commit 10abb25af46c4b452d65d55fd7a16f74a4184897
author Cody P Schafer <cody@linux.vnet.ibm.com> Fri Sep 14 17:12:00 2012 -0700
committer Arun Sharma <asharma@fb.com> Sat Sep 15 10:47:43 2012 -0700
tree c946db7013934afd2724b35619332449aff2248b
parent f8cfe8388a58b3020a2cb3314fc3421b5b3101bb

ptrace/access_reg: print out register name on "bad register"

When we have a "bad register", print out the name of that register (if
possible) to aid in debugging.

src/ptrace/_UPT_access_reg.c

diff --git a/src/ptrace/_UPT_access_reg.c b/src/ptrace/_UPT_access_reg.c
index 00ba0cc..99949b2 100644
--- a/src/ptrace/_UPT_access_reg.c
+++ b/src/ptrace/_UPT_access_reg.c
@@ -251,7 +251,7 @@
   return 0;
 
  badreg:
-  Debug (1, "bad register number %u (error: %s)\n", reg, strerror (errno));
+  Debug (1, "bad register %s [%u] (error: %s)\n", unw_regname(reg), reg, strerror (errno));
   return -UNW_EBADREG;
 }
 #elif HAVE_DECL_PT_GETREGS
@@ -285,7 +285,7 @@
   return 0;
 
  badreg:
-  Debug (1, "bad register number %u (error: %s)\n", reg, strerror (errno));
+  Debug (1, "bad register %s [%u] (error: %s)\n", unw_regname(reg), reg, strerror (errno));
   return -UNW_EBADREG;
 }
 #else