gdb/infrun: move a 'regcache_read_pc' call down to first use

In infrun.c's resume_1 function, move the definition of the local
variable PC down to its first use.  This is useful if the thread we want
to resume is already gone with a pending exit event, because we avoid
the error we would see otherwise when trying to read the PC.

gdb/ChangeLog:
2020-05-14  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* infrun.c (resume_1): Move a 'regcache_read_pc' call down to first
	use.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 462884ce41ead6c7ecfe71a4976f083b2dda1a59..8b756c451b4c0770880d69cbccbb85d2b9673b72 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,8 @@
+2020-05-14  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>
+
+       * infrun.c (resume_1): Move a 'regcache_read_pc' call down to first
+       use.
+
 2020-05-14  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>
 
        * regcache.c (regcache_read_pc_protected): New function

diff --git a/gdb/infrun.c b/gdb/infrun.c
index 5e01336ab091b72eba524748cd6c7fab22efe4aa..db88a1eef1579bb4c9455ce65ca61b8d6df511c8 100644 (file)
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -2279,7 +2279,6 @@ resume_1 (enum gdb_signal sig)
   struct regcache *regcache = get_current_regcache ();
   struct gdbarch *gdbarch = regcache->arch ();
   struct thread_info *tp = inferior_thread ();
-  CORE_ADDR pc = regcache_read_pc (regcache);
   const address_space *aspace = regcache->aspace ();
   ptid_t resume_ptid;
   /* This represents the user's step vs continue request.  When
@@ -2358,6 +2357,8 @@ resume_1 (enum gdb_signal sig)
       step = 0;
     }
 
+  CORE_ADDR pc = regcache_read_pc (regcache);
+
   if (debug_infrun)
     fprintf_unfiltered (gdb_stdlog,
                        "infrun: resume (step=%d, signal=%s), "