[tor-commits] [tor/master] Reset `buf` after each succesful test to avoid artifacts.

[nickm at torproject.org]

commit ae91e64fa846d2861a6627fbd018665840fd7dd7
Author: Alexander Færøy <ahf at torproject.org>
Date:   Mon Feb 27 15:57:08 2017 +0100

    Reset `buf` after each succesful test to avoid artifacts.
    
    This patch resets `buf` in test_util_fgets_eagain() after each succesful
    ivocation to avoid stray artifacts left in the buffer by erroneous
    tor_fgets() calls.
---
 src/test/test_util.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/test/test_util.c b/src/test/test_util.c
index 7a69916..3e4d45d 100644
--- a/src/test/test_util.c
+++ b/src/test/test_util.c
@@ -3986,6 +3986,7 @@ test_util_fgets_eagain(void *ptr)
   tt_ptr_op(retptr, OP_EQ, buf);
   tt_str_op(buf, OP_EQ, "B\n");
   errno = 0;
+  memset(buf, '\0', sizeof(buf));
 
   /* Send in a full line */
   retlen = write(test_pipe[1], "CD\n", 3);
@@ -3995,6 +3996,7 @@ test_util_fgets_eagain(void *ptr)
   tt_ptr_op(retptr, OP_EQ, buf);
   tt_str_op(buf, OP_EQ, "CD\n");
   errno = 0;
+  memset(buf, '\0', sizeof(buf));
 
   /* Send in a partial line */
   retlen = write(test_pipe[1], "E", 1);
@@ -4013,6 +4015,7 @@ test_util_fgets_eagain(void *ptr)
   tt_ptr_op(retptr, OP_EQ, buf);
   tt_str_op(buf, OP_EQ, "F\n");
   errno = 0;
+  memset(buf, '\0', sizeof(buf));
 
   /* Send in a full line and close */
   retlen = write(test_pipe[1], "GH", 2);
@@ -4036,6 +4039,7 @@ test_util_fgets_eagain(void *ptr)
 
   /* Check that buf is unchanged according to C99 and C11 */
   tt_str_op(buf, OP_EQ, "GH");
+  memset(buf, '\0', sizeof(buf));
 
  done:
   if (test_stream != NULL)