Fix segfault on ppc when browsing tree

3 files changed, 3 insertions, 3 deletions

diff --git a/ui-blob.c b/ui-blob.c
index 2ccd31d..89330ce 100644
--- a/ui-blob.c
+++ b/ui-blob.c
@@ -1,79 +1,79 @@
 /* ui-blob.c: show blob content
  *
  * Copyright (C) 2008 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
 
 static char *match_path;
 static unsigned char *matched_sha1;
 
 static int walk_tree(const unsigned char *sha1, const char *base,int baselen,
 	const char *pathname, unsigned mode, int stage, void *cbdata) {
 	if(strncmp(base,match_path,baselen)
 		|| strcmp(match_path+baselen,pathname) )
 		return READ_TREE_RECURSIVE;
 	memmove(matched_sha1,sha1,20);
 	return 0;
 }
 
 void cgit_print_blob(const char *hex, char *path, const char *head)
 {
 
 	unsigned char sha1[20];
 	enum object_type type;
 	char *buf;
 	unsigned long size;
 	struct commit *commit;
 	const char *paths[] = {path, NULL};
 
 	if (hex) {
 		if (get_sha1_hex(hex, sha1)){
 			cgit_print_error(fmt("Bad hex value: %s", hex));
 			return;
 		}
 	} else {
 		if (get_sha1(head,sha1)) {
 			cgit_print_error(fmt("Bad ref: %s", head));
 			return;
 		}
 	}
 
 	type = sha1_object_info(sha1, &size);
 
 	if((!hex) && type == OBJ_COMMIT && path) {
 		commit = lookup_commit_reference(sha1);
 		match_path = path;
 		matched_sha1 = sha1;
-		read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree, NULL);
+		read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
 		type = sha1_object_info(sha1,&size);
 	}
 
 	if (type == OBJ_BAD) {
 		cgit_print_error(fmt("Bad object name: %s", hex));
 		return;
 	}
 
 	buf = read_sha1_file(sha1, &type, &size);
 	if (!buf) {
 		cgit_print_error(fmt("Error reading object %s", hex));
 		return;
 	}
 
 	buf[size] = '\0';
 	ctx.page.mimetype = ctx.qry.mimetype;
 	if (!ctx.page.mimetype) {
 		if (buffer_is_binary(buf, size))
 			ctx.page.mimetype = "application/octet-stream";
 		else
 			ctx.page.mimetype = "text/plain";
 	}
 	ctx.page.filename = path;
 	cgit_print_http_headers(&ctx);
 	write(htmlfd, buf, size);
 }
diff --git a/ui-plain.c b/ui-plain.c
index a4ce077..66cb19c 100644
--- a/ui-plain.c
+++ b/ui-plain.c
@@ -1,94 +1,94 @@
 /* ui-plain.c: functions for output of plain blobs by path
  *
  * Copyright (C) 2008 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 #include "html.h"
 #include "ui-shared.h"
 
 char *curr_rev;
 char *match_path;
 int match;
 
 static void print_object(const unsigned char *sha1, const char *path)
 {
 	enum object_type type;
 	char *buf, *ext;
 	unsigned long size;
 	struct string_list_item *mime;
 
 	type = sha1_object_info(sha1, &size);
 	if (type == OBJ_BAD) {
 		html_status(404, "Not found", 0);
 		return;
 	}
 
 	buf = read_sha1_file(sha1, &type, &size);
 	if (!buf) {
 		html_status(404, "Not found", 0);
 		return;
 	}
 	ctx.page.mimetype = NULL;
 	ext = strrchr(path, '.');
 	if (ext && *(++ext)) {
 		mime = string_list_lookup(ext, &ctx.cfg.mimetypes);
 		if (mime)
 			ctx.page.mimetype = (char *)mime->util;
 	}
 	if (!ctx.page.mimetype) {
 		if (buffer_is_binary(buf, size))
 			ctx.page.mimetype = "application/octet-stream";
 		else
 			ctx.page.mimetype = "text/plain";
 	}
 	ctx.page.filename = fmt("%s", path);
 	ctx.page.size = size;
 	ctx.page.etag = sha1_to_hex(sha1);
 	cgit_print_http_headers(&ctx);
 	html_raw(buf, size);
 	match = 1;
 }
 
