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Don't instantiate structures with FAMs.

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Since structures with `flexible array members' are an incomplete datatype ANSI
C99 forbids creating instances of them. This patch removes such an instance
from `diff-lib.c' and replaces it with a pointer to a `struct
combine_diff_path'. Since all neccessary memory is allocated at once the number
of calls to `xmalloc' is not increased.

Signed-off-by: Florian Forster <octo@verplant.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Florian Forster 2006-06-18 17:18:05 +02:00 committed by Junio C Hamano
parent 63f175693e
commit b4b1550315
1 changed files with 22 additions and 19 deletions
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41
diff-lib.c
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@ -34,21 +34,23 @@ int run_diff_files(struct rev_info *revs, int silent_on_removed)
continue;
if (ce_stage(ce)) {
struct {
struct combine_diff_path p;
struct combine_diff_parent filler[5];
} combine;
struct combine_diff_path *dpath;
int num_compare_stages = 0;
size_t path_len;
combine.p.next = NULL;
combine.p.len = ce_namelen(ce);
combine.p.path = xmalloc(combine.p.len + 1);
memcpy(combine.p.path, ce->name, combine.p.len);
combine.p.path[combine.p.len] = 0;
combine.p.mode = 0;
memset(combine.p.sha1, 0, 20);
memset(&combine.p.parent[0], 0,
sizeof(combine.filler));
path_len = ce_namelen(ce);
dpath = xmalloc (combine_diff_path_size (5, path_len));
dpath->path = (char *) &(dpath->parent[5]);
dpath->next = NULL;
dpath->len = path_len;
memcpy(dpath->path, ce->name, path_len);
dpath->path[path_len] = '\0';
dpath->mode = 0;
memset(dpath->sha1, 0, 20);
memset(&(dpath->parent[0]), 0,
sizeof(struct combine_diff_parent)*5);
while (i < entries) {
struct cache_entry *nce = active_cache[i];
@ -64,11 +66,11 @@ int run_diff_files(struct rev_info *revs, int silent_on_removed)
if (2 <= stage) {
int mode = ntohl(nce->ce_mode);
num_compare_stages++;
memcpy(combine.p.parent[stage-2].sha1,
memcpy(dpath->parent[stage-2].sha1,
nce->sha1, 20);
combine.p.parent[stage-2].mode =
dpath->parent[stage-2].mode =
canon_mode(mode);
combine.p.parent[stage-2].status =
dpath->parent[stage-2].status =
DIFF_STATUS_MODIFIED;
}
@ -83,13 +85,14 @@ int run_diff_files(struct rev_info *revs, int silent_on_removed)
i--;
if (revs->combine_merges && num_compare_stages == 2) {
show_combined_diff(&combine.p, 2,
show_combined_diff(dpath, 2,
revs->dense_combined_merges,
revs);
free(combine.p.path);
free(dpath);
continue;
}
free(combine.p.path);
free(dpath);
dpath = NULL;
/*
* Show the diff for the 'ce' if we found the one