https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83917
Bug ID: 83917
Summary: [8 Regression] with -mcall-ms2sysv-xlogues, stepping
into x86 tail-call restore stub gives bad backtrace
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: daniel.santos at pobox dot com
Target Milestone: ---
Target: x86-64-*-*
Here is an example.
0x000000007bc8fd8e 465 if ((status = alloc_object_attributes(
attr, &objattr, &len ))) return status;
1: x/2i $rip
=> 0x7bc8fd8e <NtCreateMutant+78>: jmpq 0x7bcaebbc <__sse_resms64fx_16>
0x7bc8fd93 <NtCreateMutant+83>: nopl 0x0(%rax,%rax,1)
Wine-gdb>
__sse_resms64fx_16 () at
/home/daniel/proj/sys/gcc/git/libgcc/config/i386/resms64fx.h:39
39 mov -0x60(%rsi),%r14
1: x/2i $rip
=> 0x7bcaebbc <__sse_resms64fx_16>: mov -0x60(%rsi),%r14
0x7bcaebc0 <__sse_resms64fx_15>: mov -0x58(%rsi),%r13
Wine-gdb> bt
#0 __sse_resms64fx_16 () at
/home/daniel/proj/sys/gcc/git/libgcc/config/i386/resms64fx.h:39
#1 0x006900750062005c in ?? ()
#2 0x006d005c0064006c in ?? ()
#3 0x003b00320033006d in ?? ()
#4 0x0077005c003a0043 in ?? ()
#5 0x0000003c006e0069 in ?? ()
#6 0x0000000000034850 in ?? ()
#7 0x0000000000000000 in ?? ()
At this point, I'm not emitting any debug information in the stubs.
