krb5 commit [krb5-1.18]: Fix argument type errors on Windows

https://github.com/krb5/krb5/commit/aed3e2deaa8b53efbc777394a52d1f25cdf1a649
commit aed3e2deaa8b53efbc777394a52d1f25cdf1a649
Author: Greg Hudson <[email protected]>
Date:   Mon Apr 26 14:46:31 2021 -0400

    Fix argument type errors on Windows
    
    Fix three Windows-specific argument type errors, including a crash bug
    in the default replay cache type.  Change the compiler flags to treat
    several argument type warnings as errors.
    
    The replay cache bug was reported by Thomas Wagner.
    
    (cherry picked from commit 65b21aee6ab5e7d0851302b98647261c15c71c96)
    
    ticket: 9005
    version_fixed: 1.18.4

 src/clients/kpasswd/kpasswd.c    |    3 ++-
 src/config/win-pre.in            |    6 +++++-
 src/lib/krb5/rcache/rc_dfl.c     |    2 +-
 src/util/support/dir_filenames.c |    2 +-
 4 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/src/clients/kpasswd/kpasswd.c b/src/clients/kpasswd/kpasswd.c
index 8dbe611..bf2a5bd 100644
--- a/src/clients/kpasswd/kpasswd.c
+++ b/src/clients/kpasswd/kpasswd.c
@@ -37,7 +37,8 @@ get_name_from_passwd_file(char *program_name, krb5_context context,
 }
 #else /* HAVE_PWD_H */
 static void
-get_name_from_passwd_file(krb5_context context, krb5_principal *me)
+get_name_from_passwd_file(char *program_name, krb5_context context,
+                          krb5_principal *me)
 {
     fprintf(stderr, _("Unable to identify user\n"));
     exit(1);
diff --git a/src/config/win-pre.in b/src/config/win-pre.in
index a3fb46e..0e696e2 100644
--- a/src/config/win-pre.in
+++ b/src/config/win-pre.in
@@ -118,7 +118,11 @@ CC=cl
 
 PDB_OPTS=-Fd$(OUTPRE)\ -FD
 CPPFLAGS=-I$(top_srcdir)\include -I$(top_srcdir)\include\krb5 $(DNSFLAGS) -DWIN32_LEAN_AND_MEAN -DKRB5_DEPRECATED=1 -DKRB5_PRIVATE -D_CRT_SECURE_NO_DEPRECATE $(KFWFLAGS) $(TIME_T_FLAGS)
-CCOPTS=-nologo /EHsc /W3 $(PDB_OPTS) $(DLL_FILE_DEF)
+# Treat the following warnings as errors:
+#  4020: too many actual parameters
+#  4024: different types for formal and actual parameter
+#  4047: different levels of indirection
+CCOPTS=-nologo /EHsc /W3 /we4020 /we4024 /we4047 $(PDB_OPTS) $(DLL_FILE_DEF)
 LOPTS=-nologo -incremental:no -manifest
 
 !if  ("$(BITS)" == "64" )
diff --git a/src/lib/krb5/rcache/rc_dfl.c b/src/lib/krb5/rcache/rc_dfl.c
index 1a82676..9c5182a 100644
--- a/src/lib/krb5/rcache/rc_dfl.c
+++ b/src/lib/krb5/rcache/rc_dfl.c
@@ -67,7 +67,7 @@ open_file(krb5_context context, int *fd_out)
             return ret;
     }
 
-    *fd_out = open(O_CREAT | O_RDWR | O_BINARY, 0600);
+    *fd_out = open(fname, O_CREAT | O_RDWR | O_BINARY, 0600);
     ret = (*fd_out < 0) ? errno : 0;
     if (ret) {
         k5_setmsg(context, ret, "%s (filename: %s)",
diff --git a/src/util/support/dir_filenames.c b/src/util/support/dir_filenames.c
index 9312b02..efcdc7f 100644
--- a/src/util/support/dir_filenames.c
+++ b/src/util/support/dir_filenames.c
@@ -87,7 +87,7 @@ k5_dir_filenames(const char *dirname, char ***fnames_out)
         return ENOENT;
 
     do {
-        if (add_filename(&fnames, &n_fnames, &ffd.cFileName) != 0) {
+        if (add_filename(&fnames, &n_fnames, ffd.cFileName) != 0) {
             k5_free_filenames(fnames);
             FindClose(handle);
             return ENOMEM;