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locks; strict;
comment	@// @;


1.1
date	2017.01.11.10.37.45;	author joerg;	state Exp;
branches
	1.1.1.1;
next	;
commitid	CNnUNfII1jgNmxBz;

1.1.1.1
date	2017.01.11.10.37.45;	author joerg;	state Exp;
branches
	1.1.1.1.4.1
	1.1.1.1.16.1;
next	1.1.1.2;
commitid	CNnUNfII1jgNmxBz;

1.1.1.2
date	2019.11.13.22.22.54;	author joerg;	state dead;
branches;
next	;
commitid	QD8YATxuNG34YJKB;

1.1.1.1.4.1
date	2017.01.11.10.37.45;	author pgoyette;	state dead;
branches;
next	1.1.1.1.4.2;
commitid	jjw7cAwgyKq7RfKz;

1.1.1.1.4.2
date	2017.03.20.06.53.33;	author pgoyette;	state Exp;
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next	;
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1.1.1.1.16.1
date	2020.04.13.07.50.22;	author martin;	state dead;
branches;
next	;
commitid	X01YhRUPVUDaec4C;


desc
@@


1.1
log
@Initial revision
@
text
@// RUN: %clang_cc1 -fsyntax-only -verify -std=c++14 %s

namespace basic {
// Ensuring that __bos can be used in constexpr functions without anything
// sketchy going on...
constexpr int bos0() {
  int k = 5;
  char cs[10] = {};
  return __builtin_object_size(&cs[k], 0);
}

constexpr int bos1() {
  int k = 5;
  char cs[10] = {};
  return __builtin_object_size(&cs[k], 1);
}

constexpr int bos2() {
  int k = 5;
  char cs[10] = {};
  return __builtin_object_size(&cs[k], 2);
}

constexpr int bos3() {
  int k = 5;
  char cs[10] = {};
  return __builtin_object_size(&cs[k], 3);
}

static_assert(bos0() == sizeof(char) * 5, "");
static_assert(bos1() == sizeof(char) * 5, "");
static_assert(bos2() == sizeof(char) * 5, "");
static_assert(bos3() == sizeof(char) * 5, "");
}

namespace in_enable_if {
// The code that prompted these changes was __bos in enable_if

void copy5CharsInto(char *buf) // expected-note{{candidate}}
    __attribute__((enable_if(__builtin_object_size(buf, 0) != -1 &&
                                 __builtin_object_size(buf, 0) > 5,
                             "")));

// We use different EvalModes for __bos with type 0 versus 1. Ensure 1 works,
// too...
void copy5CharsIntoStrict(char *buf) // expected-note{{candidate}}
    __attribute__((enable_if(__builtin_object_size(buf, 1) != -1 &&
                                 __builtin_object_size(buf, 1) > 5,
                             "")));

struct LargeStruct {
  int pad;
  char buf[6];
  int pad2;
};

struct SmallStruct {
  int pad;
  char buf[5];
  int pad2;
};

void noWriteToBuf() {
  char buf[6];
  copy5CharsInto(buf);

  LargeStruct large;
  copy5CharsIntoStrict(large.buf);
}

void initTheBuf() {
  char buf[6] = {};
  copy5CharsInto(buf);

  LargeStruct large = {0, {}, 0};
  copy5CharsIntoStrict(large.buf);
}

int getI();
void initTheBufWithALoop() {
  char buf[6] = {};
  for (unsigned I = getI(); I != sizeof(buf); ++I)
    buf[I] = I;
  copy5CharsInto(buf);

  LargeStruct large;
  for (unsigned I = getI(); I != sizeof(buf); ++I)
    large.buf[I] = I;
  copy5CharsIntoStrict(large.buf);
}

void tooSmallBuf() {
  char buf[5];
  copy5CharsInto(buf); // expected-error{{no matching function for call}}

  SmallStruct small;
  copy5CharsIntoStrict(small.buf); // expected-error{{no matching function for call}}
}
}
@


1.1.1.1
log
@Import Clang pre-4.0.0 r291444.
@
text
@@


1.1.1.1.16.1
log
@Mostly merge changes from HEAD upto 20200411
@
text
@@


1.1.1.2
log
@Mark old LLVM instance as dead.
@
text
@@


1.1.1.1.4.1
log
@file builtin-object-size-cxx14.cpp was added on branch pgoyette-localcount on 2017-03-20 06:53:33 +0000
@
text
@d1 99
@


1.1.1.1.4.2
log
@Sync with HEAD
@
text
@a0 99
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++14 %s

namespace basic {
// Ensuring that __bos can be used in constexpr functions without anything
// sketchy going on...
constexpr int bos0() {
  int k = 5;
  char cs[10] = {};
  return __builtin_object_size(&cs[k], 0);
}

constexpr int bos1() {
  int k = 5;
  char cs[10] = {};
  return __builtin_object_size(&cs[k], 1);
}

constexpr int bos2() {
  int k = 5;
  char cs[10] = {};
  return __builtin_object_size(&cs[k], 2);
}

constexpr int bos3() {
  int k = 5;
  char cs[10] = {};
  return __builtin_object_size(&cs[k], 3);
}

static_assert(bos0() == sizeof(char) * 5, "");
static_assert(bos1() == sizeof(char) * 5, "");
static_assert(bos2() == sizeof(char) * 5, "");
static_assert(bos3() == sizeof(char) * 5, "");
}

namespace in_enable_if {
// The code that prompted these changes was __bos in enable_if

void copy5CharsInto(char *buf) // expected-note{{candidate}}
    __attribute__((enable_if(__builtin_object_size(buf, 0) != -1 &&
                                 __builtin_object_size(buf, 0) > 5,
                             "")));

// We use different EvalModes for __bos with type 0 versus 1. Ensure 1 works,
// too...
void copy5CharsIntoStrict(char *buf) // expected-note{{candidate}}
    __attribute__((enable_if(__builtin_object_size(buf, 1) != -1 &&
                                 __builtin_object_size(buf, 1) > 5,
                             "")));

struct LargeStruct {
  int pad;
  char buf[6];
  int pad2;
};

struct SmallStruct {
  int pad;
  char buf[5];
  int pad2;
};

void noWriteToBuf() {
  char buf[6];
  copy5CharsInto(buf);

  LargeStruct large;
  copy5CharsIntoStrict(large.buf);
}

void initTheBuf() {
  char buf[6] = {};
  copy5CharsInto(buf);

  LargeStruct large = {0, {}, 0};
  copy5CharsIntoStrict(large.buf);
}

int getI();
void initTheBufWithALoop() {
  char buf[6] = {};
  for (unsigned I = getI(); I != sizeof(buf); ++I)
    buf[I] = I;
  copy5CharsInto(buf);

  LargeStruct large;
  for (unsigned I = getI(); I != sizeof(buf); ++I)
    large.buf[I] = I;
  copy5CharsIntoStrict(large.buf);
}

void tooSmallBuf() {
  char buf[5];
  copy5CharsInto(buf); // expected-error{{no matching function for call}}

  SmallStruct small;
  copy5CharsIntoStrict(small.buf); // expected-error{{no matching function for call}}
}
}
@


