Alex Henrie : msvcrt/tests: Check errno after strdup(NULL).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 1cade77fc4f4fb01f1d485ca33721f015f6c4ef5
URL:    https://gitlab.winehq.org/wine/wine/-/commit/1cade77fc4f4fb01f1d485ca33721f0...

Author: Alex Henrie <alexhenrie24(a)gmail.com>
Date:   Wed Oct 11 09:18:37 2023 -0600

msvcrt/tests: Check errno after strdup(NULL).

---

 dlls/msvcrt/tests/string.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/dlls/msvcrt/tests/string.c b/dlls/msvcrt/tests/string.c
index 6a9dc23d4f0..10c7fea4439 100644
--- a/dlls/msvcrt/tests/string.c
+++ b/dlls/msvcrt/tests/string.c
@@ -642,10 +642,11 @@ static void test_mbsspnp( void)
 
 static void test_strdup(void)
 {
-   char *str;
-   str = _strdup( 0 );
-   ok( str == 0, "strdup returns %s should be 0\n", str);
-   free( str );
+    char *str;
+    errno = 0xdeadbeef;
+    str = strdup(0);
+    ok(str == 0, "strdup returned %s, expected NULL\n", wine_dbgstr_a(str));
+    ok(errno == 0xdeadbeef, "errno is %d, expected 0xdeadbeef\n", errno);
 }
 
 static void test_strcmp(void)