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[PATCH v2 5/9] branch: handle config errors when unsetting upstream

From
Patrick Steinhardt <ps@pks.im>
Date
Jan 28, 2016, 09:00 UTC
Message-ID
<1453971637-22273-6-git-send-email-ps@pks.im>
In-Reply-To
<1453971637-22273-1-git-send-email-ps@pks.im>

When we try to unset upstream configurations we do not check return codes for the `git_config_set` functions. As those may indicate that we were unable to unset the respective configuration we may exit successfully without any error message while in fact the upstream configuration was not unset.

Fix this by dying with an error message when we cannot unset the configuration.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
 builtin/branch.c  | 4 ++--
 t/t3200-branch.sh | 7 +++++++
 2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/builtin/branch.c b/builtin/branch.c
index 3f6c825..0978287 100644
--- a/builtin/branch.c
+++ b/builtin/branch.c
@@ -791,10 +791,10 @@ int cmd_branch(int argc, const char **argv, const char *prefix)
 			die(_("Branch '%s' has no upstream information"), branch->name);
 
 		strbuf_addf(&buf, "branch.%s.remote", branch->name);
-		git_config_set_multivar(buf.buf, NULL, NULL, 1);
+		git_config_set_multivar_or_die(buf.buf, NULL, NULL, 1);
 		strbuf_reset(&buf);
 		strbuf_addf(&buf, "branch.%s.merge", branch->name);
-		git_config_set_multivar(buf.buf, NULL, NULL, 1);
+		git_config_set_multivar_or_die(buf.buf, NULL, NULL, 1);
 		strbuf_release(&buf);
 	} else if (argc > 0 && argc <= 2) {
 		struct branch *branch = branch_get(argv[0]);
diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index dd776b3..a897248 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -473,6 +473,13 @@ test_expect_success '--unset-upstream should fail if given a non-existent branch
 	test_must_fail git branch --unset-upstream i-dont-exist
 '
 
+test_expect_success '--unset-upstream should fail if config is locked' '
+	test_when_finished "rm -f .git/config.lock" &&
+	git branch --set-upstream-to locked &&
+	>.git/config.lock &&
+	test_must_fail git branch --unset-upstream
+'
+
 test_expect_success 'test --unset-upstream on HEAD' '
 	git branch my14 &&
 	test_config branch.master.remote foo &&
-- 
2.7.0
Previous: Patrick SteinhardtNext: Patrick Steinhardt
Message 6 of 13 in “Handle errors when setting configs”
  1. 0/9 Handle errors when setting configsPatrick Steinhardt, Jan 28, 2016
  2. 1/9 config: introduce set_or_die wrappersPatrick Steinhardt, Jan 28, 2016
  3. 2/9 branch: return error code for install_branch_configPatrick Steinhardt, Jan 28, 2016
  4. 3/9 remote: handle config errors in set_urlPatrick Steinhardt, Jan 28, 2016
  5. 4/9 clone: handle config errors in cmd_clonePatrick Steinhardt, Jan 28, 2016
  6. 5/9 branch: handle config errors when unsetting upstreamPatrick Steinhardt, Jan 28, 2016
  7. 6/9 init-db: handle config errorsPatrick Steinhardt, Jan 28, 2016
  8. 7/9 sequencer: handle config errors when saving optsPatrick Steinhardt, Jan 28, 2016
  9. 8/9 submodule--helper: handle config errorsPatrick Steinhardt, Jan 28, 2016
  10. 9/9 compat: die when unable to set core.precomposeunicodePatrick Steinhardt, Jan 28, 2016
  11. Jeff KingJan 29, 2016
  12. Junio C HamanoJan 29, 2016
  13. Patrick SteinhardtJan 30, 2016

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