* coding.c (encode_coding_raw_text): Avoid unnecessary test

the first time through the loop, since we know p0 < p1 then.
This also avoids a gcc -Wstrict-overflow warning.

2 files changed, 6 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index a341d1b4678..45982f607f4 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,9 @@
 2011-03-22  Paul Eggert  <eggert@cs.ucla.edu>
 
+        * coding.c (encode_coding_raw_text): Avoid unnecessary test
+        the first time through the loop, since we know p0 < p1 then.
+        This also avoids a gcc -Wstrict-overflow warning.
+
         * lisp.h (SAFE_ALLOCA, SAFE_ALLOCA_LISP): Avoid 'int' overflow
         leading to a memory leak, possible in functions like
         load_charset_map_from_file that can allocate an unbounded number
diff --git a/src/coding.c b/src/coding.c
index 0c2836c19f6..0596d16bf46 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -5266,11 +5266,12 @@ encode_coding_raw_text (struct coding_system *coding)
                 unsigned char str[MAX_MULTIBYTE_LENGTH], *p0 = str, *p1 = str;
 
                 CHAR_STRING_ADVANCE (c, p1);
-                while (p0 < p1)
+                do
                   {
                     EMIT_ONE_BYTE (*p0);
                     p0++;
                   }
+                while (p0 < p1);
               }
           }
       else