Fix warnings: ex_cmds.c: do_ascii(): Garbage value (2): MI.

Problems   : Assigned value is garbage or undefined @ 127.
             Assigned value is garbage or undefined @ 152.
Diagnostic : Multithreading issues.
Rationale  : Error could only occurr if global `enc_utf8` changed while
             the function is executing.
Resolution : Use local copy of global var.

1 files changed, 6 insertions, 5 deletions

diff --git a/src/nvim/ex_cmds.c b/src/nvim/ex_cmds.c
index f5fa16a139..a71ee7a2fe 100644
--- a/src/nvim/ex_cmds.c
+++ b/src/nvim/ex_cmds.c
@@ -90,8 +90,9 @@ void do_ascii(exarg_T *eap)
   int cc[MAX_MCO];
   int ci = 0;
   int len;
+  const bool l_enc_utf8 = enc_utf8;
 
-  if (enc_utf8)
+  if (l_enc_utf8)
     c = utfc_ptr2char(get_cursor_pos_ptr(), cc);
   else
     c = gchar_cursor();
@@ -123,20 +124,20 @@ void do_ascii(exarg_T *eap)
     vim_snprintf((char *)IObuff, IOSIZE,
         _("<%s>%s%s  %d,  Hex %02x,  Octal %03o"),
         transchar(c), buf1, buf2, cval, cval, cval);
-    if (enc_utf8)
+    if (l_enc_utf8)
       c = cc[ci++];
     else
       c = 0;
   }
 
   /* Repeat for combining characters. */
-  while (has_mbyte && (c >= 0x100 || (enc_utf8 && c >= 0x80))) {
+  while (has_mbyte && (c >= 0x100 || (l_enc_utf8 && c >= 0x80))) {
     len = (int)STRLEN(IObuff);
     /* This assumes every multi-byte char is printable... */
     if (len > 0)
       IObuff[len++] = ' ';
     IObuff[len++] = '<';
-    if (enc_utf8 && utf_iscomposing(c)
+    if (l_enc_utf8 && utf_iscomposing(c)
 # ifdef USE_GUI
         && !gui.in_use
 # endif
@@ -148,7 +149,7 @@ void do_ascii(exarg_T *eap)
         : _("> %d, Hex %08x, Octal %o"), c, c, c);
     if (ci == MAX_MCO)
       break;
-    if (enc_utf8)
+    if (l_enc_utf8)
       c = cc[ci++];
     else
       c = 0;