The following invalid code snippet generates a bogus error message since
GCC 3.1:
==========================
#define foo - ## >>
foo;
==========================
bug.c:2:1: error: pasting "->" and ">>" does not give a valid preprocessing
token
bug.c:2: error: expected identifier or '(' before '->' token
The problem is that we tried to paste "-" and ">>" and not "->" and ">>".
GCC 3.0.x produced a correct diagnostic.
--
Summary: [4.0/4.1/4.2 regression] Bad diagnostic pasting tokens
with ##
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: diagnostic, monitored
Severity: normal
Priority: P3
Component: preprocessor
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28709
