Piotr Caban : ucrtbase: Handle empty list in variadic template.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 841f33afbb1367ecf32e4a03993379738d211e5a
URL:    https://gitlab.winehq.org/wine/wine/-/commit/841f33afbb1367ecf32e4a039933797...

Author: Piotr Caban 
Date:   Tue May 14 18:43:05 2024 +0200

ucrtbase: Handle empty list in variadic template.

---

dlls/msvcrt/undname.c     |  6 ++++++
 dlls/ucrtbase/tests/cpp.c | 10 ++++++++--
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/dlls/msvcrt/undname.c b/dlls/msvcrt/undname.c
index 85ee181fc2c..6b255109e1f 100644
--- a/dlls/msvcrt/undname.c
+++ b/dlls/msvcrt/undname.c
@@ -378,6 +378,12 @@ static char* get_args(struct parsed_symbol* sym, BOOL z_term,
             sym->current++;
             break;
         }
+        /* Handle empty list in variadic template */
+        if (!z_term && sym->current[0] == '$' && sym->current[1] == '$' && sym->current[2] == 'V')
+        {
+            sym->current += 3;
+            continue;
+        }
         if (!demangle_datatype(sym, &ct, IN_ARGS))
             return NULL;
         /* 'void' terminates an argument list in a function */
diff --git a/dlls/ucrtbase/tests/cpp.c b/dlls/ucrtbase/tests/cpp.c
index 9a66d66d814..c20f889d686 100644
--- a/dlls/ucrtbase/tests/cpp.c
+++ b/dlls/ucrtbase/tests/cpp.c
@@ -24,6 +24,8 @@

#include <windef.h>
 #include <winbase.h>
+#include <verrsrc.h>
+#include <dbghelp.h>
 #include "wine/test.h"

typedef unsigned char MSVCRT_bool;
@@ -209,11 +211,15 @@ static void test___unDName(void)
 /*   5 */ {"?meth@Q@@QEGBA?AV1@XZ",
            "public: class Q Q::meth(void)const & ",
            "public: ?? :: ?? ::XZ::V1" /* W10 1507 fails on this :-( */,
-           0x02 /*UNDNAME_NO_MS_KEYWORDS*/},
+           UNDNAME_NO_MS_KEYWORDS},
 /*   6 */ {"?meth@Q@@QEHAA?AV1@XZ",
            "public: class Q Q::meth(void)&& ",
            "public: ?? :: ?? ::XZ::V1" /* W10 1507 fails on this :-( */,
-           0x02 /*UNDNAME_NO_MS_KEYWORDS*/},
+           UNDNAME_NO_MS_KEYWORDS},
+/*   7 */ {"?AU?$my_iter@H$0A@$$V@@",
+           "struct my_iter<int,0>",
+           NULL,
+           UNDNAME_NO_ARGUMENTS},
     };
     unsigned i;
     for (i = 0; i < ARRAY_SIZE(und_tests); i++)