head	1.4;
access;
symbols
	netbsd-11-0-RC5:1.3
	netbsd-11-0-RC4:1.3
	netbsd-11-0-RC3:1.3
	netbsd-11-0-RC2:1.3
	netbsd-11-0-RC1:1.3
	gcc-14-3-0:1.1.1.3
	perseant-exfatfs-base-20250801:1.3
	netbsd-11:1.3.0.4
	netbsd-11-base:1.3
	gcc-12-5-0:1.1.1.2
	perseant-exfatfs-base-20240630:1.3
	gcc-12-4-0:1.1.1.2
	perseant-exfatfs:1.3.0.2
	perseant-exfatfs-base:1.3
	gcc-12-3-0:1.1.1.2
	gcc-10-5-0:1.1.1.1
	gcc-10-4-0:1.1.1.1
	cjep_sun2x:1.2.0.4
	cjep_sun2x-base:1.2
	cjep_staticlib_x-base1:1.2
	cjep_staticlib_x:1.2.0.2
	cjep_staticlib_x-base:1.2
	gcc-10-3-0:1.1.1.1
	FSF:1.1.1;
locks; strict;
comment	@// @;


1.4
date	2025.09.14.00.08.57;	author mrg;	state Exp;
branches;
next	1.3;
commitid	x9D5QEnvbeMI4CaG;

1.3
date	2023.07.31.01.44.56;	author mrg;	state Exp;
branches;
next	1.2;
commitid	q79F5Opf0FLsyTyE;

1.2
date	2021.04.11.23.54.27;	author mrg;	state dead;
branches;
next	1.1;
commitid	wJn7ggfUTEMOWVOC;

1.1
date	2021.04.10.22.09.22;	author mrg;	state Exp;
branches
	1.1.1.1;
next	;
commitid	eC4g0MRpqTvEkNOC;

1.1.1.1
date	2021.04.10.22.09.22;	author mrg;	state Exp;
branches;
next	1.1.1.2;
commitid	eC4g0MRpqTvEkNOC;

1.1.1.2
date	2023.07.30.05.20.40;	author mrg;	state Exp;
branches;
next	1.1.1.3;
commitid	tk6nV4mbc9nVEMyE;

1.1.1.3
date	2025.09.13.23.45.04;	author mrg;	state Exp;
branches;
next	;
commitid	KwhwN4krNWa6XBaG;


desc
@@


1.4
log
@merge GCC 14.3.0.
@
text
@//===-- sanitizer_libc.cpp ------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This file is shared between AddressSanitizer and ThreadSanitizer
// run-time libraries. See sanitizer_libc.h for details.
//===----------------------------------------------------------------------===//

// Do not redefine builtins; this file is defining the builtin replacements.
#define SANITIZER_COMMON_NO_REDEFINE_BUILTINS

#include "sanitizer_allocator_internal.h"
#include "sanitizer_common.h"
#include "sanitizer_libc.h"

namespace __sanitizer {

s64 internal_atoll(const char *nptr) {
  return internal_simple_strtoll(nptr, nullptr, 10);
}

void *internal_memchr(const void *s, int c, uptr n) {
  const char *t = (const char *)s;
  for (uptr i = 0; i < n; ++i, ++t)
    if (*t == c)
      return reinterpret_cast<void *>(const_cast<char *>(t));
  return nullptr;
}

void *internal_memrchr(const void *s, int c, uptr n) {
  const char *t = (const char *)s;
  void *res = nullptr;
  for (uptr i = 0; i < n; ++i, ++t) {
    if (*t == c) res = reinterpret_cast<void *>(const_cast<char *>(t));
  }
  return res;
}

int internal_memcmp(const void* s1, const void* s2, uptr n) {
  const char *t1 = (const char *)s1;
  const char *t2 = (const char *)s2;
  for (uptr i = 0; i < n; ++i, ++t1, ++t2)
    if (*t1 != *t2)
      return *t1 < *t2 ? -1 : 1;
  return 0;
}

extern "C" {
SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_internal_memcpy(void *dest,
                                                                const void *src,
                                                                uptr n) {
  char *d = (char*)dest;
  const char *s = (const char *)src;
  for (uptr i = 0; i < n; ++i)
    d[i] = s[i];
  return dest;
}

SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_internal_memmove(
    void *dest, const void *src, uptr n) {
  char *d = (char*)dest;
  const char *s = (const char *)src;
  sptr i, signed_n = (sptr)n;
  CHECK_GE(signed_n, 0);
  if (d < s) {
    for (i = 0; i < signed_n; ++i)
      d[i] = s[i];
  } else {
    if (d > s && signed_n > 0) {
      for (i = signed_n - 1; i >= 0; --i) {
        d[i] = s[i];
      }
    }
  }
  return dest;
}

SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_internal_memset(void *s, int c,
                                                                uptr n) {
  // Optimize for the most performance-critical case:
  if ((reinterpret_cast<uptr>(s) % 16) == 0 && (n % 16) == 0) {
    u64 *p = reinterpret_cast<u64*>(s);
    u64 *e = p + n / 8;
    u64 v = c;
    v |= v << 8;
    v |= v << 16;
    v |= v << 32;
    for (; p < e; p += 2)
      p[0] = p[1] = v;
    return s;
  }
  // The next line prevents Clang from making a call to memset() instead of the
  // loop below.
  // FIXME: building the runtime with -ffreestanding is a better idea. However
  // there currently are linktime problems due to PR12396.
  char volatile *t = (char*)s;
  for (uptr i = 0; i < n; ++i, ++t) {
    *t = c;
  }
  return s;
}
}  // extern "C"

uptr internal_strcspn(const char *s, const char *reject) {
  uptr i;
  for (i = 0; s[i]; i++) {
    if (internal_strchr(reject, s[i]))
      return i;
  }
  return i;
}

char* internal_strdup(const char *s) {
  uptr len = internal_strlen(s);
  char *s2 = (char*)InternalAlloc(len + 1);
  internal_memcpy(s2, s, len);
  s2[len] = 0;
  return s2;
}

int internal_strcmp(const char *s1, const char *s2) {
  while (true) {
    unsigned c1 = *s1;
    unsigned c2 = *s2;
    if (c1 != c2) return (c1 < c2) ? -1 : 1;
    if (c1 == 0) break;
    s1++;
    s2++;
  }
  return 0;
}

int internal_strncmp(const char *s1, const char *s2, uptr n) {
  for (uptr i = 0; i < n; i++) {
    unsigned c1 = *s1;
    unsigned c2 = *s2;
    if (c1 != c2) return (c1 < c2) ? -1 : 1;
    if (c1 == 0) break;
    s1++;
    s2++;
  }
  return 0;
}

char* internal_strchr(const char *s, int c) {
  while (true) {
    if (*s == (char)c)
      return const_cast<char *>(s);
    if (*s == 0)
      return nullptr;
    s++;
  }
}

char *internal_strchrnul(const char *s, int c) {
  char *res = internal_strchr(s, c);
  if (!res)
    res = const_cast<char *>(s) + internal_strlen(s);
  return res;
}

char *internal_strrchr(const char *s, int c) {
  const char *res = nullptr;
  for (uptr i = 0; s[i]; i++) {
    if (s[i] == c) res = s + i;
  }
  return const_cast<char *>(res);
}

uptr internal_strlen(const char *s) {
  uptr i = 0;
  while (s[i]) i++;
  return i;
}

uptr internal_strlcat(char *dst, const char *src, uptr maxlen) {
  const uptr srclen = internal_strlen(src);
  const uptr dstlen = internal_strnlen(dst, maxlen);
  if (dstlen == maxlen) return maxlen + srclen;
  if (srclen < maxlen - dstlen) {
    internal_memmove(dst + dstlen, src, srclen + 1);
  } else {
    internal_memmove(dst + dstlen, src, maxlen - dstlen - 1);
    dst[maxlen - 1] = '\0';
  }
  return dstlen + srclen;
}

char *internal_strncat(char *dst, const char *src, uptr n) {
  uptr len = internal_strlen(dst);
  uptr i;
  for (i = 0; i < n && src[i]; i++)
    dst[len + i] = src[i];
  dst[len + i] = 0;
  return dst;
}

