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Patrick Steinhardt 791aeddfa2 parse-options: detect mismatches in integer signedness 
It was reported that "t5620-backfill.sh" fails on s390x and sparc64 in a
test that exercises the "--min-batch-size" command line option. The
symptom was that the option didn't seem to have an effect: we didn't
fetch objects with a batch size of 20, but instead fetched all objects
at once.

As it turns out, the root cause is that `--min-batch-size` uses
`OPT_INTEGER()` to parse the command line option. While this macro
expects the caller to pass a pointer to an integer, we instead pass a
pointer to a `size_t`. This coincidentally works on most platforms, but
it breaks apart on the mentioned platforms because they are big endian.

This issue isn't specific to git-backfill(1): there are a couple of
other places where we have the same type confusion going on. This
indicates that the issue really is the interface that the parse-options
subsystem provides -- it is simply too easy to get this wrong as there
isn't any kind of compiler warning, and things just work on the most
common systems.

Address the systemic issue by introducing two new build asserts
`BARF_UNLESS_SIGNED()` and `BARF_UNLESS_UNSIGNED()`. As the names
already hint at, those macros will cause a compiler error when passed a
value that is not signed or unsigned, respectively.

Adapt `OPT_INTEGER()`, `OPT_UNSIGNED()` as well as `OPT_MAGNITUDE()` to
use those asserts. This uncovers a small set of sites where we indeed
have the same bug as in git-backfill(1). Adapt all of them to use the
correct option.