 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 		     const char *pathname, unsigned mode, int stage,
 		     void *cbdata)
 {
 	if (S_ISDIR(mode))
 		return READ_TREE_RECURSIVE;
 
 	if (S_ISREG(mode) && !strncmp(base, match_path, baselen) &&
 	    !strcmp(pathname, match_path + baselen))
 		print_object(sha1, pathname);
 
 	return 0;
 }
 
 void cgit_print_plain(struct cgit_context *ctx)
 {
 	const char *rev = ctx->qry.sha1;
 	unsigned char sha1[20];
 	struct commit *commit;
 	const char *paths[] = {ctx->qry.path, NULL};
 
 	if (!rev)
 		rev = ctx->qry.head;
 
 	curr_rev = xstrdup(rev);
 	if (get_sha1(rev, sha1)) {
 		html_status(404, "Not found", 0);
 		return;
 	}
 	commit = lookup_commit_reference(sha1);
 	if (!commit || parse_commit(commit)) {
 		html_status(404, "Not found", 0);
 		return;
 	}
 	match_path = ctx->qry.path;
-	read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree, NULL);
+	read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
 	if (!match)
 		html_status(404, "Not found", 0);
 }
diff --git a/ui-tree.c b/ui-tree.c
index f53ab64..a164767 100644
--- a/ui-tree.c
+++ b/ui-tree.c
@@ -187,99 +187,99 @@ static void ls_head()
 }
 
 static void ls_tail()
 {
 	if (!header)
 		return;
 	html("</table>\n");
 	header = 0;
 }
 
 static void ls_tree(const unsigned char *sha1, char *path)
 {
 	struct tree *tree;
 
 	tree = parse_tree_indirect(sha1);
 	if (!tree) {
 		cgit_print_error(fmt("Not a tree object: %s",
 				     sha1_to_hex(sha1)));
 		return;
 	}
 
 	ls_head();
 	read_tree_recursive(tree, "", 0, 1, NULL, ls_item, NULL);
 	ls_tail();
 }
 
 
 static int walk_tree(const unsigned char *sha1, const char *base, int baselen,
 		     const char *pathname, unsigned mode, int stage,
 		     void *cbdata)
 {
 	static int state;
 	static char buffer[PATH_MAX];
 	char *url;
 
 	if (state == 0) {
 		memcpy(buffer, base, baselen);
 		strcpy(buffer+baselen, pathname);
 		url = cgit_pageurl(ctx.qry.repo, "tree",
 				   fmt("h=%s&amp;path=%s", curr_rev, buffer));
 		html("/");
 		cgit_tree_link(xstrdup(pathname), NULL, NULL, ctx.qry.head,
 			       curr_rev, buffer);
 
 		if (strcmp(match_path, buffer))
 			return READ_TREE_RECURSIVE;
 
 		if (S_ISDIR(mode)) {
 			state = 1;
 			ls_head();
 			return READ_TREE_RECURSIVE;
 		} else {
 			print_object(sha1, buffer, pathname);
 			return 0;
 		}
 	}
 	ls_item(sha1, base, baselen, pathname, mode, stage, NULL);
 	return 0;
 }
 
 
 /*
  * Show a tree or a blob
  *   rev:  the commit pointing at the root tree object
  *   path: path to tree or blob
  */
 void cgit_print_tree(const char *rev, char *path)
 {
 	unsigned char sha1[20];
 	struct commit *commit;
 	const char *paths[] = {path, NULL};
 
 	if (!rev)
 		rev = ctx.qry.head;
 
 	curr_rev = xstrdup(rev);
 	if (get_sha1(rev, sha1)) {
 		cgit_print_error(fmt("Invalid revision name: %s", rev));
 		return;
 	}
 	commit = lookup_commit_reference(sha1);
 	if (!commit || parse_commit(commit)) {
 		cgit_print_error(fmt("Invalid commit reference: %s", rev));
 		return;
 	}
 
 	html("path: <a href='");
 	html_attr(cgit_pageurl(ctx.qry.repo, "tree", fmt("h=%s", rev)));
 	html("'>root</a>");
 
 	if (path == NULL) {
 		ls_tree(commit->tree->object.sha1, NULL);
 		return;
 	}
 
 	match_path = path;
-	read_tree_recursive(commit->tree, NULL, 0, 0, paths, walk_tree, NULL);
+	read_tree_recursive(commit->tree, "", 0, 0, paths, walk_tree, NULL);
 	ls_tail();
 }