wchar_t *internal_wcscpy(wchar_t *dst, const wchar_t *src) {
  wchar_t *dst_it = dst;
  do {
    *dst_it++ = *src++;
  } while (*src);
  return dst;
}

uptr internal_strlcpy(char *dst, const char *src, uptr maxlen) {
  const uptr srclen = internal_strlen(src);
  if (srclen < maxlen) {
    internal_memmove(dst, src, srclen + 1);
  } else if (maxlen != 0) {
    internal_memmove(dst, src, maxlen - 1);
    dst[maxlen - 1] = '\0';
  }
  return srclen;
}

char *internal_strncpy(char *dst, const char *src, uptr n) {
  uptr i;
  for (i = 0; i < n && src[i]; i++)
    dst[i] = src[i];
  internal_memset(dst + i, '\0', n - i);
  return dst;
}

wchar_t *internal_wcsncpy(wchar_t *dst, const wchar_t *src, uptr n) {
  uptr i;
  for (i = 0; i < n && src[i]; ++i)
    dst[i] = src[i];
  internal_memset(dst + i, 0, (n - i) * sizeof(wchar_t));
  return dst;
}

uptr internal_strnlen(const char *s, uptr maxlen) {
  uptr i = 0;
  while (i < maxlen && s[i]) i++;
  return i;
}

char *internal_strstr(const char *haystack, const char *needle) {
  // This is O(N^2), but we are not using it in hot places.
  uptr len1 = internal_strlen(haystack);
  uptr len2 = internal_strlen(needle);
  if (len1 < len2) return nullptr;
  for (uptr pos = 0; pos <= len1 - len2; pos++) {
    if (internal_memcmp(haystack + pos, needle, len2) == 0)
      return const_cast<char *>(haystack) + pos;
  }
  return nullptr;
}

s64 internal_simple_strtoll(const char *nptr, const char **endptr, int base) {
  CHECK_EQ(base, 10);
  while (IsSpace(*nptr)) nptr++;
  int sgn = 1;
  u64 res = 0;
  bool have_digits = false;
  char *old_nptr = const_cast<char *>(nptr);
  if (*nptr == '+') {
    sgn = 1;
    nptr++;
  } else if (*nptr == '-') {
    sgn = -1;
    nptr++;
  }
  while (IsDigit(*nptr)) {
    res = (res <= UINT64_MAX / 10) ? res * 10 : UINT64_MAX;
    int digit = ((*nptr) - '0');
    res = (res <= UINT64_MAX - digit) ? res + digit : UINT64_MAX;
    have_digits = true;
    nptr++;
  }
  if (endptr) {
    *endptr = (have_digits) ? const_cast<char *>(nptr) : old_nptr;
  }
  if (sgn > 0) {
    return (s64)(Min((u64)INT64_MAX, res));
  } else {
    return (res > INT64_MAX) ? INT64_MIN : ((s64)res * -1);
  }
}

uptr internal_wcslen(const wchar_t *s) {
  uptr i = 0;
  while (s[i]) i++;
  return i;
}

uptr internal_wcsnlen(const wchar_t *s, uptr maxlen) {
  uptr i = 0;
  while (i < maxlen && s[i]) i++;
  return i;
}

bool mem_is_zero(const char *beg, uptr size) {
  CHECK_LE(size, 1ULL << FIRST_32_SECOND_64(30, 40));  // Sanity check.
  const char *end = beg + size;
  uptr *aligned_beg = (uptr *)RoundUpTo((uptr)beg, sizeof(uptr));
  uptr *aligned_end = (uptr *)RoundDownTo((uptr)end, sizeof(uptr));
  uptr all = 0;
  // Prologue.
  for (const char *mem = beg; mem < (char*)aligned_beg && mem < end; mem++)
    all |= *mem;
  // Aligned loop.
  for (; aligned_beg < aligned_end; aligned_beg++)
    all |= *aligned_beg;
  // Epilogue.
  if ((char *)aligned_end >= beg) {
    for (const char *mem = (char *)aligned_end; mem < end; mem++) all |= *mem;
  }
  return all == 0;
}

} // namespace __sanitizer
@


1.3
log
@make this actually be GCC 12.3.0's libsanitizer.

