Fix sparse warnings

Fix warnings from 'make check'.

 - These files don't include 'builtin.h' causing sparse to complain that
   cmd_* isn't declared:

   builtin/clone.c:364, builtin/fetch-pack.c:797,
   builtin/fmt-merge-msg.c:34, builtin/hash-object.c:78,
   builtin/merge-index.c:69, builtin/merge-recursive.c:22
   builtin/merge-tree.c:341, builtin/mktag.c:156, builtin/notes.c:426
   builtin/notes.c:822, builtin/pack-redundant.c:596,
   builtin/pack-refs.c:10, builtin/patch-id.c:60, builtin/patch-id.c:149,
   builtin/remote.c:1512, builtin/remote-ext.c:240,
   builtin/remote-fd.c:53, builtin/reset.c:236, builtin/send-pack.c:384,
   builtin/unpack-file.c:25, builtin/var.c:75

 - These files have symbols which should be marked static since they're
   only file scope:

   submodule.c:12, diff.c:631, replace_object.c:92, submodule.c:13,
   submodule.c:14, trace.c:78, transport.c:195, transport-helper.c:79,
   unpack-trees.c:19, url.c:3, url.c:18, url.c:104, url.c:117, url.c:123,
   url.c:129, url.c:136, thread-utils.c:21, thread-utils.c:48

 - These files redeclare symbols to be different types:

   builtin/index-pack.c:210, parse-options.c:564, parse-options.c:571,
   usage.c:49, usage.c:58, usage.c:63, usage.c:72

 - These files use a literal integer 0 when they really should use a NULL
   pointer:

   daemon.c:663, fast-import.c:2942, imap-send.c:1072, notes-merge.c:362

While we're in the area, clean up some unused #includes in builtin files
(mostly exec_cmd.h).

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

20 files changed, 22 insertions, 29 deletions

diff --git a/builtin/clone.c b/builtin/clone.c
index 02547adba5..c6e10bb9e9 100644
--- a/builtin/clone.c
+++ b/builtin/clone.c
@@ -8,7 +8,7 @@
  * Clone a repository into a different directory that does not yet exist.
  */
 
-#include "cache.h"
+#include "builtin.h"
 #include "parse-options.h"
 #include "fetch-pack.h"
 #include "refs.h"
diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
index 272bc383d6..ef398620af 100644
--- a/builtin/fetch-pack.c
+++ b/builtin/fetch-pack.c
@@ -1,4 +1,4 @@
-#include "cache.h"
+#include "builtin.h"
 #include "refs.h"
 #include "pkt-line.h"
 #include "commit.h"
diff --git a/builtin/fmt-merge-msg.c b/builtin/fmt-merge-msg.c
index 5189b16c9e..75816329d6 100644
--- a/builtin/fmt-merge-msg.c
+++ b/builtin/fmt-merge-msg.c
@@ -31,7 +31,7 @@ struct src_data {
 	int head_status;
 };
 
-void init_src_data(struct src_data *data)
+static void init_src_data(struct src_data *data)
 {
 	data->branch.strdup_strings = 1;
 	data->tag.strdup_strings = 1;
diff --git a/builtin/hash-object.c b/builtin/hash-object.c
index c90acddcb2..b96f46acf5 100644
--- a/builtin/hash-object.c
+++ b/builtin/hash-object.c
@@ -4,7 +4,7 @@
  * Copyright (C) Linus Torvalds, 2005
  * Copyright (C) Junio C Hamano, 2005
  */
-#include "cache.h"
+#include "builtin.h"
 #include "blob.h"
 #include "quote.h"
 #include "parse-options.h"
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index c7e600db47..5a67c8181e 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -207,7 +207,7 @@ static void parse_pack_header(void)
 static NORETURN void bad_object(unsigned long offset, const char *format,
 		       ...) __attribute__((format (printf, 2, 3)));
 
-static void bad_object(unsigned long offset, const char *format, ...)
+static NORETURN void bad_object(unsigned long offset, const char *format, ...)
 {
 	va_list params;
 	char buf[1024];
diff --git a/builtin/merge-index.c b/builtin/merge-index.c
index 2c4cf5e559..2338832587 100644
--- a/builtin/merge-index.c
+++ b/builtin/merge-index.c
@@ -1,6 +1,5 @@
-#include "cache.h"
+#include "builtin.h"
 #include "run-command.h"
-#include "exec_cmd.h"
 
 static const char *pgm;
 static int one_shot, quiet;
diff --git a/builtin/merge-recursive.c b/builtin/merge-recursive.c
index c33091b3ed..3a64f5d0bd 100644
--- a/builtin/merge-recursive.c
+++ b/builtin/merge-recursive.c
@@ -1,4 +1,4 @@
-#include "cache.h"
+#include "builtin.h"
 #include "commit.h"
 #include "tag.h"
 #include "merge-recursive.h"
diff --git a/builtin/merge-tree.c b/builtin/merge-tree.c
index 9b25ddc979..19917426fb 100644
--- a/builtin/merge-tree.c
+++ b/builtin/merge-tree.c
@@ -1,4 +1,4 @@
-#include "cache.h"
+#include "builtin.h"
 #include "tree-walk.h"
 #include "xdiff-interface.h"
 #include "blob.h"
diff --git a/builtin/mktag.c b/builtin/mktag.c
index 1cb0f3f2a7..d0ccbb2222 100644
--- a/builtin/mktag.c
+++ b/builtin/mktag.c
@@ -1,6 +1,5 @@
-#include "cache.h"
+#include "builtin.h"
 #include "tag.h"
-#include "exec_cmd.h"
 
