ladybird/Tests/LibC/TestLibCString.cpp
Daniel Bertalan ea52ba9fdc LibC: Set saved_str to null in strtok_r if no tokens were found
If we do not do this, the next call to strtok_r will start tokenizing
(and possibly modifying!) the memory pointed to by `saved_ptr`.
2022-03-08 23:30:47 +01:00

32 lines
875 B
C++

/*
* Copyright (c) 2021, Gunnar Beutner <gbeutner@serenityos.org>
* Copyright (c) 2022, Daniel Bertalan <dani@danielbertalan.dev>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibTest/TestCase.h>
#include <errno.h>
#include <string.h>
TEST_CASE(strerror_r_basic)
{
EXPECT_EQ(strerror_r(1000, nullptr, 0), EINVAL);
EXPECT_EQ(strerror_r(EFAULT, nullptr, 0), ERANGE);
char buf[64];
EXPECT_EQ(strerror_r(EFAULT, buf, sizeof(buf)), 0);
EXPECT_EQ(strcmp(buf, "Bad address"), 0);
}
TEST_CASE(strtok_r_delimiters_only)
{
char dummy[] = "a;";
char input[] = ";;;;;;";
char* saved_str = dummy;
EXPECT_EQ(strtok_r(input, ";", &saved_str), nullptr);
EXPECT_EQ(strtok_r(nullptr, ";", &saved_str), nullptr);
// The string to which `saved_str` initially points to shouldn't be modified.
EXPECT_EQ(strcmp(dummy, "a;"), 0);
}