[PATCH v2 1/6] gdbserver: Add asserts in register_size and register_data functions

[Thiago Jung Bauermann <thiago.bauermann@linaro.org>]

These helped me during development, catching bugs closer to when they
actually happened.
---
 gdbserver/regcache.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gdbserver/regcache.cc b/gdbserver/regcache.cc
index 5cbcea978a05..14236069f712 100644
--- a/gdbserver/regcache.cc
+++ b/gdbserver/regcache.cc
@@ -286,6 +286,8 @@ register_cache_size (const struct target_desc *tdesc)
 int
 register_size (const struct target_desc *tdesc, int n)
 {
+  gdb_assert (n >= 0 && n < tdesc->reg_defs.size ());
+
   return find_register_by_number (tdesc, n).size / 8;
 }
 
@@ -300,6 +302,8 @@ regcache_register_size (const struct regcache *regcache, int n)
 static unsigned char *
 register_data (const struct regcache *regcache, int n)
 {
+  gdb_assert(n >= 0 && n < regcache->tdesc->reg_defs.size());
+
   return (regcache->registers
 	  + find_register_by_number (regcache->tdesc, n).offset / 8);
 }