Reported-by: Todd Zullinger <tmz@pobox.com>
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Helped-by: SZEDER Gábor <szeder.dev@gmail.com>
Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 		2025-04-17 08:15:16 -07:00
..
add.c global: trivial conversions to fix `-Wsign-compare` warnings 2024-12-06 20:20:04 +09:00
am.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
annotate.c Merge branch 'jc/a-commands-without-the-repo' 2024-10-25 14:02:36 -04:00
apply.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
archive.c archive: remove the_repository global variable 2024-10-11 09:37:18 -07:00
backfill.c parse-options: detect mismatches in integer signedness 2025-04-17 08:15:16 -07:00
bisect.c global: mark code units that generate warnings with `-Wsign-compare` 2024-12-06 20:20:02 +09:00
blame.c Merge branch 'ps/the-repository' 2025-01-21 08:44:54 -08:00
branch.c Merge branch 'rs/ref-fitler-used-atoms-value-fix' 2025-01-29 14:05:09 -08:00
bugreport.c Merge branch 'ua/os-version-capability' 2025-02-27 15:23:00 -08:00
bundle.c Merge branch 'jt/bundle-fsck' 2024-12-13 07:33:36 -08:00
cat-file.c Merge branch 'ps/build-sign-compare' 2024-12-23 09:32:11 -08:00
check-attr.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
check-ignore.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
check-mailmap.c mailmap: fix check-mailmap with full mailmap line 2025-02-21 18:27:16 -08:00
check-ref-format.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
checkout--worker.c builtins: send usage_with_options() help text to standard output 2025-01-17 13:30:03 -08:00
checkout-index.c builtin/checkout-index: stop using `the_repository` 2025-03-07 16:52:02 -08:00
checkout.c Merge branch 'ps/build-sign-compare' 2024-12-23 09:32:11 -08:00
clean.c global: mark code units that generate warnings with `-Wsign-compare` 2024-12-06 20:20:02 +09:00
clone.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
column.c parse-options: detect mismatches in integer signedness 2025-04-17 08:15:16 -07:00
commit-graph.c progress: stop using `the_repository` 2024-12-18 10:44:30 -08:00
commit-tree.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
commit.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
config.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
count-objects.c packfile: pass down repository to `has_object[_kept]_pack` 2024-12-04 08:21:54 +09:00
credential-cache--daemon.c Merge branch 'mh/credential-cache-authtype-request-fix' 2025-01-28 13:02:24 -08:00
credential-cache.c Merge branch 'rj/cygwin-exit' 2024-11-01 12:53:19 -04:00
credential-store.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
credential.c Merge branch 'jc/show-usage-help' 2025-01-28 13:02:22 -08:00
describe.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
diagnose.c diagnose: stop using `the_repository` 2024-12-18 10:44:31 -08:00
diff-files.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
diff-index.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
diff-pairs.c builtin/diff-pairs: allow explicit diff queue flush 2025-03-03 08:17:47 -08:00
diff-tree.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
diff.c global: mark code units that generate warnings with `-Wsign-compare` 2024-12-06 20:20:02 +09:00
difftool.c difftool: eliminate use of USE_THE_REPOSITORY_VARIABLE 2025-02-06 13:00:21 -08:00
fast-export.c fast-export, fast-import: add support for signed-commits 2025-03-10 13:24:56 -07:00
fast-import.c Merge branch 'cc/signed-fast-export-import' 2025-03-29 16:39:07 +09:00
fetch-pack.c oddballs: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
fetch.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
fmt-merge-msg.c parse-options: introduce precision handling for `OPTION_INTEGER` 2025-04-17 08:15:15 -07:00
for-each-ref.c builtin/for-each-ref: stop using `the_repository` 2025-03-07 16:52:02 -08:00
for-each-repo.c global: trivial conversions to fix `-Wsign-compare` warnings 2024-12-06 20:20:04 +09:00
fsck.c Merge branch 'sj/ref-consistency-checks-more' 2025-03-26 16:26:10 +09:00
fsmonitor--daemon.c builtins: send usage_with_options() help text to standard output 2025-01-17 13:30:03 -08:00
gc.c parse-options: rename `OPT_MAGNITUDE()` to `OPT_UNSIGNED()` 2025-04-17 08:15:15 -07:00
get-tar-commit-id.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
grep.c parse-options: detect mismatches in integer signedness 2025-04-17 08:15:16 -07:00
hash-object.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
help.c pager: stop using `the_repository` 2024-12-18 10:44:30 -08:00
hook.c builtin: pass repository to sub commands 2024-11-26 10:36:08 +09:00
index-pack.c Merge branch 'ps/hash-cleanup' 2025-02-10 10:18:31 -08:00
init-db.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
interpret-trailers.c trailer: spread usage of "trailer_block" language 2024-10-14 12:33:02 -04:00
log.c environment: move access to "core.sharedRepository" into repo settings 2025-02-28 13:54:11 -08:00
ls-files.c builtin/ls-files: stop using `the_repository` 2025-03-07 16:52:01 -08:00
ls-remote.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
ls-tree.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
mailinfo.c mailinfo: stop using `the_repository` 2024-12-18 10:44:31 -08:00
mailsplit.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
merge-base.c commit-reach: use `size_t` to track indices when computing merge bases 2024-12-27 08:12:40 -08:00
