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call uselocale() before freelocale() to make sure that g_local_key has a valid locale.

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For tests that call uselocale(), the locale is stored in the
g_userlocale_key thread-specific key. If freelocale() is called later,
then g_uselocal_key points to a deleted pointer. CTS eventually calls
vfprintf to print the result, which calls MB_CUR_MAX and MB_CUR_MAX
accesses the deleted locale stored in g_uselocale_key, causing unpredictable
errors.

Fixed the tests by calling uselocale() with the old locale before
calling freelocale.

Bug: 17299565
Change-Id: I87efa2a9b16999a11d587f68d3aeedcbe6ac8a2c
This commit is contained in:
Wally Yau
2014-08-26 09:47:23 -07:00
committed by Elliott Hughes
parent 84d0683a82
commit 8a46cf0fcf
2 changed files with 4 additions and 2 deletions
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3
tests/locale_test.cpp
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@@ -114,11 +114,12 @@ TEST(locale, mb_cur_max) {
locale_t cloc = newlocale(LC_ALL, "C", 0);
locale_t cloc_utf8 = newlocale(LC_ALL, "C.UTF-8", 0);
uselocale(cloc);
locale_t old_locale = uselocale(cloc);
ASSERT_EQ(1U, MB_CUR_MAX);
uselocale(cloc_utf8);
ASSERT_EQ(4U, MB_CUR_MAX);
uselocale(old_locale);
freelocale(cloc);
freelocale(cloc_utf8);
}