edge*, va_heap, vl_ptr>*,
int*, bool, bool*)
        /home/dimhen/src/gcc_current/gcc/ipa-inline-transform.c:484
0x16f0682 inline_small_functions
        /home/dimhen/src/gcc_current/gcc/ipa-inline.c:2151
0x16f0682 ipa_inline
        /home/dimhen/src/gcc_current/gcc/ipa-inline.c:2615
0x16f0682 execute
        /home/dimhen/src/gcc_current/gcc/ipa-inline.c:3023
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.