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view tests/mini/calls1.d @ 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 | 1bb99290e03a |
children |
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line source
module calls1; import tango.core.Vararg; extern(C) int printf(char*, ...); void main() { {int a = byVal1(3);} {int a = void; byRef1(a);} {char[] c = void; refType(c);} {char[] c = void; refTypeByRef(c);} {S s = void; structByVal(s);} {S s = void; structByRef(s);} {S s = void; structByPtr(&s);} {printf("c-varargs %d %d %d\n", 1,2,3);} {int i=3; float f=24.7; dvararg(i,f);} {char[] s = "hello"; dvarargRefTy(s);} {char[] ss = "hello world!"; dvarargRefTy(ss);} } int byVal1(int a) { return a; } void byRef1(ref int a) { a = 3; } void refType(char[] s) { } void refTypeByRef(ref char[] s) { } struct S { float f; double d; long l; byte b; } void structByVal(S s) { } void structByRef(ref S s) { } void structByPtr(S* s) { } void dvararg(...) { printf("%d %.1f\n", va_arg!(int)(_argptr), va_arg!(float)(_argptr)); } void dvarargRefTy(...) { char[] s = va_arg!(char[])(_argptr); printf("%.*s\n", s.length, s.ptr); }