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authorJonathan Nieder <jrnieder@gmail.com>2012-02-02 05:06:01 -0600
committerJunio C Hamano <gitster@pobox.com>2012-02-02 11:05:18 -0800
commit3f790003a356284d92beff6965985917e58b6707 (patch)
tree543bae56c4a1efc12bd1c6569fbf4753b88b9c7b
parent150f75467cdd6eaf581d22175bb377399c62893a (diff)
downloadgit-jn/svn-fe.tar.gz
vcs-svn: suppress a -Wtype-limits warningjn/svn-fe
On 32-bit architectures with 64-bit file offsets, gcc 4.3 and earlier produce the following warning: CC vcs-svn/sliding_window.o vcs-svn/sliding_window.c: In function `check_overflow': vcs-svn/sliding_window.c:36: warning: comparison is always false \ due to limited range of data type The warning appears even when gcc is run without any warning flags (this is gcc bug 12963). In later versions the same warning can be reproduced with -Wtype-limits, which is implied by -Wextra. On 64-bit architectures it really is possible for a size_t not to be representable as an off_t so the check this is warning about is not actually redundant. But even false positives are distracting. Avoid the warning by making the "len" argument to check_overflow a uintmax_t; no functional change intended. Reported-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
-rw-r--r--vcs-svn/sliding_window.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/vcs-svn/sliding_window.c b/vcs-svn/sliding_window.c
index c6c2effd30..ec2707c9c4 100644
--- a/vcs-svn/sliding_window.c
+++ b/vcs-svn/sliding_window.c
@@ -31,15 +31,15 @@ static int read_to_fill_or_whine(struct line_buffer *file,
return 0;
}
-static int check_offset_overflow(off_t offset, size_t len)
+static int check_offset_overflow(off_t offset, uintmax_t len)
{
if (len > maximum_signed_value_of_type(off_t))
return error("unrepresentable length in delta: "
- "%"PRIuMAX" > OFF_MAX", (uintmax_t) len);
+ "%"PRIuMAX" > OFF_MAX", len);
if (signed_add_overflows(offset, (off_t) len))
return error("unrepresentable offset in delta: "
"%"PRIuMAX" + %"PRIuMAX" > OFF_MAX",
- (uintmax_t) offset, (uintmax_t) len);
+ (uintmax_t) offset, len);
return 0;
}