binutils-gdb/gold/testsuite/basic_test.cc

319 lines
5.3 KiB
C++

// basic_test.cc -- a test case for gold
// Copyright (C) 2006-2020 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.
// The goal of this program is to produce as many different types of
// relocations as we can in a stand-alone program that does not use
// TLS. This program is compiled without optimization.
// 1 Code reference to global data.
// 2 Code reference to static data.
// 3 Code reference to BSS data.
// 4 Code reference to offset within global data.
// 5 Code reference to offset within static data.
// 6 Code reference to offset within BSS data.
// 7 Switch statement with a table of destinations.
// 8 Taking the address of a label (a gcc extension).
// 9 Taking the address of a nested function (a gcc extension).
// 10 Data reference to global data.
// 11 Data reference to static data.
// 12 Data reference to BSS data.
// 13 Data reference to offset within global data.
// 14 Data reference to offset within static data.
// 15 Data reference to offset within BSS data.
// 16 Virtual table.
// 17 Inline function.
// 18 Call through pointer to method.
// 19 Initialize variable to pointer to method.
// 20 Global constructor and destructor.
// 1 Code reference to global data.
int t1 = 11;
// 2 Code reference to static data.
static int t2 = 22;
// 3 Code reference to BSS data (initialized after program starts, to
// 33).
int t3;
// 4 Code reference to offset within global data.
char t4[] = "Hello, world";
// 5 Code reference to offset within static data.
static char t5[] = "Hello, world";
// 6 Code reference to offset within BSS data (initialized after
// program starts, to contents of t4).
char t6[13];
// Test cases 1 through 6.
bool
t1_6()
{
return (t1 == 11
&& t2 == 22
&& t3 == 33
&& t4[5] == ','
&& t5[7] == 'w'
&& t6[9] == 'r');
}
// 7 Switch statement with a table of destinations.
int
t7(int i)
{
switch (i)
{
case 0:
return 12;
case 1:
return 34;
case 2:
return 56;
case 3:
return 78;
case 4:
return 90;
case 5:
return 13;
case 6:
return 0;
case 7:
return 57;
case 8:
return 79;
case 9:
return 81;
default:
return 144;
}
}
// 8 Taking the address of a label (a gcc extension).
int
t8(int i)
{
for (int j = 0; j < 10; ++j)
{
void* p;
if (i + j > 6)
p = &&lab1;
else
p = &&lab2;
if (j == 7)
goto *p;
}
return 15;
lab1:
return 0;
lab2:
return 12;
}
// 9 Taking the address of a nested function (a gcc extension).
// Disabled because this is only supported in C, not C++.
int
t9a(int (*pfn)(int))
{
return (*pfn)(10) - 10;
}
int
t9(int i)
{
#if 0
int
t9c(int j)
{
return i + j;
}
return t9a(&t9c);
#else
return i;
#endif
}
// 10 Data reference to global data.
int* t10 = &t1;
// 11 Data reference to static data.
int* t11 = &t2;
// 12 Data reference to BSS data.
int* t12 = &t3;
// 13 Data reference to offset within global data.
char* t13 = &t4[6];
// 14 Data reference to offset within static data.
char* t14 = &t5[8];
// 15 Data reference to offset within BSS data.
char* t15 = &t6[10];
// Test cases 10 through 15.
bool
t10_15()
{
return (*t10 == 11
&& *t11 == 22
&& *t12 == 33
&& *t13 == ' '
&& *t14 == 'o'
&& *t15 == 'l');
}
// 16 Virtual table.
class t16a
{
public:
virtual
~t16a()
{ }
virtual int
t()
{ return 83; }
};
class t16b : public t16a
{
public:
virtual int
t()
{ return 92; }
};
t16b t16v;
bool
t16()
{
return t16v.t() == 92;
}
// 17 Inline function.
inline int
t17a()
{
return 74;
}
bool
t17()
{
return t17a() == 74;
}
// 18 Call through pointer to method.
class t18a
{
public:
int
ta()
{ return 65; }
int
tb()
{ return 90; }
};
t18a t18v;
int
t18f(int (t18a::* p)())
{
return (t18v.*p)();
}
bool
t18()
{
return t18f(&t18a::ta) == 65;
}
// 19 Initialize variable to pointer to method.
int (t18a::* t19v)() = &t18a::tb;
bool
t19()
{
return (t18v.*t19v)() == 90;
}
// 20 Global constructor and destructor.
class t20a
{
public:
t20a()
: i(96)
{ }
~t20a()
{ }
int
get() const
{ return this->i; }
private:
int i;
};
t20a t20v;
bool
t20()
{
return t20v.get() == 96;
}
// Main function. Initialize variables and call test functions.
int
main()
{
t3 = 33;
for (int i = 0; i < 13; ++i)
t6[i] = t4[i];
if (t1_6()
&& t7(6) == 0
&& t8(0) == 0
&& t9(5) == 5
&& t10_15()
&& t16()
&& t17()
&& t18()
&& t19()
&& t20())
return 0;
else
return 1;
}