[fasta] Issue error for large integer literals

pkg/front_end/messages.yaml

Index: pkg/front_end/messages.yaml
diff --git a/pkg/front_end/messages.yaml b/pkg/front_end/messages.yaml
index b0a3d1c618dcf5a985b8518df87e9c5d50f2c21c..bb25bac74c3333135e8da57727b7b6930ba9d61f 100644
--- a/pkg/front_end/messages.yaml
+++ b/pkg/front_end/messages.yaml
@@ -896,3 +896,6 @@ PackageNotFound:
 
 InvalidPackageUri:
   template: "Invalid package Uri '#uri':\n  #string."
+
+IntegerLiteralIsOutOfRange:
+  template: "Integer literal #lexeme is out of range"

[ahe, 2017/08/01 11:34:13]

A great message conveys the following three things:

1. What is wrong?
2. Why is it wrong?
3. How do I fix it?

[ahe, 2017/08/01 11:34:13]

Add single quotes around #lexeme. See also
pkg/front_end/lib/src/fasta/diagnostics.md.

[ahe, 2017/08/01 11:34:13]

Add period at end of sentence.

[alexmarkov, 2017/08/01 20:14:44]

Done.

[alexmarkov, 2017/08/01 20:14:44]

Can you suggest an error message for invalid integer literals which would
satisfy these requirements?

[alexmarkov, 2017/08/01 20:14:44]

Done. Note that pkg/front_end/lib/src/fasta/diagnostics.md says "Do not quote
`null` and numeric literals."

[ahe, 2017/08/03 17:10:16]

template: "The integer literal #lexeme can't be represented in 64 bits."
tip: "Try using <what> if you need an integer larger than
9,223,372,036,854,775,807 or less than -9,223,372,036,854,775,808."

[ahe, 2017/08/03 17:10:16]

Thank you, let's follow what the document says, although it's author can't
remember what it says :-)

[alexmarkov, 2017/08/14 17:56:36]

Done.

[alexmarkov, 2017/08/14 17:56:36]

Done.