 /*
  * A signature file has a very simple fixed format: four lines
diff --git a/builtin/notes.c b/builtin/notes.c
index 0aab150c52..a0f310b729 100644
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -423,7 +423,7 @@ void finish_copy_notes_for_rewrite(struct notes_rewrite_cfg *c)
 	free(c);
 }
 
-int notes_copy_from_stdin(int force, const char *rewrite_cmd)
+static int notes_copy_from_stdin(int force, const char *rewrite_cmd)
 {
 	struct strbuf buf = STRBUF_INIT;
 	struct notes_rewrite_cfg *c = NULL;
@@ -819,7 +819,7 @@ static int merge_commit(struct notes_merge_options *o)
 	t = xcalloc(1, sizeof(struct notes_tree));
 	init_notes(t, "NOTES_MERGE_PARTIAL", combine_notes_overwrite, 0);
 
-	o->local_ref = resolve_ref("NOTES_MERGE_REF", sha1, 0, 0);
+	o->local_ref = resolve_ref("NOTES_MERGE_REF", sha1, 0, NULL);
 	if (!o->local_ref)
 		die("Failed to resolve NOTES_MERGE_REF");
 
diff --git a/builtin/pack-redundant.c b/builtin/pack-redundant.c
index 41e1615a28..f5c6afc5dd 100644
--- a/builtin/pack-redundant.c
+++ b/builtin/pack-redundant.c
@@ -6,8 +6,7 @@
 *
 */
 
-#include "cache.h"
-#include "exec_cmd.h"
+#include "builtin.h"
 
 #define BLKSIZE 512
 
diff --git a/builtin/pack-refs.c b/builtin/pack-refs.c
index 091860b2e3..39a9d89fbd 100644
--- a/builtin/pack-refs.c
+++ b/builtin/pack-refs.c
@@ -1,4 +1,4 @@
-#include "cache.h"
+#include "builtin.h"
 #include "parse-options.h"
 #include "pack-refs.h"
 
diff --git a/builtin/patch-id.c b/builtin/patch-id.c
index 49a0472a9b..f821eb3f0b 100644
--- a/builtin/patch-id.c
+++ b/builtin/patch-id.c
@@ -1,5 +1,4 @@
-#include "cache.h"
-#include "exec_cmd.h"
+#include "builtin.h"
 
 static void flush_current_id(int patchlen, unsigned char *id, git_SHA_CTX *c)
 {
@@ -57,7 +56,7 @@ static int scan_hunk_header(const char *p, int *p_before, int *p_after)
 	return 1;
 }
 
-int get_one_patchid(unsigned char *next_sha1, git_SHA_CTX *ctx)
+static int get_one_patchid(unsigned char *next_sha1, git_SHA_CTX *ctx)
 {
 	static char line[1000];
 	int patchlen = 0, found_next = 0;
diff --git a/builtin/remote-ext.c b/builtin/remote-ext.c
index ea71977c83..155e609d68 100644
--- a/builtin/remote-ext.c
+++ b/builtin/remote-ext.c
@@ -1,4 +1,4 @@
-#include "git-compat-util.h"
+#include "builtin.h"
 #include "transport.h"
 #include "run-command.h"
 
diff --git a/builtin/remote-fd.c b/builtin/remote-fd.c
index 1f2467bdb7..08d7121b6d 100644
--- a/builtin/remote-fd.c
+++ b/builtin/remote-fd.c
@@ -1,4 +1,4 @@
-#include "git-compat-util.h"
+#include "builtin.h"
 #include "transport.h"
 
 /*
diff --git a/builtin/remote.c b/builtin/remote.c
index cb26080956..b71ecd228f 100644
--- a/builtin/remote.c
+++ b/builtin/remote.c
@@ -1,4 +1,4 @@
-#include "cache.h"
+#include "builtin.h"
 #include "parse-options.h"
 #include "transport.h"
 #include "remote.h"
diff --git a/builtin/reset.c b/builtin/reset.c
index 5de2bceeec..eb5f98c163 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -7,7 +7,7 @@
  *
  * Copyright (c) 2005, 2006 Linus Torvalds and Junio C Hamano
  */
-#include "cache.h"
+#include "builtin.h"
 #include "tag.h"
 #include "object.h"
 #include "commit.h"
diff --git a/builtin/send-pack.c b/builtin/send-pack.c
index 2cd1c40b70..8b0911c0d2 100644
--- a/builtin/send-pack.c
+++ b/builtin/send-pack.c
@@ -1,4 +1,4 @@
-#include "cache.h"
+#include "builtin.h"
 #include "commit.h"
 #include "refs.h"
 #include "pkt-line.h"
diff --git a/builtin/unpack-file.c b/builtin/unpack-file.c
index 608590ada8..19200291a2 100644
--- a/builtin/unpack-file.c
+++ b/builtin/unpack-file.c
@@ -1,6 +1,4 @@
-#include "cache.h"
-#include "blob.h"
-#include "exec_cmd.h"
+#include "builtin.h"
 
 static char *create_temp_file(unsigned char *sha1)
 {
diff --git a/builtin/var.c b/builtin/var.c
index 0744bb8318..99d068a532 100644
--- a/builtin/var.c
+++ b/builtin/var.c
@@ -3,8 +3,7 @@
  *
  * Copyright (C) Eric Biederman, 2005
  */
-#include "cache.h"
-#include "exec_cmd.h"
+#include "builtin.h"
 
 static const char var_usage[] = "git var (-l | <variable>)";