git: 01bdf9acd258 - stable/13 - libsa: make single bit bitfields unsigned to avoid clang 16 warning

The branch stable/13 has been updated by dim:

URL: https://cgit.FreeBSD.org/src/commit/?id=01bdf9acd2581b92ad0d7215c7cd744a2533346b

commit 01bdf9acd2581b92ad0d7215c7cd744a2533346b
Author:     Dimitry Andric <dim@FreeBSD.org>
AuthorDate: 2023-04-17 16:15:57 +0000
Commit:     Dimitry Andric <dim@FreeBSD.org>
CommitDate: 2023-04-22 08:58:48 +0000

    libsa: make single bit bitfields unsigned to avoid clang 16 warning
    
    Clang 16 introduced a warning about single bit bitfields in structs,
    which is triggered by a declaration in libsa's tftp.c:
    
        stand/libsa/tftp.c:382:20: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
                                        h->islastblock = 1;     /* very short file */
                                                       ^ ~
        stand/libsa/tftp.c:432:18: error: implicit truncation from 'int' to a one-bit wide bit-field changes value from 1 to -1 [-Werror,-Wsingle-bit-bitfield-constant-conversion]
                        h->islastblock = 1;     /* EOF */
                                       ^ ~
    
    Signed one-bit bitfields can only have values -1 and 0, but the intent
    here is to use the field as a boolean, so make it unsigned.
    
    MFC after:      3 days
    
    (cherry picked from commit 1a3ccb8f1552977e1b264e3b89d1fba8e717dad8)
---
 stand/libsa/tftp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/stand/libsa/tftp.c b/stand/libsa/tftp.c
index 903537b4bbe5..f1e056da3561 100644
--- a/stand/libsa/tftp.c
+++ b/stand/libsa/tftp.c
@@ -106,8 +106,8 @@ static int	is_open = 0;
 struct tftp_handle {
 	struct iodesc  *iodesc;
 	int		currblock;	/* contents of lastdata */
-	int		islastblock:1;	/* flag */
-	int		tries:4;	/* number of read attempts */
+	unsigned int	islastblock:1;	/* flag */
+	unsigned int	tries:4;	/* number of read attempts */
 	int		validsize;
 	int		off;
 	char		*path;	/* saved for re-requests */