https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109005
--- Comment #4 from simon at pushface dot org ---
(In reply to Richard Biener from comment #3)
> Eh, I'm hoping for a C testcase ... what's the actual ICE?
This is an LLDB session -- hope that helps
$ lldb /opt/gcc-13-20230226/libexec/gcc/x86_64-apple-darwin15/13.0.1/gnat1
(lldb) target create
"/opt/gcc-13-20230226/libexec/gcc/x86_64-apple-darwin15/13.0.1/gnat1"
Current executable set to
'/opt/gcc-13-20230226/libexec/gcc/x86_64-apple-darwin15/13.0.1/gnat1' (x86_64).
(lldb) run -quiet -O2 -dumpbase stm32-timers.adb -dumpbase-ext .adb -gnatez
-gnatea -gnatez -mmacosx-version-min=12.0.0 -mtune=core2 -fPIC stm32-timers.adb
-o /var/folders/_q/fvnxz46903z9hjh38fz0lyhm0000gs/T//cc4fhSaX.s
Process 55466 launched:
'/opt/gcc-13-20230226/libexec/gcc/x86_64-apple-darwin15/13.0.1/gnat1' (x86_64)
during GIMPLE pass: ifcvt
Process 55466 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0x0)
frame #0: 0x00007ff80dd106b2 libsystem_platform.dylib`_platform_strlen + 18
libsystem_platform.dylib`:
-> 0x7ff80dd106b2 <+18>: pcmpeqb (%rdi), %xmm0
0x7ff80dd106b6 <+22>: pmovmskb %xmm0, %esi
0x7ff80dd106ba <+26>: andq $0xf, %rcx
0x7ff80dd106be <+30>: orq $-0x1, %rax
Target 0: (gnat1) stopped.
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS
(code=1, address=0x0)
* frame #0: 0x00007ff80dd106b2 libsystem_platform.dylib`_platform_strlen + 18
frame #1: 0x0000000102a43f24 gnat1`libiberty_vprintf_buffer_size + 779
frame #2: 0x0000000102a483f1 gnat1`xvasprintf + 35
frame #3: 0x0000000102a48082 gnat1`xasprintf + 159
frame #4: 0x000000010003e629
gnat1`internal_error_function(diagnostic_context*, char const*, __va_list_tag
(*) [1]) + 415
frame #5: 0x000000010296caf1
gnat1`diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*) + 635
frame #6: 0x000000010296d2c1 gnat1`diagnostic_impl(rich_location*,
diagnostic_metadata const*, int, char const*, __va_list_tag (*) [1],
diagnostic_t) + 272
frame #7: 0x000000010296ed3f gnat1`internal_error(char const*, ...) + 239
frame #8: 0x000000010296f099 gnat1`fancy_abort(char const*, int, char
const*) + 293
frame #9: 0x00000001024a1dae gnat1`make_ssa_name_fn(function*, tree_node*,
gimple*, unsigned int) + 141
frame #10: 0x00000001024b2955 gnat1`make_temp_ssa_name(tree_node*, gimple*,
char const*) + 109
frame #11: 0x000000010221a144 gnat1`ifc_temp_var(tree_node*, tree_node*,
gimple_stmt_iterator*) + 44
frame #12: 0x00000001022238ea gnat1`lower_bitfield(gassign*, bool) + 415
frame #13: 0x0000000102224670 gnat1`tree_if_conversion(loop*, vec<gimple*,
va_heap, vl_ptr>*) + 1337
frame #14: 0x0000000102224b47 gnat1`(anonymous
namespace)::pass_if_conversion::execute(function*) + 275
frame #15: 0x0000000101f7aac8 gnat1`execute_one_pass(opt_pass*) + 800
frame #16: 0x0000000101f7af07 gnat1`execute_pass_list_1(opt_pass*) + 92
frame #17: 0x0000000101f7af38 gnat1`execute_pass_list_1(opt_pass*) + 141
frame #18: 0x0000000101f7af38 gnat1`execute_pass_list_1(opt_pass*) + 141
frame #19: 0x0000000101f7af9e gnat1`execute_pass_list(function*, opt_pass*)
+ 74
frame #20: 0x00000001017c53c0 gnat1`cgraph_node::expand() + 590
frame #21: 0x00000001017c5c61 gnat1`expand_all_functions() + 778
frame #22: 0x00000001017c6b0c gnat1`symbol_table::compile() + 962
frame #23: 0x00000001017c700e
gnat1`symbol_table::finalize_compilation_unit() + 318
frame #24: 0x000000010214fcf1 gnat1`compile_file() + 233
frame #25: 0x00000001021535d0 gnat1`do_compile(bool) + 802
frame #26: 0x0000000102153b0f gnat1`toplev::main(int, char**) + 721
frame #27: 0x000000010293ad78 gnat1`main + 59
frame #28: 0x000000010536052e dyld`start + 462
(lldb) q
