diff options
Diffstat (limited to 'libc/test/src/stdlib/StrfromTest.h')
| -rw-r--r-- | libc/test/src/stdlib/StrfromTest.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/libc/test/src/stdlib/StrfromTest.h b/libc/test/src/stdlib/StrfromTest.h index e82c944..fd2e0f12 100644 --- a/libc/test/src/stdlib/StrfromTest.h +++ b/libc/test/src/stdlib/StrfromTest.h @@ -8,6 +8,8 @@ #include "src/__support/CPP/type_traits.h" #include "src/__support/FPUtil/FPBits.h" +#include "test/UnitTest/ErrnoCheckingTest.h" +#include "test/UnitTest/ErrnoSetterMatcher.h" #include "test/UnitTest/Test.h" #define ASSERT_STREQ_LEN(actual_written, actual_str, expected_str) \ @@ -15,7 +17,7 @@ EXPECT_STREQ(actual_str, expected_str); template <typename InputT> -class StrfromTest : public LIBC_NAMESPACE::testing::Test { +class StrfromTest : public LIBC_NAMESPACE::testing::ErrnoCheckingTest { static constexpr bool is_single_prec = LIBC_NAMESPACE::cpp::is_same<InputT, float>::value; @@ -481,6 +483,16 @@ public: written = func(buff, 10, "%A", -ld_nan); ASSERT_STREQ_LEN(written, buff, "-NAN"); } + + void charsWrittenOverflow(FunctionT func) { + char buff[100]; + // Trigger an overflow in the return value of strfrom by writing more than + // INT_MAX bytes. + int result = func(buff, sizeof(buff), "%.2147483647f", 1.0f); + + EXPECT_LT(result, 0); + ASSERT_ERRNO_FAILURE(); + } }; #define STRFROM_TEST(InputType, name, func) \ @@ -501,4 +513,7 @@ public: TEST_F(LlvmLibc##name##Test, InsufficientBufferSize) { \ insufficentBufsize(func); \ } \ - TEST_F(LlvmLibc##name##Test, InfAndNanValues) { infNanValues(func); } + TEST_F(LlvmLibc##name##Test, InfAndNanValues) { infNanValues(func); } \ + TEST_F(LlvmLibc##name##Test, CharsWrittenOverflow) { \ + charsWrittenOverflow(func); \ + } |