sequencer: assign only free()able strings to gpg_sign

The gpg_sign member of the replay_opts structure is of type `char *`, meaning that the sequencer deems the string to which gpg_sign points to be under its custody, i.e. it needs to be free()d by the sequencer. Therefore, let's only assign malloc()ed buffers to it. Reported-by: Kaartic Sivaraam <kaartic.sivaraam@gmail.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Schindelin committed Dec 22, 2017 at 12:50 UTC ed1e52822ea4a8493855d9b8be1049d561946137
2 files changed +11 -1
sequencer.c
+1 -1
@@ -160,7 +160,7 @@ static int git_sequencer_config(const char *k, const char *v, void *cb)
160 }
161
162 if (!strcmp(k, "commit.gpgsign")) {
163 - opts->gpg_sign = git_config_bool(k, v) ? "" : NULL;
163 + opts->gpg_sign = git_config_bool(k, v) ? xstrdup("") : NULL;
164 return 0;
165 }
166
t/t3404-rebase-interactive.sh
+10
@@ -1318,6 +1318,16 @@ test_expect_success 'editor saves as CR/LF' '
1318
1319 SQ="'"
1320 test_expect_success 'rebase -i --gpg-sign=<key-id>' '
1321 + test_when_finished "test_might_fail git rebase --abort" &&
1322 + set_fake_editor &&
1323 + FAKE_LINES="edit 1" git rebase -i --gpg-sign="\"S I Gner\"" HEAD^ \
1324 + >out 2>err &&
1325 + test_i18ngrep "$SQ-S\"S I Gner\"$SQ" err
1326 +'
1327 +
1328 +test_expect_success 'rebase -i --gpg-sign=<key-id> overrides commit.gpgSign' '
1329 + test_when_finished "test_might_fail git rebase --abort" &&
1330 + test_config commit.gpgsign true &&
1331 set_fake_editor &&
1332 FAKE_LINES="edit 1" git rebase -i --gpg-sign="\"S I Gner\"" HEAD^ \
1333 >out 2>err &&