"Ada.Exceptions.Exception_Propagation" is not a predefined library unit

[Duncan Sands]

Hi Luke,

> a-exexpr.adb:39:06: "Ada.Exceptions.Exception_Propagation" is not a
> predefined library unit

it looks like you get this error when the compiler can't find a file that it
thinks forms part of the Ada library (this is determined by the name, eg: a
package Ada.XYZ is expected to be part of the Ada library).  For example,
if the compiler looks for the spec of Ada.Exceptions.Exception_Propagation
(which should be called a-exexpr.ads) but can't find it then you will get
this message.  At least, that's my understanding from a few minutes of
rummaging around in the source code.

Ciao,

Duncan.