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git/t/t0070-fundamental.sh
Ævar Arnfjörð Bjarmason 03267e8656 commit: discard partial cache before (re-)reading it
The read_cache() in prepare_to_commit() would end up clobbering the
pointer we had for a previously populated "the_index.cache_tree" in
the very common case of "git commit" stressed by e.g. the tests being
changed here.

We'd populate "the_index.cache_tree" by calling
"update_main_cache_tree" in prepare_index(), but would not end up with
a "fully prepared" index. What constitutes an existing index is
clearly overly fuzzy, here we'll check "active_nr" (aka
"the_index.cache_nr"), but our "the_index.cache_tree" might have been
malloc()'d already.

Thus the code added in 11c8a74a64 (commit: write cache-tree data when
writing index anyway, 2011-12-06) would end up allocating the
"cache_tree", and would interact here with code added in
7168624c35 (Do not generate full commit log message if it is not
going to be used, 2007-11-28). The result was a very common memory
leak.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
2022-11-21 12:32:48 +09:00

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#!/bin/sh
test_description='check that the most basic functions work
Verify wrappers and compatibility functions.
'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'character classes (isspace, isalpha etc.)' '
test-tool ctype
'
test_expect_success 'mktemp to nonexistent directory prints filename' '
test_must_fail test-tool mktemp doesnotexist/testXXXXXX 2>err &&
grep "doesnotexist/test" err
'
test_expect_success POSIXPERM,SANITY 'mktemp to unwritable directory prints filename' '
mkdir cannotwrite &&
test_when_finished "chmod +w cannotwrite" &&
chmod -w cannotwrite &&
test_must_fail test-tool mktemp cannotwrite/testXXXXXX 2>err &&
grep "cannotwrite/test" err
'
test_expect_success 'git_mkstemps_mode does not fail if fd 0 is not open' '
git commit --allow-empty -m message <&-
'
test_expect_success 'check for a bug in the regex routines' '
# if this test fails, re-build git with NO_REGEX=1
test-tool regex --bug
'
test_expect_success 'incomplete sideband messages are reassembled' '
test-tool pkt-line send-split-sideband >split-sideband &&
test-tool pkt-line receive-sideband <split-sideband 2>err &&
grep "Hello, world" err
'
test_expect_success 'eof on sideband message is reported' '
printf 1234 >input &&
test-tool pkt-line receive-sideband <input 2>err &&
test_i18ngrep "unexpected disconnect" err
'
test_expect_success 'missing sideband designator is reported' '
printf 0004 >input &&
test-tool pkt-line receive-sideband <input 2>err &&
test_i18ngrep "missing sideband" err
'
test_done