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util: abort for a negative zalloc() size

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Nothing in libinput needs large buffers, so if we ever get something that
large, we probably passed a negative number to zalloc.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2018-06-11 11:13:03 +10:00
parent 24a19dd167
commit 8865d4a29d
2 changed files with 13 additions and 0 deletions
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3
src/libinput-util.h
View file

@ -141,6 +141,9 @@ zalloc(size_t size)
{
void *p;
if ((ssize_t)size < 0)
abort();
p = calloc(1, size);
if (!p)
abort();

10
test/litest-selftest.c
View file

@ -344,6 +344,12 @@ START_TEST(ck_double_ge_fails)
}
END_TEST
START_TEST(zalloc_overflow)
{
zalloc(-1);
}
END_TEST
static Suite *
litest_assert_macros_suite(void)
{
@ -408,6 +414,10 @@ litest_assert_macros_suite(void)
tcase_add_exit_test(tc, ck_double_ge_fails, 1);
suite_add_tcase(s, tc);
tc = tcase_create("zalloc ");
tcase_add_test_raise_signal(tc, zalloc_overflow, SIGABRT);
suite_add_tcase(s, tc);
return s;
}