[Bug tdep/27172] [-m32] FAIL: gdb.arch/i386-mpx-sigsegv.exp: MPX signal segv Lower: 0

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=27172

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
Tentative patch:
...
diff --git a/gdb/nat/amd64-linux-siginfo.c b/gdb/nat/amd64-linux-siginfo.c
index 8bcff454378..1b10f5c2cdb 100644
--- a/gdb/nat/amd64-linux-siginfo.c
+++ b/gdb/nat/amd64-linux-siginfo.c
@@ -277,6 +277,8 @@ typedef struct compat_x32_siginfo
 #define cpt_si_ptr _sifields._rt._sigval.sival_ptr
 #define cpt_si_addr _sifields._sigfault._addr
 #define cpt_si_addr_lsb _sifields._sigfault._addr_lsb
+#define cpt_si_lower _sifields._sigfault.si_addr_bnd._lower
+#define cpt_si_upper _sifields._sigfault.si_addr_bnd._upper
 #define cpt_si_band _sifields._sigpoll._band
 #define cpt_si_fd _sifields._sigpoll._fd

@@ -324,6 +326,12 @@ compat_siginfo_from_siginfo (compat_siginfo_t *to, const
siginfo_t *fr
om)
       to->cpt_si_pid = from_ptrace.cpt_si_pid;
       to->cpt_si_uid = from_ptrace.cpt_si_uid;
     }
+  else if (to->si_code == 3 && to->si_signo == SIGSEGV)
+    {
+      to->cpt_si_addr = from_ptrace.cpt_si_addr;
+      to->cpt_si_lower = from_ptrace.cpt_si_lower;
+      to->cpt_si_upper = from_ptrace.cpt_si_upper;
+    }--
   else if (to->si_code < 0)
     {
       to->cpt_si_pid = from_ptrace.cpt_si_pid;
...

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