PR# 18264 Wrong flat form for call with implicit argument conversion

A call to a routine 

   try (10000 * 1000000)

with

   try (n: INTEGER_64)

is shown in the Flat form as

        make
                do
                        try (10000 * 1000000.to_integer_64)
                end

This is wrong, because "." has higher precedence than "*", so the Flat
form makes it look like 1000000 will be converted to INTEGER_64 and then
multiplied by 10000 (which will first be converted to INTEGER_64).

The correct Flat form, showing what will really happen when the code is
executed, is

        make
                do
                        try ((10000 * 1000000).to_integer_64)
                end

I don't know if this is fixable but it is very misleading, since it makes
it appear that the call will function as expected (but it won't).

Compile with attached class TEST and examine Flat form of {TEST}.make.

Attachments for problem report #18264