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//===-- flags_test.cpp ------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "tests/scudo_unit_test.h"
#include "flags.h"
#include "flags_parser.h"
#include <string.h>
static const char FlagName[] = "flag_name";
static const char FlagDesc[] = "flag description";
template <typename T>
static void testFlag(scudo::FlagType Type, T StartValue, const char *Env,
T FinalValue) {
scudo::FlagParser Parser;
T Flag = StartValue;
Parser.registerFlag(FlagName, FlagDesc, Type, &Flag);
Parser.parseString(Env);
EXPECT_EQ(FinalValue, Flag);
// Reporting unrecognized flags is needed to reset them.
scudo::reportUnrecognizedFlags();
}
TEST(ScudoFlagsTest, BooleanFlags) {
testFlag(scudo::FlagType::FT_bool, false, "flag_name=1", true);
testFlag(scudo::FlagType::FT_bool, false, "flag_name=yes", true);
testFlag(scudo::FlagType::FT_bool, false, "flag_name='yes'", true);
testFlag(scudo::FlagType::FT_bool, false, "flag_name=true", true);
testFlag(scudo::FlagType::FT_bool, true, "flag_name=0", false);
testFlag(scudo::FlagType::FT_bool, true, "flag_name=\"0\"", false);
testFlag(scudo::FlagType::FT_bool, true, "flag_name=no", false);
testFlag(scudo::FlagType::FT_bool, true, "flag_name=false", false);
testFlag(scudo::FlagType::FT_bool, true, "flag_name='false'", false);
}
TEST(ScudoFlagsDeathTest, BooleanFlags) {
EXPECT_DEATH(testFlag(scudo::FlagType::FT_bool, false, "flag_name", true),
"expected '='");
EXPECT_DEATH(testFlag(scudo::FlagType::FT_bool, false, "flag_name=", true),
"invalid value for bool option: ''");
EXPECT_DEATH(testFlag(scudo::FlagType::FT_bool, false, "flag_name=2", true),
"invalid value for bool option: '2'");
EXPECT_DEATH(testFlag(scudo::FlagType::FT_bool, false, "flag_name=-1", true),
"invalid value for bool option: '-1'");
EXPECT_DEATH(testFlag(scudo::FlagType::FT_bool, false, "flag_name=on", true),
"invalid value for bool option: 'on'");
}
TEST(ScudoFlagsTest, IntFlags) {
testFlag(scudo::FlagType::FT_int, -11, nullptr, -11);
testFlag(scudo::FlagType::FT_int, -11, "flag_name=0", 0);
testFlag(scudo::FlagType::FT_int, -11, "flag_name='0'", 0);
testFlag(scudo::FlagType::FT_int, -11, "flag_name=42", 42);
testFlag(scudo::FlagType::FT_int, -11, "flag_name=-42", -42);
testFlag(scudo::FlagType::FT_int, -11, "flag_name=\"-42\"", -42);
// Unrecognized flags are ignored.
testFlag(scudo::FlagType::FT_int, -11, "--flag_name=42", -11);
testFlag(scudo::FlagType::FT_int, -11, "zzzzzzz=42", -11);
}
TEST(ScudoFlagsDeathTest, IntFlags) {
EXPECT_DEATH(testFlag(scudo::FlagType::FT_int, -11, "flag_name", 0),
"expected '='");
EXPECT_DEATH(testFlag(scudo::FlagType::FT_int, -11, "flag_name=42U", 0),
"invalid value for int option");
}
static void testTwoFlags(const char *Env, bool ExpectedFlag1,
const int ExpectedFlag2, const char *Name1 = "flag1",
const char *Name2 = "flag2") {
scudo::FlagParser Parser;
bool Flag1 = !ExpectedFlag1;
int Flag2;
Parser.registerFlag(Name1, FlagDesc, scudo::FlagType::FT_bool, &Flag1);
Parser.registerFlag(Name2, FlagDesc, scudo::FlagType::FT_int, &Flag2);
Parser.parseString(Env);
EXPECT_EQ(ExpectedFlag1, Flag1);
EXPECT_EQ(Flag2, ExpectedFlag2);
// Reporting unrecognized flags is needed to reset them.
scudo::reportUnrecognizedFlags();
}
TEST(ScudoFlagsTest, MultipleFlags) {
testTwoFlags("flag1=1 flag2=42", true, 42);
testTwoFlags("flag2=-1 flag1=0", false, -1);
testTwoFlags("flag1=false:flag2=1337", false, 1337);
testTwoFlags("flag2=42:flag1=yes", true, 42);
testTwoFlags("flag2=42\nflag1=yes", true, 42);
testTwoFlags("flag2=42\r\nflag1=yes", true, 42);
testTwoFlags("flag2=42\tflag1=yes", true, 42);
}
TEST(ScudoFlagsTest, CommonSuffixFlags) {
testTwoFlags("flag=1 other_flag=42", true, 42, "flag", "other_flag");
testTwoFlags("other_flag=42 flag=1", true, 42, "flag", "other_flag");
}
TEST(ScudoFlagsTest, AllocatorFlags) {
scudo::FlagParser Parser;
scudo::Flags Flags;
scudo::registerFlags(&Parser, &Flags);
Flags.setDefaults();
Flags.dealloc_type_mismatch = false;
Flags.delete_size_mismatch = false;
Flags.quarantine_max_chunk_size = 1024;
Parser.parseString("dealloc_type_mismatch=true:delete_size_mismatch=true:"
"quarantine_max_chunk_size=2048");
EXPECT_TRUE(Flags.dealloc_type_mismatch);
EXPECT_TRUE(Flags.delete_size_mismatch);
EXPECT_EQ(2048, Flags.quarantine_max_chunk_size);
}
#ifdef GWP_ASAN_HOOKS
TEST(ScudoFlagsTest, GWPASanFlags) {
scudo::FlagParser Parser;
scudo::Flags Flags;
scudo::registerFlags(&Parser, &Flags);
Flags.setDefaults();
Flags.GWP_ASAN_Enabled = false;
Parser.parseString("GWP_ASAN_Enabled=true:GWP_ASAN_SampleRate=1:"
"GWP_ASAN_InstallSignalHandlers=false");
EXPECT_TRUE(Flags.GWP_ASAN_Enabled);
EXPECT_FALSE(Flags.GWP_ASAN_InstallSignalHandlers);
EXPECT_EQ(1, Flags.GWP_ASAN_SampleRate);
}
#endif // GWP_ASAN_HOOKS
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