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revert the patch to remove no-strict-aliasing

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VS 2012 doesnt support C++11 unions..
This commit is contained in:
Nuno Lopes 2017-08-14 23:00:59 +01:00
parent 197aefd111
commit 4b00bc636b
5 changed files with 49 additions and 46 deletions
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8
src/ast/ast.cpp
View file

@ -35,7 +35,7 @@ Revision History:
parameter::~parameter() {
if (m_kind == PARAM_RATIONAL) {
m_rational.~rational();
reinterpret_cast<rational *>(m_rational)->~rational();
}
}
@ -50,14 +50,14 @@ parameter& parameter::operator=(parameter const& other) {
return *this;
}
if (m_kind == PARAM_RATIONAL) {
m_rational.~rational();
reinterpret_cast<rational *>(m_rational)->~rational();
}
m_kind = other.m_kind;
switch(other.m_kind) {
case PARAM_INT: m_int = other.get_int(); break;
case PARAM_AST: m_ast = other.get_ast(); break;
case PARAM_SYMBOL: m_symbol = other.get_symbol(); break;
case PARAM_RATIONAL: new (&m_rational) rational(other.get_rational()); break;
case PARAM_SYMBOL: new (m_symbol) symbol(other.get_symbol()); break;
case PARAM_RATIONAL: new (m_rational) rational(other.get_rational()); break;
case PARAM_DOUBLE: m_dval = other.m_dval; break;
case PARAM_EXTERNAL: m_ext_id = other.m_ext_id; break;
default:

24
src/ast/ast.h
View file

@ -100,12 +100,12 @@ private:
// It is not possible to use tag pointers, since symbols are already tagged.
union {
int m_int; // for PARAM_INT
ast* m_ast; // for PARAM_AST
symbol m_symbol; // for PARAM_SYMBOL
rational m_rational; // for PARAM_RATIONAL
double m_dval; // for PARAM_DOUBLE (remark: this is not used in float_decl_plugin)
unsigned m_ext_id; // for PARAM_EXTERNAL
int m_int; // for PARAM_INT
ast* m_ast; // for PARAM_AST
char m_symbol[sizeof(symbol)]; // for PARAM_SYMBOL
char m_rational[sizeof(rational)]; // for PARAM_RATIONAL
double m_dval; // for PARAM_DOUBLE (remark: this is not used in float_decl_plugin)
unsigned m_ext_id; // for PARAM_EXTERNAL
};
public:
@ -114,10 +114,12 @@ public:
explicit parameter(int val): m_kind(PARAM_INT), m_int(val) {}
explicit parameter(unsigned val): m_kind(PARAM_INT), m_int(val) {}
explicit parameter(ast * p): m_kind(PARAM_AST), m_ast(p) {}
explicit parameter(symbol const & s): m_kind(PARAM_SYMBOL), m_symbol(s) {}
explicit parameter(rational const & r): m_kind(PARAM_RATIONAL), m_rational(r) {}
explicit parameter(symbol const & s): m_kind(PARAM_SYMBOL) { new (m_symbol) symbol(s); }
explicit parameter(rational const & r): m_kind(PARAM_RATIONAL) { new (m_rational) rational(r); }
explicit parameter(double d):m_kind(PARAM_DOUBLE), m_dval(d) {}
explicit parameter(const char *s):m_kind(PARAM_SYMBOL), m_symbol(s) {}
explicit parameter(const char *s):m_kind(PARAM_SYMBOL) {
new (m_symbol) symbol(s);
}
explicit parameter(unsigned ext_id, bool):m_kind(PARAM_EXTERNAL), m_ext_id(ext_id) {}
parameter(parameter const&);
@ -154,8 +156,8 @@ public:
int get_int() const { SASSERT(is_int()); return m_int; }
ast * get_ast() const { SASSERT(is_ast()); return m_ast; }
symbol const & get_symbol() const { SASSERT(is_symbol()); return m_symbol; }
rational const & get_rational() const { SASSERT(is_rational()); return m_rational; }
symbol const & get_symbol() const { SASSERT(is_symbol()); return *(reinterpret_cast<const symbol *>(m_symbol)); }
rational const & get_rational() const { SASSERT(is_rational()); return *(reinterpret_cast<const rational *>(m_rational)); }
double get_double() const { SASSERT(is_double()); return m_dval; }
unsigned get_ext_id() const { SASSERT(is_external()); return m_ext_id; }

51
src/util/optional.h
View file

@ -23,35 +23,32 @@ Revision History:
template<typename T>
class optional {
union {
T m_obj;
char m_dummy;
};
bool m_initialized;
char m_obj[sizeof(T)];
char m_initialized;
void construct(const T & val) {
m_initialized = true;
new (&m_obj) T(val);
m_initialized = 1;
new (reinterpret_cast<void *>(m_obj)) T(val);
}
void destroy() {
if (m_initialized) {
m_obj.~T();
if (m_initialized == 1) {
reinterpret_cast<T *>(m_obj)->~T();
}
m_initialized = false;
m_initialized = 0;
}
public:
optional():
m_initialized(false) {}
m_initialized(0) {}
explicit optional(const T & val) {
construct(val);
}
optional(const optional<T> & val):
m_initialized(false) {
if (val.m_initialized) {
m_initialized(0) {
if (val.m_initialized == 1) {
construct(*val);
}
}
@ -62,13 +59,13 @@ public:
static optional const & undef() { static optional u; return u; }
bool initialized() const { return m_initialized; }
operator bool() const { return m_initialized; }
bool operator!() const { return !m_initialized; }
bool initialized() const { return m_initialized == 1; }
operator bool() const { return m_initialized == 1; }
bool operator!() const { return m_initialized == 0; }
T * get() const {
if (m_initialized) {
return &m_obj;
if (m_initialized == 1) {
return reinterpret_cast<T *>(m_obj);
}
else {
return 0;
@ -76,29 +73,29 @@ public:
}
void set_invalid() {
if (m_initialized) {
if (m_initialized == 1) {
destroy();
}
}
T * operator->() {
SASSERT(m_initialized);
return &m_obj;
SASSERT(m_initialized==1);
return reinterpret_cast<T *>(m_obj);
}
T const * operator->() const {
SASSERT(m_initialized);
return &m_obj;
SASSERT(m_initialized==1);
return reinterpret_cast<T const *>(m_obj);
}
const T & operator*() const {
SASSERT(m_initialized);
return m_obj;
SASSERT(m_initialized==1);
return *reinterpret_cast<T const*>(m_obj);
}
T & operator*() {
SASSERT(m_initialized);
return m_obj;
SASSERT(m_initialized==1);
return *reinterpret_cast<T *>(m_obj);
}
optional & operator=(const T & val) {