On Mon, Feb 04, 2013 at 02:20:06AM +0800, Tay Ray Chuan wrote:
> On Sun, Feb 3, 2013 at 10:37 PM, John Keeping <john@xxxxxxxxxxxxx> wrote:
> > When compiling combine-diff.c, clang 3.2 says:
> >
> > combine-diff.c:1006:19: warning: adding 'int' to a string does not
> > append to the string [-Wstring-plus-int]
> > prefix = COLONS + offset;
> > ~~~~~~~^~~~~~~~
> > combine-diff.c:1006:19: note: use array indexing to silence this warning
> > prefix = COLONS + offset;
> > ^
> > & [ ]
> >
> > Suppress this by making the suggested change.
> >
> > Signed-off-by: John Keeping <john@xxxxxxxxxxxxx>
> > ---
> > combine-diff.c | 2 +-
> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/combine-diff.c b/combine-diff.c
> > index bb1cc96..dba4748 100644
> > --- a/combine-diff.c
> > +++ b/combine-diff.c
> > @@ -1003,7 +1003,7 @@ static void show_raw_diff(struct combine_diff_path *p, int num_parent, struct re
> > offset = strlen(COLONS) - num_parent;
> > if (offset < 0)
> > offset = 0;
> > - prefix = COLONS + offset;
> > + prefix = &COLONS[offset];
> >
> > /* Show the modes */
> > for (i = 0; i < num_parent; i++) {
>
> Hmm, does
>
> prefix = (const char *) COLONS + offset;
>
> suppress the warning?
It does, but it turns out that the following also suppresses the
warning:
-- >8 --
diff --git a/combine-diff.c b/combine-diff.c
index bb1cc96..a07d329 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -982,7 +982,7 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
free(sline);
}
-#define COLONS "::::::::::::::::::::::::::::::::"
+static const char COLONS[] = "::::::::::::::::::::::::::::::::";
static void show_raw_diff(struct combine_diff_path *p, int num_parent, struct rev_info *rev)
{
I think that's a nicer change than the original suggestion.
John
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