Use "-Wall -O2" for the compiler to get more warnings.

And fix up the warnings that it pointed out. Let's keep the tree
clean from early on.

Not that the code is very beautiful anyway ;)

diff --git a/Makefile b/Makefile
index a6bba79ba1f46a1bbf7773449c3bd2bb9bf48e8b..6a0a1c958fa2a1a7020c958e1f7337bd3b86a9f8 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-CFLAGS=-g
+CFLAGS=-g -O3 -Wall
 CC=gcc
 
 PROG=update-cache show-diff init-db write-tree read-tree commit-tree cat-file

diff --git a/cat-file.c b/cat-file.c
index 3071672c6ce2ffb7c1c7d43c1a728f8e020e296b..3829fb6097ad9840cca7654f0b8a718100d590ac 100644 (file)
--- a/cat-file.c
+++ b/cat-file.c
@@ -11,7 +11,6 @@ int main(int argc, char **argv)
        char type[20];
        void *buf;
        unsigned long size;
-       int fd;
 
        if (argc != 3 || get_sha1_hex(argv[2], sha1))
                usage("cat-file: cat-file [-t | tagname] <sha1>");

diff --git a/init-db.c b/init-db.c
index bc65086368b44f37a8c7e47734e5b0dffed8873c..1fcef0b373ccec8693ffab22adfe94f4f3c5b86d 100644 (file)
--- a/init-db.c
+++ b/init-db.c
@@ -8,7 +8,7 @@
 int main(int argc, char **argv)
 {
        char *sha1_dir = getenv(DB_ENVIRONMENT), *path;
-       int len, i, fd;
+       int len, i;
 
        if (mkdir(".dircache", 0700) < 0) {
                perror("unable to create .dircache");
@@ -25,7 +25,7 @@ int main(int argc, char **argv)
        if (sha1_dir) {
                struct stat st;
                if (!stat(sha1_dir, &st) < 0 && S_ISDIR(st.st_mode))
-                       return;
+                       return 0;
                fprintf(stderr, "DB_ENVIRONMENT set to bad directory %s: ", sha1_dir);
        }
 

diff --git a/read-cache.c b/read-cache.c
index b151981c1b3d15da75411c2af856958d06138c30..60a0b5b2e78f403047f3a5e2cac1c5c7965091a1 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -89,7 +89,7 @@ void * read_sha1_file(unsigned char *sha1, char *type, unsigned long *size)
        z_stream stream;
        char buffer[8192];
        struct stat st;
-       int i, fd, ret, bytes;
+       int fd, ret, bytes;
        void *map, *buf;
        char *filename = sha1_file_name(sha1);
 
@@ -173,7 +173,7 @@ int write_sha1_file(char *buf, unsigned len)
 int write_sha1_buffer(unsigned char *sha1, void *buf, unsigned int size)
 {
        char *filename = sha1_file_name(sha1);
-       int i, fd;
+       int fd;
 
        fd = open(filename, O_WRONLY | O_CREAT | O_EXCL, 0666);
        if (fd < 0)
@@ -228,6 +228,7 @@ int read_cache(void)
        if (fd < 0)
                return (errno == ENOENT) ? 0 : error("open failed");
 
+       size = 0; // avoid gcc warning
        map = (void *)-1;
        if (!fstat(fd, &st)) {
                map = NULL;

diff --git a/read-tree.c b/read-tree.c
index 3785e259756b4b1f396baabcff07a9bcb6f75ddc..af486ff33f6f66323b25efc5ce9e3540d5f5bab9 100644 (file)
--- a/read-tree.c
+++ b/read-tree.c
@@ -72,7 +72,6 @@ static int unpack(unsigned char *sha1)
 
 int main(int argc, char **argv)
 {
-       int fd;
        unsigned char sha1[20];
 
        if (argc != 2)

diff --git a/show-diff.c b/show-diff.c
index e7aa60b4ab92ab2d0fe6afaeb5657757d0401225..3c6d4f98b48634d63554821b8d23592e359f8c91 100644 (file)
--- a/show-diff.c
+++ b/show-diff.c
@@ -60,7 +60,6 @@ int main(int argc, char **argv)
                struct stat st;
                struct cache_entry *ce = active_cache[i];
                int n, changed;
-               unsigned int mode;
                unsigned long size;
                char type[20];
                void *new;

diff --git a/update-cache.c b/update-cache.c
index 0bcd5d408191333e70f54fbf28676a7e3696ced5..413e09d48fa0aad26ef4863a47e1c75c08844d81 100644 (file)
--- a/update-cache.c
+++ b/update-cache.c
@@ -50,6 +50,7 @@ static int remove_file_from_cache(char *path)
                if (pos < active_nr)
                        memmove(active_cache + pos, active_cache + pos + 1, (active_nr - pos - 1) * sizeof(struct cache_entry *));
        }
+       return 0;
 }
 
 static int add_cache_entry(struct cache_entry *ce)
@@ -250,4 +251,5 @@ int main(int argc, char **argv)
                return 0;
 out:
        unlink(".dircache/index.lock");
+       return 0;
 }

diff --git a/write-tree.c b/write-tree.c
index 012eeeff1b5dd90149ebcd9eed139698c9fab035..6e531b40a84914cf1b37e12f8629fecbec0ae041 100644 (file)
--- a/write-tree.c
+++ b/write-tree.c
@@ -31,7 +31,7 @@ static int prepend_integer(char *buffer, unsigned val, int i)
 
 int main(int argc, char **argv)
 {
-       unsigned long size, offset, val;
+       unsigned long size, offset;
        int i, entries = read_cache();
        char *buffer;