http://d.puremagic.com/issues/show_bug.cgi?id=7766
Summary: (Full Closures) Chain of nested functions fails
Product: D
Version: D2
Platform: x86_64
OS/Version: Windows
Status: NEW
Severity: minor
Priority: P2
Component: DMD
AssignedTo: nob...@puremagic.com
ReportedBy: xi...@live.com
--- Comment #0 from Xinok <xi...@live.com> 2012-03-24 19:43:02 PDT ---
In the following code, you'd expect it to print 365. However, it prints a
random number instead. The issue is that 'value' is referred to by 'foo', which
is referred to by 'foo2'. DMD fails to detect this chain, so 'value' is
allocated on the stack, not the heap. Once the function 'clbug' returns,
'value' is popped from the stack and so it ends up printing a random number.
value -> foo -> foo2
void main(){
clbug()();
}
int delegate() clbug(){
int value = 365;
int foo(){
writeln(value);
return value;
}
int foo2(){
return foo();
}
return &foo2;
}
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