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[libc] Added isValidState to CharacterConverter class to ensure a provided mbstate is valid (#145564)

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Added isValidState to CharacterConverter class to ensure a provided
mbstate is valid
This commit is contained in:
Uzair Nawaz
2025-06-25 12:06:22 -07:00
committed by GitHub
parent 20f56d1409
commit 1c56d101a2
3 changed files with 58 additions and 3 deletions
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42
libc/test/src/__support/wchar/utf32_to_8_test.cpp
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@@ -186,3 +186,45 @@ TEST(LlvmLibcCharacterConverterUTF32To8Test, CantPushMidConversion) {
int err = cr.push(utf32);
ASSERT_EQ(err, -1);
}
TEST(LlvmLibcCharacterConverterUTF32To8Test, InvalidState) {
LIBC_NAMESPACE::internal::mbstate s1;
LIBC_NAMESPACE::internal::CharacterConverter c1(&s1);
ASSERT_TRUE(c1.isValidState());
LIBC_NAMESPACE::internal::mbstate s2{0, 2, 0};
LIBC_NAMESPACE::internal::CharacterConverter c2(&s2);
ASSERT_FALSE(c2.isValidState());
LIBC_NAMESPACE::internal::mbstate s3{0x7f, 1, 1};
LIBC_NAMESPACE::internal::CharacterConverter c3(&s3);
ASSERT_TRUE(c3.isValidState());
LIBC_NAMESPACE::internal::mbstate s4{0x80, 1, 1};
LIBC_NAMESPACE::internal::CharacterConverter c4(&s4);
ASSERT_FALSE(c4.isValidState());
LIBC_NAMESPACE::internal::mbstate s5{0x7ff, 1, 2};
LIBC_NAMESPACE::internal::CharacterConverter c5(&s5);
ASSERT_TRUE(c5.isValidState());
LIBC_NAMESPACE::internal::mbstate s6{0x800, 1, 2};
LIBC_NAMESPACE::internal::CharacterConverter c6(&s6);
ASSERT_FALSE(c6.isValidState());
LIBC_NAMESPACE::internal::mbstate s7{0xffff, 1, 3};
LIBC_NAMESPACE::internal::CharacterConverter c7(&s7);
ASSERT_TRUE(c7.isValidState());
LIBC_NAMESPACE::internal::mbstate s8{0x10000, 1, 3};
LIBC_NAMESPACE::internal::CharacterConverter c8(&s8);
ASSERT_FALSE(c8.isValidState());
LIBC_NAMESPACE::internal::mbstate s9{0x10ffff, 1, 4};
LIBC_NAMESPACE::internal::CharacterConverter c9(&s9);
ASSERT_TRUE(c9.isValidState());
LIBC_NAMESPACE::internal::mbstate s10{0x110000, 1, 2};
LIBC_NAMESPACE::internal::CharacterConverter c10(&s10);
ASSERT_FALSE(c10.isValidState());
LIBC_NAMESPACE::internal::mbstate s11{0, 0, 5};
LIBC_NAMESPACE::internal::CharacterConverter c11(&s11);
ASSERT_FALSE(c11.isValidState());
}