From ed8ad7e2e29d4adf342964f6cc15d6b84f62c700 Mon Sep 17 00:00:00 2001 From: Jim Meyering Date: Sun, 11 Mar 2007 19:49:08 +0100 Subject: [PATCH] I like the idea of the new ':/' notation, and gave it a try, but all I could get was a segfault. It was dereferencing a NULL commit list. Fix below. With it, this example now works: $ mkdir .j; cd .j; touch f $ git-init; git-add f; git-commit -mc f; echo x >f; git-commit -md f $ git-diff -p :/c :/d diff --git a/f b/f index e69de29..587be6b 100644 --- a/f +++ b/f @@ -0,0 +1 @@ +x Signed-off-by: Jim Meyering Signed-off-by: Junio C Hamano --- sha1_name.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/sha1_name.c b/sha1_name.c index 31812d3d26..6b8b67b4db 100644 --- a/sha1_name.c +++ b/sha1_name.c @@ -605,7 +605,7 @@ static int handle_one_ref(const char *path, int get_sha1_oneline(const char *prefix, unsigned char *sha1) { struct commit_list *list = NULL, *backup = NULL, *l; - struct commit *commit; + struct commit *commit = NULL; if (prefix[0] == '!') { if (prefix[1] != '!') @@ -617,8 +617,12 @@ int get_sha1_oneline(const char *prefix, unsigned char *sha1) for_each_ref(handle_one_ref, &list); for (l = list; l; l = l->next) commit_list_insert(l->item, &backup); - while ((commit = pop_most_recent_commit(&list, ONELINE_SEEN))) { + while (list) { char *p; + + commit = pop_most_recent_commit(&list, ONELINE_SEEN); + if (!commit) + break; parse_object(commit->object.sha1); if (!commit->buffer || !(p = strstr(commit->buffer, "\n\n"))) continue;