[qemu-xen staging] semihosting: don't send the trailing '\0'

[patchbot@xxxxxxx]

commit 7d2d6522bbadfa8d9877e38bfa7413444fa64fbb
Author:     KONRAD Frederic <frederic.konrad@xxxxxxxxxxx>
AuthorDate: Fri Jul 24 07:44:56 2020 +0100
Commit:     Alex Bennée <alex.bennee@xxxxxxxxxx>
CommitDate: Mon Jul 27 09:40:08 2020 +0100

    semihosting: don't send the trailing '\0'
    
    Don't send the trailing 0 from the string.
    
    Signed-off-by: KONRAD Frederic <frederic.konrad@xxxxxxxxxxx>
    Signed-off-by: Alex Bennée <alex.bennee@xxxxxxxxxx>
    Reviewed-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
    Reviewed-by: Richard Henderson <richard.henderson@xxxxxxxxxx>
    Message-Id: <1592215252-26742-2-git-send-email-frederic.konrad@xxxxxxxxxxx>
    Message-Id: <20200724064509.331-4-alex.bennee@xxxxxxxxxx>
---
 hw/semihosting/console.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/semihosting/console.c b/hw/semihosting/console.c
index 22e7827824..9b4fee9260 100644
--- a/hw/semihosting/console.c
+++ b/hw/semihosting/console.c
@@ -52,7 +52,9 @@ static GString *copy_user_string(CPUArchState *env, 
target_ulong addr)
 
     do {
         if (cpu_memory_rw_debug(cpu, addr++, &c, 1, 0) == 0) {
-            s = g_string_append_c(s, c);
+            if (c) {
+                s = g_string_append_c(s, c);
+            }
         } else {
             qemu_log_mask(LOG_GUEST_ERROR,
                           "%s: passed inaccessible address " TARGET_FMT_lx,
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#staging