http://d.puremagic.com/issues/show_bug.cgi?id=8396
Summary: wrong order of evaluation for tuple expansion in
function arguments
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: DMD
AssignedTo: nob...@puremagic.com
ReportedBy: d...@dawgfoto.de
--- Comment #0 from d...@dawgfoto.de 2012-07-17 06:03:32 PDT ---
cat > bug.d << CODE
struct Tuple { int _a, _b; }
Tuple foo() { return Tuple(1, 2); }
extern(C) int bar(int a, int b)
{
return b - a;
}
void main()
{
assert(bar(foo().tupleof) == 1);
}
CODE
dmd -run bug
----
Arguments for extern(C) function are currently evaluated from right to left
(Bug 6620). The temporary for the result of foo is evaluated with the leftmost
argument, therefore the second argument is uninitialized when calling an
extern(C) function.
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