[PATCH 5/5] Remove the old sanity check of sigcontext offsets for NetBSD/i386

[Kamil Rytarowski <n54@gmx.com>]

NetBSD switched to ucontext, back in 2003 and the sigcontext code
is no longer available for users, except for legacy compat layers.

This code was not available anyway as the pre-processor check
was probably never operational and buildable on NetBSD. The code
inside it does not compile.

Meanwhile, move the offset variable into the ifdef goards and avoid
the error about unused variable.

../../gdb/i386-bsd-nat.c: In function 'void _initialize_i386bsd_nat()':
../../gdb/i386-bsd-nat.c:347:7: error: unused variable 'offset' [-Werror=unused-variable]
  347 |   int offset;
      |       ^~~~~~
cc1plus: all warnings being treated as errors

gdb/ChangeLog:

	* i386-bsd-nat.c (_initialize_i386bsd_nat): Update.
---
 gdb/ChangeLog      | 4 ++++
 gdb/i386-bsd-nat.c | 6 +-----
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index c95e681b4a8..716df36fdd2 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2020-09-23  Kamil Rytarowski  <n54@gmx.com>
+
+	* i386-bsd-nat.c (_initialize_i386bsd_nat): Update.
+
 2020-09-23  Kamil Rytarowski  <n54@gmx.com>

 	* i386-nbsd-nat.c: Include "x86-bsd-nat.h".
diff --git a/gdb/i386-bsd-nat.c b/gdb/i386-bsd-nat.c
index 4e8693246c8..12b45efb465 100644
--- a/gdb/i386-bsd-nat.c
+++ b/gdb/i386-bsd-nat.c
@@ -344,8 +344,6 @@ void _initialize_i386bsd_nat ();
 void
 _initialize_i386bsd_nat ()
 {
-  int offset;
-
   /* To support the recognition of signal handlers, i386-bsd-tdep.c
      hardcodes some constants.  Inclusion of this file means that we
      are compiling a native debugger, which means that we can use the
@@ -356,8 +354,6 @@ _initialize_i386bsd_nat ()
 #define SC_REG_OFFSET i386fbsd4_sc_reg_offset
 #elif defined (__FreeBSD_version) && __FreeBSD_version >= 300005
 #define SC_REG_OFFSET i386fbsd_sc_reg_offset
-#elif defined (NetBSD) || defined (__NetBSD_Version__)
-#define SC_REG_OFFSET i386nbsd_sc_reg_offset
 #elif defined (OpenBSD)
 #define SC_REG_OFFSET i386obsd_sc_reg_offset
 #endif
@@ -376,7 +372,7 @@ _initialize_i386bsd_nat ()

   /* Override the default value for the offset of the program counter
      in the sigcontext structure.  */
-  offset = offsetof (struct sigcontext, sc_pc);
+  int offset = offsetof (struct sigcontext, sc_pc);

   if (SC_PC_OFFSET != offset)
     {
--
2.28.0