~ chicken-core (chicken-5) f6574719593ae57df59cbd4a28fcb7eb49961194

commit f6574719593ae57df59cbd4a28fcb7eb49961194
Author:     Peter Bex <peter@more-magic.net>
AuthorDate: Mon Aug 30 12:20:03 2021 +0200
Commit:     felix <felix@call-with-current-continuation.org>
CommitDate: Tue Aug 31 10:27:36 2021 +0200

    Drop custom opendir/readdir implementation in Windows
    
    Windows doesn't have these functions, but MinGW provides
    them as part of its crt library.
    
    Our own stub implementation had some issues which caused
    an error to trigger a loop which resulted in a hanging
    process when running chicken-install -update-db
    
    Signed-off-by: felix <felix@call-with-current-continuation.org>

diff --git a/NEWS b/NEWS
index c30c4395..00e79659 100644
--- a/NEWS
+++ b/NEWS
@@ -3,7 +3,8 @@
 - Core libraries
   - The srfi-17 module now exports the `getter-with-setter` and `setter`
     procedures, not just the set! macro (thanks to Lassi Kortela)
-
+  - Fix hang in chicken-install -update-db on Windows (thanks to Mark
+    Fisher for reporting and Jani Hakala for debugging and patch).
 
 5.3.0rc1
 
diff --git a/file.scm b/file.scm
index 18ce00f1..56e4c909 100644
--- a/file.scm
+++ b/file.scm
@@ -65,86 +65,8 @@
 # define C_mkdir(str)       C_fix(mkdir(C_c_string(str)))
 #endif
 
-#if !defined(_WIN32) || defined(__CYGWIN__)
-# include <sys/types.h>
-# include <dirent.h>
-#else
-struct dirent
-{
-    char *              d_name;
-};
-
-typedef struct
-{
-    struct _finddata_t  fdata;
-    int                 handle;
-    struct dirent       current;
-} DIR;
-
-static DIR * C_fcall
-opendir(const char *name)
-{
-    int name_len = strlen(name);
-    int what_len = name_len + 3;
-    DIR *dir = (DIR *)malloc(sizeof(DIR));
-    char *what;
-    if (!dir)
-    {
-	errno = ENOMEM;
-	return NULL;
-    }
-    what = (char *)malloc(what_len);
-    if (!what)
-    {
-	free(dir);
-	errno = ENOMEM;
-	return NULL;
-    }
-    C_strlcpy(what, name, what_len);
-    if (strchr("\\/", name[name_len - 1]))
-	C_strlcat(what, "*", what_len);
-    else
-	C_strlcat(what, "\\*", what_len);
-
-    dir->handle = _findfirst(what, &dir->fdata);
-    if (dir->handle == -1)
-    {
-	free(what);
-	free(dir);
-	return NULL;
-    }
-    dir->current.d_name = NULL; /* as the first-time indicator */
-    free(what);
-    return dir;
-}
-
-static int C_fcall
-closedir(DIR * dir)
-{
-    if (dir)
-    {
-	int res = _findclose(dir->handle);
-	free(dir);
-	return res;
-    }
-    return -1;
-}
-
-static struct dirent * C_fcall
-readdir(DIR * dir)
-{
-    if (dir)
-    {
-	if (!dir->current.d_name /* first time after opendir */
-	     || _findnext(dir->handle, &dir->fdata) != -1)
-	{
-	    dir->current.d_name = dir->fdata.name;
-	    return &dir->current;
-	}
-    }
-    return NULL;
-}
-#endif
+#include <sys/types.h>
+#include <dirent.h>
 
 #define C_opendir(s,h)      C_set_block_item(h, 0, (C_word) opendir(C_c_string(s)))
 #define C_readdir(h,e)      C_set_block_item(e, 0, (C_word) readdir((DIR *)C_block_item(h, 0)))