8e0f70033b
This change removes all obvious useless if-before-free tests.
E.g., it replaces code like this:
if (some_expression)
free (some_expression);
with the now-equivalent:
free (some_expression);
It is equivalent not just because POSIX has required free(NULL)
to work for a long time, but simply because it has worked for
so long that no reasonable porting target fails the test.
Here's some evidence from nearly 1.5 years ago:
http://www.winehq.org/pipermail/wine-patches/2006-October/031544.html
FYI, the change below was prepared by running the following:
git ls-files -z | xargs -0 \
perl -0x3b -pi -e \
's/\bif\s*\(\s*(\S+?)(?:\s*!=\s*NULL)?\s*\)\s+(free\s*\(\s*\1\s*\))/$2/s'
Note however, that it doesn't handle brace-enclosed blocks like
"if (x) { free (x); }". But that's ok, since there were none like
that in git sources.
Beware: if you do use the above snippet, note that it can
produce syntactically invalid C code. That happens when the
affected "if"-statement has a matching "else".
E.g., it would transform this
if (x)
free (x);
else
foo ();
into this:
free (x);
else
foo ();
There were none of those here, either.
If you're interested in automating detection of the useless
tests, you might like the useless-if-before-free script in gnulib:
[it *does* detect brace-enclosed free statements, and has a --name=S
option to make it detect free-like functions with different names]
http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=build-aux/useless-if-before-free
Addendum:
Remove one more (in imap-send.c), spotted by Jean-Luc Herren <jlh@gmx.ch>.
Signed-off-by: Jim Meyering <meyering@redhat.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
#include "cache.h"
|
|
#include "walker.h"
|
|
|
|
int cmd_http_fetch(int argc, const char **argv, const char *prefix)
|
|
{
|
|
struct walker *walker;
|
|
int commits_on_stdin = 0;
|
|
int commits;
|
|
const char **write_ref = NULL;
|
|
char **commit_id;
|
|
const char *url;
|
|
char *rewritten_url = NULL;
|
|
int arg = 1;
|
|
int rc = 0;
|
|
int get_tree = 0;
|
|
int get_history = 0;
|
|
int get_all = 0;
|
|
int get_verbosely = 0;
|
|
int get_recover = 0;
|
|
|
|
git_config(git_default_config);
|
|
|
|
while (arg < argc && argv[arg][0] == '-') {
|
|
if (argv[arg][1] == 't') {
|
|
get_tree = 1;
|
|
} else if (argv[arg][1] == 'c') {
|
|
get_history = 1;
|
|
} else if (argv[arg][1] == 'a') {
|
|
get_all = 1;
|
|
get_tree = 1;
|
|
get_history = 1;
|
|
} else if (argv[arg][1] == 'v') {
|
|
get_verbosely = 1;
|
|
} else if (argv[arg][1] == 'w') {
|
|
write_ref = &argv[arg + 1];
|
|
arg++;
|
|
} else if (!strcmp(argv[arg], "--recover")) {
|
|
get_recover = 1;
|
|
} else if (!strcmp(argv[arg], "--stdin")) {
|
|
commits_on_stdin = 1;
|
|
}
|
|
arg++;
|
|
}
|
|
if (argc < arg + 2 - commits_on_stdin) {
|
|
usage("git-http-fetch [-c] [-t] [-a] [-v] [--recover] [-w ref] [--stdin] commit-id url");
|
|
return 1;
|
|
}
|
|
if (commits_on_stdin) {
|
|
commits = walker_targets_stdin(&commit_id, &write_ref);
|
|
} else {
|
|
commit_id = (char **) &argv[arg++];
|
|
commits = 1;
|
|
}
|
|
url = argv[arg];
|
|
if (url && url[strlen(url)-1] != '/') {
|
|
rewritten_url = malloc(strlen(url)+2);
|
|
strcpy(rewritten_url, url);
|
|
strcat(rewritten_url, "/");
|
|
url = rewritten_url;
|
|
}
|
|
|
|
walker = get_http_walker(url);
|
|
walker->get_tree = get_tree;
|
|
walker->get_history = get_history;
|
|
walker->get_all = get_all;
|
|
walker->get_verbosely = get_verbosely;
|
|
walker->get_recover = get_recover;
|
|
|
|
rc = walker_fetch(walker, commits, commit_id, write_ref, url);
|
|
|
|
if (commits_on_stdin)
|
|
walker_targets_free(commits, commit_id, write_ref);
|
|
|
|
if (walker->corrupt_object_found) {
|
|
fprintf(stderr,
|
|
"Some loose object were found to be corrupt, but they might be just\n"
|
|
"a false '404 Not Found' error message sent with incorrect HTTP\n"
|
|
"status code. Suggest running git-fsck.\n");
|
|
}
|
|
|
|
walker_free(walker);
|
|
|
|
free(rewritten_url);
|
|
|
|
return rc;
|
|
}
|