From 4a9b204920152c668228a9d43a63be39b0c32f45 Mon Sep 17 00:00:00 2001 From: Matthias Aßhauer Date: Sat, 8 Jan 2022 16:02:30 +0000 Subject: lazyload: use correct calling conventions MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Christoph Reiter reported on the Git for Windows issue tracker[1], that mingw_strftime() imports strftime() from ucrtbase.dll with the wrong calling convention. It should be __cdecl instead of WINAPI, which we always use in DECLARE_PROC_ADDR(). The MSYS2 project encountered cmake sefaults on x86 Windows caused by the same issue in the cmake source. [2] There are no known git crashes that where caused by this, yet, but we should try to prevent them. We import two other non-WINAPI functions via DECLARE_PROC_ADDR(), too. * NtSetSystemInformation() (NTAPI) * GetUserNameExW() (SEC_ENTRY) NTAPI, SEC_ENTRY and WINAPI are all ususally defined as __stdcall, but there are circumstances where they're defined differently. Teach DECLARE_PROC_ADDR() about calling conventions and be explicit about when we want to use which calling convention. Import winnt.h for the definition of NTAPI and sspi.h for SEC_ENTRY near their respective only users. [1] https://github.com/git-for-windows/git/issues/3560 [2] https://github.com/msys2/MINGW-packages/issues/10152 Reported-By: Christoph Reiter Signed-off-by: Matthias Aßhauer Signed-off-by: Junio C Hamano --- t/helper/test-drop-caches.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 't') diff --git a/t/helper/test-drop-caches.c b/t/helper/test-drop-caches.c index 7b4278462b..e37396dd9c 100644 --- a/t/helper/test-drop-caches.c +++ b/t/helper/test-drop-caches.c @@ -3,6 +3,7 @@ #if defined(GIT_WINDOWS_NATIVE) #include "lazyload.h" +#include static int cmd_sync(void) { @@ -86,7 +87,8 @@ static int cmd_dropcaches(void) { HANDLE hProcess = GetCurrentProcess(); HANDLE hToken; - DECLARE_PROC_ADDR(ntdll.dll, DWORD, NtSetSystemInformation, INT, PVOID, ULONG); + DECLARE_PROC_ADDR(ntdll.dll, DWORD, NTAPI, NtSetSystemInformation, INT, PVOID, + ULONG); SYSTEM_MEMORY_LIST_COMMAND command; int status; -- cgit v1.3