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Fix "unpack-objects --strict"
When unpack-objects is run under the --strict option, objects that have pointers to other objects are verified for the reachability at the end, by calling check_object() on each of them, and letting check_object to walk the reachable objects from them using fsck_walk() recursively. The function however misunderstands the semantics of fsck_walk() function when it makes a call to it, setting itself as the callback. fsck_walk() expects the callback function to return a non-zero value to signal an error (negative value causes an immediate abort, positive value is still an error but allows further checks on sibling objects) and return zero to signal a success. The function however returned 1 on some non error cases, and to cover up this mistake, complained only when fsck_walk() did not detect any error. To fix this double-bug, make the function return zero on all success cases, and also check for non-zero return from fsck_walk() for an error. Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -181,10 +181,10 @@ static void write_cached_object(struct object *obj)
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static int check_object(struct object *obj, int type, void *data)
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{
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if (!obj)
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return 0;
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return 1;
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if (obj->flags & FLAG_WRITTEN)
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return 1;
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return 0;
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if (type != OBJ_ANY && obj->type != type)
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die("object type mismatch");
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@ -195,22 +195,24 @@ static int check_object(struct object *obj, int type, void *data)
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if (type != obj->type || type <= 0)
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die("object of unexpected type");
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obj->flags |= FLAG_WRITTEN;
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return 1;
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return 0;
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}
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if (fsck_object(obj, 1, fsck_error_function))
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die("Error in object");
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if (!fsck_walk(obj, check_object, 0))
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if (fsck_walk(obj, check_object, 0))
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die("Error on reachable objects of %s", sha1_to_hex(obj->sha1));
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write_cached_object(obj);
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return 1;
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return 0;
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}
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static void write_rest(void)
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{
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unsigned i;
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for (i = 0; i < nr_objects; i++)
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for (i = 0; i < nr_objects; i++) {
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if (obj_list[i].obj)
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check_object(obj_list[i].obj, OBJ_ANY, 0);
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}
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}
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static void added_object(unsigned nr, enum object_type type,
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35
t/t5531-deep-submodule-push.sh
Normal file
35
t/t5531-deep-submodule-push.sh
Normal file
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@ -0,0 +1,35 @@
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#!/bin/sh
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test_description='unpack-objects'
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. ./test-lib.sh
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test_expect_success setup '
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mkdir pub.git &&
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GIT_DIR=pub.git git init --bare
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GIT_DIR=pub.git git config receive.fsckobjects true &&
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mkdir work &&
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(
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cd work &&
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git init &&
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mkdir -p gar/bage &&
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(
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cd gar/bage &&
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git init &&
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>junk &&
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git add junk &&
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git commit -m "Initial junk"
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) &&
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git add gar/bage &&
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git commit -m "Initial superproject"
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)
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'
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test_expect_success push '
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(
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cd work &&
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git push ../pub.git master
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)
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'
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test_done
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