The Duration type of package Standard can be either a 32-bit or a 64-bit
fixed-point type depending on a flag in the system.ads file, but it needs
to be 32-bit when a target configuration file sets a 32-bit size for all
the predefined integer types.
Tested on x86_64-pc-linux-gnu, committed on trunk
gcc/ada/
* gnat1drv.adb (Adjust_Global_Switches): Force a 32-bit Duration
type if the maximum integer size is lower than 64 bits.diff --git a/gcc/ada/gnat1drv.adb b/gcc/ada/gnat1drv.adb
--- a/gcc/ada/gnat1drv.adb
+++ b/gcc/ada/gnat1drv.adb
@@ -819,6 +819,12 @@ procedure Gnat1drv is
Ttypes.Standard_Long_Long_Integer_Size;
end if;
+ -- Forcefully use a 32-bit Duration with only 32-bit integer types
+
+ if Ttypes.System_Max_Integer_Size < 64 then
+ Targparm.Duration_32_Bits_On_Target := True;
+ end if;
+
-- Finally capture adjusted value of Suppress_Options as the initial
-- value for Scope_Suppress, which will be modified as we move from
-- scope to scope (by Suppress/Unsuppress/Overflow_Checks pragmas).
