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view dmd2/root/port.h @ 1499:df11cdec45a2
Another shot at fixing the issues with (constant) struct literals and their addresses. See DMD2682, #218, #324.
The idea is to separate the notion of const from 'this variable can always be
replaced with its initializer' in the frontend. To do that, I introduced
Declaration::isSameAsInitializer, which is overridden in VarDeclaration to
return false for constants that have a struct literal initializer.
So
{{{
const S s = S(5);
void foo() { auto ps = &s; }
// is no longer replaced by
void foo() { auto ps = &(S(5)); }
}}}
To make taking the address of a struct constant with a struct-initializer
outside of function scope possible, I made sure that AddrExp::optimize doesn't
try to run the argument's optimization with WANTinterpret - that'd again
replace the constant with a struct literal temporary.
author | Christian Kamm <kamm incasoftware de> |
---|---|
date | Sun, 14 Jun 2009 19:49:58 +0200 |
parents | 638d16625da2 |
children |
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// Copyright (c) 1999-2009 by Digital Mars // All Rights Reserved // written by Walter Bright // http://www.digitalmars.com #ifndef PORT_H #define PORT_H // Portable wrapper around compiler/system specific things. // The idea is to minimize #ifdef's in the app code. #ifndef TYPEDEFS #define TYPEDEFS #include <wchar.h> #if _MSC_VER typedef __int64 longlong; typedef unsigned __int64 ulonglong; // According to VC 8.0 docs, long double is the same as double #define strtold strtod #define strtof strtod #else typedef long long longlong; typedef unsigned long long ulonglong; #endif #endif typedef double d_time; struct Port { static double nan; static double infinity; static double dbl_max; static double dbl_min; static long double ldbl_max; #if __GNUC__ // These conflict with macros in math.h, should rename them #undef isnan #undef isfinite #undef isinfinity #undef signbit #endif static int isNan(double); static int isNan(long double); static int isSignallingNan(double); static int isSignallingNan(long double); static int isFinite(double); static int isInfinity(double); static int Signbit(double); static double floor(double); static double pow(double x, double y); static ulonglong strtoull(const char *p, char **pend, int base); static char *ull_to_string(char *buffer, ulonglong ull); static wchar_t *ull_to_string(wchar_t *buffer, ulonglong ull); // Convert ulonglong to double static double ull_to_double(ulonglong ull); // Get locale-dependent list separator static const char *list_separator(); static const wchar_t *wlist_separator(); static char *strupr(char *); }; #endif