Original bug ID: 6965
Reporter: joe
Assigned to: @gasche
Status: closed (set by @diml on 2016-12-07T17:25:07Z)
Resolution: duplicate
Priority: normal
Severity: minor
Version: 4.02.3
Category: -for Camlp4 use https://github.com/ocaml/camlp4/issues

Bug description

The quoted string extension doesn't appear to work with the camlp4o preprocessor. For example, the program:

$ cat junk.ml
let _ = {|Hello World!|}

compiles normally

$ ocamlc junk.ml

However, if we use the camlp4o preprocessor, it fails

$ ocamlc -pp "camlp4o" junk.ml
File "junk.ml", line 1, characters 6-7:
Parse error: [expr] expected after "=" (in [cvalue_binding])
File "junk.ml", line 1:
Error: Error while running external preprocessor
Command line: camlp4o 'junk.ml' > /tmp/ocamlpp2e9797

This also occurs when using camlp4o on the toplevel:

{|Hello World!|};;

Error: Parse error: illegal begin of top_phrase