the libsanitizer we used with GCC 9 and GCC 10 was significantly
ahead of the GCC 9 and GCC 10 provided versions.
@
text
@d13 3
d52 4
a55 1
void *internal_memcpy(void *dest, const void *src, uptr n) {
d63 2
a64 1
void *internal_memmove(void *dest, const void *src, uptr n) {
d82 2
a83 1
void *internal_memset(void* s, int c, uptr n) {
d106 1
d202 8
d229 8
@


1.2
log
@revert sanitizer back to the version we were using with GCC 9, since
that one was already newer than the GCC 10 version.
@
text
@d261 12
@


1.1
log
@Initial revision
@
text
@@


1.1.1.1
log
@initial import of GCC 10.3.0.  main changes include:

caveats:
- ABI issue between c++14 and c++17 fixed
- profile mode is removed from libstdc++
- -fno-common is now the default

new features:
- new flags -fallocation-dce, -fprofile-partial-training,
  -fprofile-reproducible, -fprofile-prefix-path, and -fanalyzer
- many new compile and link time optimisations
- enhanced drive optimisations
- openacc 2.6 support
- openmp 5.0 features
- new warnings: -Wstring-compare and -Wzero-length-bounds
- extended warnings: -Warray-bounds, -Wformat-overflow,
  -Wrestrict, -Wreturn-local-addr, -Wstringop-overflow,
  -Warith-conversion, -Wmismatched-tags, and -Wredundant-tags
- some likely C2X features implemented
- more C++20 implemented
- many new arm & intel CPUs known

hundreds of reported bugs are fixed.  full list of changes
can be found at:

   https://gcc.gnu.org/gcc-10/changes.html
@
text
@@


1.1.1.2
log
@initial import of GCC 12.3.0.

major changes in GCC 11 included:

- The default mode for C++ is now -std=gnu++17 instead of -std=gnu++14.
- When building GCC itself, the host compiler must now support C++11,
  rather than C++98.
- Some short options of the gcov tool have been renamed: -i to -j and
  -j to -H.
- ThreadSanitizer improvements.
- Introduce Hardware-assisted AddressSanitizer support.
- For targets that produce DWARF debugging information GCC now defaults
  to DWARF version 5. This can produce up to 25% more compact debug
  information compared to earlier versions.
- Many optimisations.
- The existing malloc attribute has been extended so that it can be
  used to identify allocator/deallocator API pairs. A pair of new
  -Wmismatched-dealloc and -Wmismatched-new-delete warnings are added.
- Other new warnings:
  -Wsizeof-array-div, enabled by -Wall, warns about divisions of two
    sizeof operators when the first one is applied to an array and the
    divisor does not equal the size of the array element.
  -Wstringop-overread, enabled by default, warns about calls to string
    functions reading past the end of the arrays passed to them as
    arguments.
  -Wtsan, enabled by default, warns about unsupported features in
    ThreadSanitizer (currently std::atomic_thread_fence).
- Enchanced warnings:
  -Wfree-nonheap-object detects many more instances of calls to
    deallocation functions with pointers not returned from a dynamic
    memory allocation function.
  -Wmaybe-uninitialized diagnoses passing pointers or references to
    uninitialized memory to functions taking const-qualified arguments.
  -Wuninitialized detects reads from uninitialized dynamically
    allocated memory.
  -Warray-parameter warns about functions with inconsistent array forms.
  -Wvla-parameter warns about functions with inconsistent VLA forms.
- Several new features from the upcoming C2X revision of the ISO C
  standard are supported with -std=c2x and -std=gnu2x.
- Several C++20 features have been implemented.
- The C++ front end has experimental support for some of the upcoming
  C++23 draft.
- Several new C++ warnings.
- Enhanced Arm, AArch64, x86, and RISC-V CPU support.
- The implementation of how program state is tracked within
  -fanalyzer has been completely rewritten with many enhancements.

see https://gcc.gnu.org/gcc-11/changes.html for a full list.

major changes in GCC 12 include:

