https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64340
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's fixed by dropping all of TI_TARGET_OPTION_DEFAULT,
TI_TARGET_OPTION_CURRENT, TI_CURRENT_TARGET_PRAGMA and
TI_CURRENT_OPTIMIZE_PRAGMA from the special-casing.
We are trying to expand a GIMPLE_RESX stmt which should have been lowered
before.
(gdb) p opts_for_fn (cfun->decl)->x_flag_exceptions
$3 = 0 '\000'
thus somehow -fexceptions is bogus (also in 'Optimization' for some weird
reason).
(gdb) p global_options.x_flag_exceptions
$4 = 0
But certainly -fexceptions -fnon-call-exceptions was specified for both
source TUs and thus via lto-wrapper xgcc should have received them. But
lto1 seems to ignore -fexceptions.
I've reproduced pasting the gnatmake command and then (gnatlink fails)
./lto1 -quiet lto8.o lto8_pkg.o -fexceptions -fnon-call-exceptions
The bogus setting is "restored" via
Hardware watchpoint 5: *$3
Old value = 1
New value = 0
cl_optimization_restore (opts=0x203fc80 <global_options>, ptr=0x7ffff6c344b0)
at options-save.c:476
476 opts->x_flag_expensive_optimizations =
ptr->x_flag_expensive_optimizations;
#0 cl_optimization_restore (opts=0x203fc80 <global_options>,
ptr=0x7ffff6c344b0) at options-save.c:476
#1 0x00000000008f4603 in invoke_set_current_function_hook (fndecl=
<function_decl 0x7ffff6e1a000 lto8___finalizer>)
at /space/rguenther/src/svn/trunk2/gcc/function.c:4665
#2 0x00000000008f4909 in allocate_struct_function (
fndecl=<function_decl 0x7ffff6e1a000 lto8___finalizer>, abstract_p=false)
at /space/rguenther/src/svn/trunk2/gcc/function.c:4777
#3 0x00000000008f4b09 in push_struct_function (
fndecl=<function_decl 0x7ffff6e1a000 lto8___finalizer>)
at /space/rguenther/src/svn/trunk2/gcc/function.c:4819
#4 0x0000000000aed772 in input_function (
fn_decl=<function_decl 0x7ffff6e1a000 lto8___finalizer>,
data_in=0x2062810, ib=0x7fffffffdad0, ib_cfg=0x7fffffffdac0)
at /space/rguenther/src/svn/trunk2/gcc/lto-streamer-in.c:945
#5 0x0000000000aee06d in lto_read_body_or_constructor (
file_data=0x7ffff7ff6000, node=0x7ffff6c347a8, data=0x20a2540 "\004",
section_type=LTO_section_function_body)
at /space/rguenther/src/svn/trunk2/gcc/lto-streamer-in.c:1108
#6 0x0000000000aee311 in lto_input_function_body (file_data=0x7ffff7ff6000,
node=<cgraph_node* 0x7ffff6c347a8 "lto8___finalizer">,
data=0x20a2540 "\004")
at /space/rguenther/src/svn/trunk2/gcc/lto-streamer-in.c:1153
now the question is why there is false for those options in the function
specific optimization nodes. When do we populate these?
