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xo-alloc2: utest: check guard bytes

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This commit is contained in:
Roland Conybeare 2025-12-16 23:00:00 -05:00
commit 7ae1a34ed3
3 changed files with 104 additions and 2 deletions
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61
utest/random_allocs.cpp
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@ -100,11 +100,68 @@ namespace utest {
AllocInfo info = mm.alloc_info(mem);
REQUIRE_ORFAIL(ok_flag, catch_flag, info.is_valid());
REQUIRE_ORFAIL(ok_flag, catch_flag, info.size() == padding::with_padding(z));
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.size() == padding::with_padding(z));
/* age isn't configured -> 0 = sentinel */
REQUIRE_ORFAIL(ok_flag, catch_flag, info.age() == 0);
/* tseq isn't confrigured -> 0 = sentinel */
/* tseq isn't configured -> 0 = sentinel */
REQUIRE_ORFAIL(ok_flag, catch_flag, info.tseq() == 0);
if ((info.p_config_->guard_z_ > 0)
|| info.guard_lo().first
|| info.guard_lo().second
|| info.guard_hi().first
|| info.guard_hi().second)
{
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_lo().first != nullptr);
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_lo().second != nullptr);
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_lo().first + info.guard_z()
== info.guard_lo().second);
for (const byte * p = info.guard_lo().first;
p != info.guard_lo().second; ++p)
{
REQUIRE_ORFAIL(ok_flag, catch_flag, (char)*p == info.guard_byte());
}
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_hi().first != nullptr);
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_hi().second != nullptr);
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_hi().first + info.guard_z()
== info.guard_hi().second);
for (const byte * p = info.guard_hi().first;
p != info.guard_hi().second; ++p)
{
REQUIRE_ORFAIL(ok_flag, catch_flag, (char)*p == info.guard_byte());
}
} else {
/* control here only if all of:
* - guard_z is zero
* - guard_lo empty
* - guard_hi empty
*/
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_lo().first == nullptr);
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_lo().second == nullptr);
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_hi().first == nullptr);
REQUIRE_ORFAIL(ok_flag, catch_flag,
info.guard_hi().second == nullptr);
}
}
return true;