- An ABI incompatibility between C and C++ when passing or returning
  by value certain aggregates containing zero width bit-fields has
  been discovered on various targets. x86-64, ARM and AArch64
  will always ignore them (so there is a C ABI incompatibility
  between GCC 11 and earlier with GCC 12 or later), PowerPC64 ELFv2
  always take them into account (so there is a C++ ABI
  incompatibility, GCC 4.4 and earlier compatible with GCC 12 or
  later, incompatible with GCC 4.5 through GCC 11). RISC-V has
  changed the handling of these already starting with GCC 10. As
  the ABI requires, MIPS takes them into account handling function
  return values so there is a C++ ABI incompatibility with GCC 4.5
  through 11.
- STABS: Support for emitting the STABS debugging format is
  deprecated and will be removed in the next release. All ports now
  default to emit DWARF (version 2 or later) debugging info or are
  obsoleted.
- Vectorization is enabled at -O2 which is now equivalent to the
  original -O2 -ftree-vectorize -fvect-cost-model=very-cheap.
- GCC now supports the ShadowCallStack sanitizer.
- Support for __builtin_shufflevector compatible with the clang
  language extension was added.
- Support for attribute unavailable was added.
- Support for __builtin_dynamic_object_size compatible with the
  clang language extension was added.
- New warnings:
  -Wbidi-chars warns about potentially misleading UTF-8
    bidirectional control characters.
  -Warray-compare warns about comparisons between two operands of
    array type.
- Some new features from the upcoming C2X revision of the ISO C
  standard are supported with -std=c2x and -std=gnu2x.
- Several C++23 features have been implemented.
- Many C++ enhancements across warnings and -f options.

see https://gcc.gnu.org/gcc-12/changes.html for a full list.
@
text
@a260 12
uptr internal_wcslen(const wchar_t *s) {
  uptr i = 0;
  while (s[i]) i++;
  return i;
}

uptr internal_wcsnlen(const wchar_t *s, uptr maxlen) {
  uptr i = 0;
  while (i < maxlen && s[i]) i++;
  return i;
}

@


1.1.1.3
log
@initial import of GCC 14.3.0.

major changes in GCC 13:
- improved sanitizer
- zstd debug info compression
- LTO improvements
- SARIF based diagnostic support
- new warnings: -Wxor-used-as-pow, -Wenum-int-mismatch, -Wself-move,
  -Wdangling-reference
- many new -Wanalyzer* specific warnings
- enhanced warnings: -Wpessimizing-move, -Wredundant-move
- new attributes to mark file descriptors, c++23 "assume"
- several C23 features added
- several C++23 features added
- many new features for Arm, x86, RISC-V

major changes in GCC 14:
- more strict C99 or newer support
- ia64* marked deprecated (but seemingly still in GCC 15.)
- several new hardening features
- support for "hardbool", which can have user supplied values of true/false
- explicit support for stack scrubbing upon function exit
- better auto-vectorisation support
- added clang-compatible __has_feature and __has_extension
- more C23, including -std=c23
- several C++26 features added
- better diagnostics in C++ templates
- new warnings: -Wnrvo, Welaborated-enum-base
- many new features for Arm, x86, RISC-V
- possible ABI breaking change for SPARC64 and small structures with arrays
  of floats.
@
text
@a12 3
// Do not redefine builtins; this file is defining the builtin replacements.
#define SANITIZER_COMMON_NO_REDEFINE_BUILTINS

d49 1
a49 4
extern "C" {
SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_internal_memcpy(void *dest,
                                                                const void *src,
                                                                uptr n) {
d57 1
a57 2
SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_internal_memmove(
    void *dest, const void *src, uptr n) {
d75 1
a75 2
SANITIZER_INTERFACE_ATTRIBUTE void *__sanitizer_internal_memset(void *s, int c,
                                                                uptr n) {
a97 1
}  // extern "C"
a192 8
wchar_t *internal_wcscpy(wchar_t *dst, const wchar_t *src) {
  wchar_t *dst_it = dst;
  do {
    *dst_it++ = *src++;
  } while (*src);
  return dst;
}

a211 8
wchar_t *internal_wcsncpy(wchar_t *dst, const wchar_t *src, uptr n) {
  uptr i;
  for (i = 0; i < n && src[i]; ++i)
    dst[i] = src[i];
  internal_memset(dst + i, 0, (n - i) * sizeof(wchar_t));
  return dst;
}

@