merge-file.c global: mark code units that generate warnings with `-Wsign-compare` 2024-12-06 20:20:02 +09:00
merge-index.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
merge-ours.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
merge-recursive.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
merge-tree.c merge-tree: only use basic merge config 2025-02-18 09:52:39 -08:00
merge.c parse-options: introduce precision handling for `OPTION_INTEGER` 2025-04-17 08:15:15 -07:00
mktag.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
mktree.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
multi-pack-index.c parse-options: rename `OPT_MAGNITUDE()` to `OPT_UNSIGNED()` 2025-04-17 08:15:15 -07:00
mv.c global: mark code units that generate warnings with `-Wsign-compare` 2024-12-06 20:20:02 +09:00
name-rev.c global: mark code units that generate warnings with `-Wsign-compare` 2024-12-06 20:20:02 +09:00
notes.c path: drop `git_path()` in favor of `repo_git_path()` 2025-02-28 13:54:11 -08:00
pack-objects.c parse-options: rename `OPT_MAGNITUDE()` to `OPT_UNSIGNED()` 2025-04-17 08:15:15 -07:00
pack-redundant.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
pack-refs.c builtin/pack-refs: stop using `the_repository` 2025-03-07 16:52:01 -08:00
patch-id.c global: adapt callers to use generic hash context helpers 2025-01-31 10:06:11 -08:00
prune-packed.c builtin: remove USE_THE_REPOSITORY for those without the_repository 2024-09-13 14:33:30 -07:00
prune.c progress: stop using `the_repository` 2024-12-18 10:44:30 -08:00
pull.c global: trivial conversions to fix `-Wsign-compare` warnings 2024-12-06 20:20:04 +09:00
push.c remote: rename query_refspecs functions 2025-02-04 09:51:41 -08:00
range-diff.c Merge branch 'js/range-diff-diff-merges' 2024-12-23 09:32:17 -08:00
read-tree.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
rebase.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
receive-pack.c Merge branch 'ps/path-sans-the-repository' 2025-03-05 10:37:43 -08:00
reflog.c diff.h: fix index used to loop through unsigned integer 2024-12-06 20:20:03 +09:00
refs.c Merge branch 'sj/ref-consistency-checks-more' 2025-03-26 16:26:10 +09:00
remote-ext.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
remote-fd.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
remote.c Merge branch 'ps/path-sans-the-repository' 2025-03-05 10:37:43 -08:00
repack.c parse-options: rename `OPT_MAGNITUDE()` to `OPT_UNSIGNED()` 2025-04-17 08:15:15 -07:00
replace.c path: drop `git_pathdup()` in favor of `repo_git_path()` 2025-02-07 09:59:22 -08:00
replay.c parse-options: introduce die_for_incompatible_opt2() 2025-02-06 12:23:54 -08:00
rerere.c rerere: let `rerere_path()` write paths into a caller-provided buffer 2025-02-28 13:54:11 -08:00
reset.c diff.h: fix index used to loop through unsigned integer 2024-12-06 20:20:03 +09:00
rev-list.c rev-list: extend print-info to print missing object type 2025-02-05 09:32:01 -08:00
rev-parse.c path: drop `git_path()` in favor of `repo_git_path()` 2025-02-28 13:54:11 -08:00
revert.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
rm.c global: mark code units that generate warnings with `-Wsign-compare` 2024-12-06 20:20:02 +09:00
send-pack.c builtin/send-pack: stop using `the_repository` 2025-03-07 16:52:01 -08:00
shortlog.c diff.h: fix index used to loop through unsigned integer 2024-12-06 20:20:03 +09:00
show-branch.c parse-options: introduce precision handling for `OPTION_INTEGER` 2025-04-17 08:15:15 -07:00
show-index.c Merge branch 'jc/show-index-h-update' 2025-01-31 09:44:16 -08:00
show-ref.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
sparse-checkout.c global: mark code units that generate warnings with `-Wsign-compare` 2024-12-06 20:20:02 +09:00
stash.c stash: remove merge-recursive.h include 2025-03-17 15:39:03 -07:00
stripspace.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
submodule--helper.c path: refactor `repo_submodule_path()` family of functions 2025-02-07 09:59:22 -08:00
symbolic-ref.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
tag.c parse-options: introduce precision handling for `OPTION_INTEGER` 2025-04-17 08:15:15 -07:00
unpack-file.c oddballs: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
unpack-objects.c global: adapt callers to use generic hash context helpers 2025-01-31 10:06:11 -08:00
update-index.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00
update-ref.c builtin/update-ref: skip ambiguity checks when parsing object IDs 2025-03-12 11:31:17 -07:00
update-server-info.c builtin/update-server-info: remove the_repository global variable 2025-02-10 16:20:21 -08:00
upload-archive.c builtin: send usage() help text to standard output 2025-01-17 13:30:03 -08:00
upload-pack.c serve: stop using `the_repository` 2024-12-18 10:44:30 -08:00
var.c Merge branch 'jc/show-usage-help' 2025-01-28 13:02:22 -08:00
verify-commit.c builtin/verify-commit: stop using `the_repository` 2025-03-07 16:52:01 -08:00
verify-pack.c builtin: remove USE_THE_REPOSITORY_VARIABLE from builtin.h 2024-09-13 14:32:24 -07:00
verify-tag.c builtin/verify-tag: stop using `the_repository` 2025-03-07 16:52:01 -08:00
worktree.c path: drop `git_path()` in favor of `repo_git_path()` 2025-02-28 13:54:11 -08:00
write-tree.c global: use designated initializers for options 2025-04-17 08:15:15 -07:00