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[Qemu-trivial] [PATCH for 2.10 v2 12/20] syscall: fix dereference of und


From: Philippe Mathieu-Daudé
Subject: [Qemu-trivial] [PATCH for 2.10 v2 12/20] syscall: fix dereference of undefined pointer
Date: Wed, 26 Jul 2017 23:42:17 -0300

linux-user/syscall.c:5581:9: warning: Dereference of undefined pointer value
    if (*host_rt_dev_ptr != 0) {
        ^~~~~~~~~~~~~~~~

Reported-by: Clang Static Analyzer
Suggested-by: Laurent Vivier <address@hidden>
Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
---
 linux-user/syscall.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 003943b736..71d45a9963 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -5573,6 +5573,7 @@ static abi_long do_ioctl_rt(const IOCTLEntry *ie, uint8_t 
*buf_temp,
                                     field_types, THUNK_HOST);
     }
     unlock_user(argptr, arg, 0);
+    assert(host_rt_dev_ptr);
 
     ret = get_errno(safe_ioctl(fd, ie->host_cmd, buf_temp));
     if (*host_rt_dev_ptr != 0) {
-- 
2.13.3




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