John Keeping <john@xxxxxxxxxxxxx> writes:
> A quick search turned up the original thread where this feature was
> added to Clang [1]. It seems that it does find genuine bugs where
> people try to log values by doing:
>
> log("failed to handle error: " + errno);
To be perfectly honest, anybody who writes such a code should be
sent back to school before trying to touch out code ever again ;-).
It is not even valid Python, Perl nor Java, I would think.
> Are you happy to change COLONS to a const char[] instead of a #define?
Happy? Not really.
It could be a good change for entirely different reason. We will
save space if we ever need to use it in multiple places. But the
entire "COLONS + offset" thing was a hack we did, knowing that it
will break when we end up showing a muiti-way diff for more than 32
blobs.
If we were to be touching that area of code, I'd rather see a change
to make it more robust against such a corner case. If it results in
squelching misguided clang warnings against programmers who should
not be writing in C, that is a nice side effect, but I loathe to see
any change whose primary purpose is to squelch pointless warnings.
combine-diff.c | 21 +++++++--------------
1 file changed, 7 insertions(+), 14 deletions(-)
diff --git a/combine-diff.c b/combine-diff.c
index bb1cc96..7f6187f 100644
--- a/combine-diff.c
+++ b/combine-diff.c
@@ -982,14 +982,10 @@ static void show_patch_diff(struct combine_diff_path *elem, int num_parent,
free(sline);
}
-#define COLONS "::::::::::::::::::::::::::::::::"
-
static void show_raw_diff(struct combine_diff_path *p, int num_parent, struct rev_info *rev)
{
struct diff_options *opt = &rev->diffopt;
- int i, offset;
- const char *prefix;
- int line_termination, inter_name_termination;
+ int line_termination, inter_name_termination, i;
line_termination = opt->line_termination;
inter_name_termination = '\t';
@@ -1000,17 +996,14 @@ static void show_raw_diff(struct combine_diff_path *p, int num_parent, struct re
show_log(rev);
if (opt->output_format & DIFF_FORMAT_RAW) {
- offset = strlen(COLONS) - num_parent;
- if (offset < 0)
- offset = 0;
- prefix = COLONS + offset;
+ /* As many colons as there are parents */
+ for (i = 0; i < num_parent; i++)
+ putchar(':');
/* Show the modes */
- for (i = 0; i < num_parent; i++) {
- printf("%s%06o", prefix, p->parent[i].mode);
- prefix = " ";
- }
- printf("%s%06o", prefix, p->mode);
+ for (i = 0; i < num_parent; i++)
+ printf("%06o ", p->parent[i].mode);
+ printf("%06o", p->mode);
/* Show sha1's */
for (i = 0; i < num_parent; i++)
--
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