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libcxx: update to LLVM 18

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release/18.x branch, commit 78b99c73ee4b96fe9ce0e294d4632326afb2db42

This adds the flag `-D_LIBCPP_HARDENING_MODE` which is determined based
on the Zig optimization mode.

This commit also fixes libunwind, libcxx, and libcxxabi to properly
report sub compilation errors.
This commit is contained in:
Andrew Kelley
2024-04-26 15:33:29 -07:00
parent bc6ebc6f25
commit 06ee65af9e
902 changed files with 80977 additions and 107576 deletions
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181
lib/libcxx/src/random.cpp vendored
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@@ -9,8 +9,8 @@
#include <__config>
#if defined(_LIBCPP_USING_WIN32_RANDOM)
// Must be defined before including stdlib.h to enable rand_s().
# define _CRT_RAND_S
// Must be defined before including stdlib.h to enable rand_s().
# define _CRT_RAND_S
#endif // defined(_LIBCPP_USING_WIN32_RANDOM)
#include <__system_error/system_error.h>
@@ -22,148 +22,115 @@
#include <stdlib.h>
#if defined(_LIBCPP_USING_GETENTROPY)
# include <sys/random.h>
# include <sys/random.h>
#elif defined(_LIBCPP_USING_DEV_RANDOM)
# include <fcntl.h>
# include <unistd.h>
# if __has_include(<sys/ioctl.h>) && __has_include(<linux/random.h>)
# include <sys/ioctl.h>
# include <linux/random.h>
# endif
# include <fcntl.h>
# include <unistd.h>
# if __has_include(<sys/ioctl.h>) && __has_include(<linux/random.h>)
# include <linux/random.h>
# include <sys/ioctl.h>
# endif
#elif defined(_LIBCPP_USING_NACL_RANDOM)
# include <nacl/nacl_random.h>
# include <nacl/nacl_random.h>
#elif defined(_LIBCPP_USING_FUCHSIA_CPRNG)
# include <zircon/syscalls.h>
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
#if defined(_LIBCPP_USING_GETENTROPY)
random_device::random_device(const string& __token)
{
if (__token != "/dev/urandom")
__throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
random_device::random_device(const string& __token) {
if (__token != "/dev/urandom")
__throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
}
random_device::~random_device()
{
}
random_device::~random_device() {}
unsigned
random_device::operator()()
{
unsigned r;
size_t n = sizeof(r);
int err = getentropy(&r, n);
if (err)
__throw_system_error(errno, "random_device getentropy failed");
return r;
unsigned random_device::operator()() {
unsigned r;
size_t n = sizeof(r);
int err = getentropy(&r, n);
if (err)
__throw_system_error(errno, "random_device getentropy failed");
return r;
}
#elif defined(_LIBCPP_USING_ARC4_RANDOM)
random_device::random_device(const string&)
{
}
random_device::random_device(const string&) {}
random_device::~random_device()
{
}
random_device::~random_device() {}
unsigned
random_device::operator()()
{
return arc4random();
}
unsigned random_device::operator()() { return arc4random(); }
#elif defined(_LIBCPP_USING_DEV_RANDOM)
random_device::random_device(const string& __token)
: __f_(open(__token.c_str(), O_RDONLY))
{
if (__f_ < 0)
__throw_system_error(errno, ("random_device failed to open " + __token).c_str());
random_device::random_device(const string& __token) : __f_(open(__token.c_str(), O_RDONLY)) {
if (__f_ < 0)
__throw_system_error(errno, ("random_device failed to open " + __token).c_str());
}
random_device::~random_device()
{
close(__f_);
}
random_device::~random_device() { close(__f_); }
unsigned
random_device::operator()()
{
unsigned r;
size_t n = sizeof(r);
char* p = reinterpret_cast<char*>(&r);
while (n > 0)
{
ssize_t s = read(__f_, p, n);
if (s == 0)
__throw_system_error(ENODATA, "random_device got EOF");
if (s == -1)
{
if (errno != EINTR)
__throw_system_error(errno, "random_device got an unexpected error");
continue;
}
n -= static_cast<size_t>(s);
p += static_cast<size_t>(s);
unsigned random_device::operator()() {
unsigned r;
size_t n = sizeof(r);
char* p = reinterpret_cast<char*>(&r);
while (n > 0) {
ssize_t s = read(__f_, p, n);
if (s == 0)
__throw_system_error(ENODATA, "random_device got EOF");
if (s == -1) {
if (errno != EINTR)
__throw_system_error(errno, "random_device got an unexpected error");
continue;
}
return r;
n -= static_cast<size_t>(s);
p += static_cast<size_t>(s);
}
return r;
}
#elif defined(_LIBCPP_USING_NACL_RANDOM)
random_device::random_device(const string& __token)
{
if (__token != "/dev/urandom")
__throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
int error = nacl_secure_random_init();
if (error)
__throw_system_error(error, ("random device failed to open " + __token).c_str());
random_device::random_device(const string& __token) {
if (__token != "/dev/urandom")
__throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
int error = nacl_secure_random_init();
if (error)
__throw_system_error(error, ("random device failed to open " + __token).c_str());
}
random_device::~random_device()
{
}
random_device::~random_device() {}
unsigned
random_device::operator()()
{
unsigned r;
size_t n = sizeof(r);
size_t bytes_written;
int error = nacl_secure_random(&r, n, &bytes_written);
if (error != 0)
__throw_system_error(error, "random_device failed getting bytes");
else if (bytes_written != n)
__throw_runtime_error("random_device failed to obtain enough bytes");
return r;
unsigned random_device::operator()() {
unsigned r;
size_t n = sizeof(r);
size_t bytes_written;
int error = nacl_secure_random(&r, n, &bytes_written);
if (error != 0)
__throw_system_error(error, "random_device failed getting bytes");
else if (bytes_written != n)
__throw_runtime_error("random_device failed to obtain enough bytes");
return r;
}
#elif defined(_LIBCPP_USING_WIN32_RANDOM)
random_device::random_device(const string& __token)
{
if (__token != "/dev/urandom")
__throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
random_device::random_device(const string& __token) {
if (__token != "/dev/urandom")
__throw_system_error(ENOENT, ("random device not supported " + __token).c_str());
}
random_device::~random_device()
{
}
random_device::~random_device() {}
unsigned
random_device::operator()()
{
unsigned r;
errno_t err = rand_s(&r);
if (err)
__throw_system_error(err, "random_device rand_s failed.");
return r;
unsigned random_device::operator()() {
unsigned r;
errno_t err = rand_s(&r);
if (err)
__throw_system_error(err, "random_device rand_s failed.");
return r;
}
#elif defined(_LIBCPP_USING_FUCHSIA_CPRNG)
@@ -188,12 +155,10 @@ unsigned random_device::operator()() {
}
#else
#error "Random device not implemented for this architecture"
# error "Random device not implemented for this architecture"
#endif
double
random_device::entropy() const noexcept
{
double random_device::entropy() const noexcept {
#if defined(_LIBCPP_USING_DEV_RANDOM) && defined(RNDGETENTCNT)
int ent;
if (::ioctl(__f_, RNDGETENTCNT, &ent) < 0)