Set members of the struct coding_system before accessing them (bug#9910,9911,9912).

4 files changed, 14 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index f198f37d0c1..3af9590134c 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,14 @@
+2011-11-07  Kenichi Handa  <handa@m17n.org>
+
+        * coding.c (coding_set_destination): Check coding->src_pos only
+        when coding->src_object is a buffer (bug#9910).
+
+        * process.c (send_process): Set the member src_multibyte of coding
+        to 0 (bug#9911) when sending a unibyte text.
+
+        * callproc.c (Fcall_process): Set the member src_multibyte of
+        process_coding to 0 (bug#9912).
+
 2011-11-03  Eli Zaretskii  <eliz@gnu.org>
 
         * xdisp.c (note_mouse_highlight): Initialize `area'.  (Bug#9947)
diff --git a/src/callproc.c b/src/callproc.c
index 97531f73848..0859aaef2e6 100644
--- a/src/callproc.c
+++ b/src/callproc.c
@@ -748,6 +748,7 @@ usage: (call-process PROGRAM &optional INFILE BUFFER DISPLAY &rest ARGS)  */)
         val = raw_text_coding_system (val);
       setup_coding_system (val, &process_coding);
     }
+  process_coding.src_multibyte = 0;
 
   immediate_quit = 1;
   QUIT;
diff --git a/src/coding.c b/src/coding.c
index 5fd59d394d9..79908e9b29b 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -1043,7 +1043,7 @@ coding_set_destination (struct coding_system *coding)
 {
   if (BUFFERP (coding->dst_object))
     {
-      if (coding->src_pos < 0)
+      if (BUFFERP (coding->src_object) && coding->src_pos < 0)
         {
           coding->destination = BEG_ADDR + coding->dst_pos_byte - BEG_BYTE;
           coding->dst_bytes = (GAP_END_ADDR
diff --git a/src/process.c b/src/process.c
index c316139a713..301274676d6 100644
--- a/src/process.c
+++ b/src/process.c
@@ -5387,6 +5387,7 @@ send_process (volatile Lisp_Object proc, const char *volatile buf,
     }
   else
     {
+      coding->src_multibyte = 0;
       /* For sending a unibyte text, character code conversion should
          not take place but EOL conversion should.  So, setup raw-text
          or one of the subsidiary if we have not yet done it.  */