* [Ada] Plug loophole for built-in-place return with limited_with clause
@ 2022-07-04 7:50 Pierre-Marie de Rodat
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From: Pierre-Marie de Rodat @ 2022-07-04 7:50 UTC (permalink / raw)
To: gcc-patches; +Cc: Eric Botcazou
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When the result type of a function requiring built-in-place return is
only visible through a limited_with clause, the compiled needs to wait
for the nonlimited view to be available in order to compute whether
the built-in-place return is needed, and this comprises tagging the
function with the Returns_By_Ref flag.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* exp_ch6.adb (Build_In_Place_Formal): Also compute Returns_By_Ref
for the function if the extra formals were not built initially.
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diff --git a/gcc/ada/exp_ch6.adb b/gcc/ada/exp_ch6.adb
--- a/gcc/ada/exp_ch6.adb
+++ b/gcc/ada/exp_ch6.adb
@@ -850,11 +850,12 @@ package body Exp_Ch6 is
-- The return type in the function declaration may have been a limited
-- view, and the extra formals for the function were not generated at
-- that point. At the point of call the full view must be available and
- -- the extra formals can be created.
+ -- the extra formals can be created and Returns_By_Ref computed.
if No (Extra_Formal) then
Create_Extra_Formals (Func);
Extra_Formal := Extra_Formals (Func);
+ Compute_Returns_By_Ref (Func);
end if;
-- We search for a formal with a matching suffix. We can't search
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2022-07-04 7:50 [Ada] Plug loophole for built-in-place return with limited_with clause Pierre-Marie de Rodat
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