[newlib-cygwin] Cygwin: utils: change 3rd readlink param to size_t

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=37f4fea07c87973408e4ad231ba6c8bd57982b03

commit 37f4fea07c87973408e4ad231ba6c8bd57982b03
Author: Corinna Vinschen <corinna@vinschen.de>
Date:   Wed Aug 8 09:25:12 2018 +0200

    Cygwin: utils: change 3rd readlink param to size_t
    
    Avoid gcc warnings
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/utils/path.cc | 8 ++++----
 winsup/utils/path.h  | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/winsup/utils/path.cc b/winsup/utils/path.cc
index fcc5c07..17ea352 100644
--- a/winsup/utils/path.cc
+++ b/winsup/utils/path.cc
@@ -181,7 +181,7 @@ out:
 
 /* Assumes is_symlink(fh) is true */
 bool
-readlink (HANDLE fh, char *path, int maxlen)
+readlink (HANDLE fh, char *path, size_t maxlen)
 {
   DWORD rv;
   char *buf, *cp;
@@ -225,7 +225,7 @@ readlink (HANDLE fh, char *path, int maxlen)
 	    return false;
 	  wcstombs (path, (wchar_t *) (cp + 2), wlen + 1);
 	}
-      else if (len + 1 > maxlen)
+      else if ((size_t) (len + 1) > maxlen)
 	return false;
       else
 	memcpy (path, cp, len);
@@ -243,7 +243,7 @@ readlink (HANDLE fh, char *path, int maxlen)
 	    return false;
 	  wcstombs (path, (wchar_t *) (cp + 2), wlen + 1);
 	}
-      else if (fi.nFileSizeLow - strlen (SYMLINK_COOKIE) > (unsigned) maxlen)
+      else if (fi.nFileSizeLow - strlen (SYMLINK_COOKIE) > maxlen)
 	return false;
       else
 	strcpy (path, cp);
@@ -778,7 +778,7 @@ rel_vconcat (const char *cwd, const char *s, va_list v)
       cwd = pathbuf;
     }
 
-  int max_len = 0;
+  size_t max_len = 0;
   mnt_t *m, *match = NULL;
 
   for (m = mount_table; m->posix; m++)
diff --git a/winsup/utils/path.h b/winsup/utils/path.h
index 53ef4d2..ee7c28a 100644
--- a/winsup/utils/path.h
+++ b/winsup/utils/path.h
@@ -17,7 +17,7 @@ char *cygpath (const char *s, ...);
 char *cygpath_rel (const char *cwd, const char *s, ...);
 bool is_exe (HANDLE);
 bool is_symlink (HANDLE);
-bool readlink (HANDLE, char *, int);
+bool readlink (HANDLE, char *, size_t);
 int get_word (HANDLE, int);
 int get_dword (HANDLE, int);
 bool from_fstab_line (mnt_t *m, char *line, bool user);