[PATCH v2 2/3] offset_1st_component(), dos_drive_prefix() return size_t

[tboegi@web.de]

From: Torsten Bögershausen <tboegi@web.de>

Change the return value for offset_1st_component(),
has_dos_drive_prefix() and skip_dos_drive_prefix from int into size_t,
which is the natural type for length of data in memory.

While at it, remove possible "parameter not used" warnings in for the
non-Windows builds in git-compat-util.h

Signed-off-by: Torsten Bögershausen <tboegi@web.de>
---
 abspath.c             | 2 +-
 compat/mingw-cygwin.c | 6 +++---
 compat/mingw-cygwin.h | 4 ++--
 git-compat-util.h     | 8 +++++---
 setup.c               | 4 ++--
 5 files changed, 13 insertions(+), 11 deletions(-)

diff --git a/abspath.c b/abspath.c
index 9857985329..12055a1d8f 100644
--- a/abspath.c
+++ b/abspath.c
@@ -51,7 +51,7 @@ static void get_next_component(struct strbuf *next, struct strbuf *remaining)
 /* copies root part from remaining to resolved, canonicalizing it on the way */
 static void get_root_part(struct strbuf *resolved, struct strbuf *remaining)
 {
-	int offset = offset_1st_component(remaining->buf);
+	size_t offset = offset_1st_component(remaining->buf);
 
 	strbuf_reset(resolved);
 	strbuf_add(resolved, remaining->buf, offset);
diff --git a/compat/mingw-cygwin.c b/compat/mingw-cygwin.c
index c63d7acb9c..5552c3ac20 100644
--- a/compat/mingw-cygwin.c
+++ b/compat/mingw-cygwin.c
@@ -1,13 +1,13 @@
 #include "../git-compat-util.h"
 
-int mingw_cygwin_skip_dos_drive_prefix(char **path)
+size_t mingw_cygwin_skip_dos_drive_prefix(char **path)
 {
-	int ret = has_dos_drive_prefix(*path);
+	size_t ret = has_dos_drive_prefix(*path);
 	*path += ret;
 	return ret;
 }
 
-int mingw_cygwin_offset_1st_component(const char *path)
+size_t mingw_cygwin_offset_1st_component(const char *path)
 {
 	char *pos = (char *)path;
 
diff --git a/compat/mingw-cygwin.h b/compat/mingw-cygwin.h
index 66ccc909ae..0e8a0c9074 100644
--- a/compat/mingw-cygwin.h
+++ b/compat/mingw-cygwin.h
@@ -1,6 +1,6 @@
 #define has_dos_drive_prefix(path) \
 	(isalpha(*(path)) && (path)[1] == ':' ? 2 : 0)
-int mingw_cygwin_skip_dos_drive_prefix(char **path);
+size_t mingw_cygwin_skip_dos_drive_prefix(char **path);
 #define skip_dos_drive_prefix mingw_cygwin_skip_dos_drive_prefix
 static inline int mingw_cygwin_is_dir_sep(int c)
 {
@@ -16,5 +16,5 @@ static inline char *mingw_cygwin_find_last_dir_sep(const char *path)
 	return ret;
 }
 #define find_last_dir_sep mingw_cygwin_find_last_dir_sep
-int mingw_cygwin_offset_1st_component(const char *path);
+size_t mingw_cygwin_offset_1st_component(const char *path);
 #define offset_1st_component mingw_cygwin_offset_1st_component
diff --git a/git-compat-util.h b/git-compat-util.h
index 7ece969b22..65eaaf0d50 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -355,16 +355,18 @@ static inline int noop_core_config(const char *var, const char *value, void *cb)
 #endif
 
 #ifndef has_dos_drive_prefix
-static inline int git_has_dos_drive_prefix(const char *path)
+static inline size_t git_has_dos_drive_prefix(const char *path)
 {
+	(void)path;
 	return 0;
 }
 #define has_dos_drive_prefix git_has_dos_drive_prefix
 #endif
 
 #ifndef skip_dos_drive_prefix
-static inline int git_skip_dos_drive_prefix(char **path)
+static inline size_t git_skip_dos_drive_prefix(char **path)
 {
+	(void)path;
 	return 0;
 }
 #define skip_dos_drive_prefix git_skip_dos_drive_prefix
@@ -379,7 +381,7 @@ static inline int git_is_dir_sep(int c)
 #endif
 
 #ifndef offset_1st_component
-static inline int git_offset_1st_component(const char *path)
+static inline size_t git_offset_1st_component(const char *path)
 {
 	return is_dir_sep(path[0]);
 }
diff --git a/setup.c b/setup.c
index 1be5037f12..538bc1ff99 100644
--- a/setup.c
+++ b/setup.c
@@ -29,7 +29,7 @@ static int abspath_part_inside_repo(char *path)
 	size_t len;
 	size_t wtlen;
 	char *path0;
-	int off;
+	size_t off;
 	const char *work_tree = get_git_work_tree();
 
 	if (!work_tree)
@@ -800,7 +800,7 @@ static const char *setup_bare_git_dir(struct strbuf *cwd, int offset,
 				      struct repository_format *repo_fmt,
 				      int *nongit_ok)
 {
-	int root_len;
+	size_t root_len;
 
 	if (check_repository_format_gently(".", repo_fmt, nongit_ok))
 		return NULL;
-- 
2.19.0.271.gfe8321ec05