------- Comment #3 from redi at gcc dot gnu dot org 2010-05-12 14:16 ------- 2.12 Keywords [lex.key] 1 The identifiers shown in Table 3 are reserved for use as keywords (that is, they are unconditionally treated as keywords in phase 7) except in an attribute-token (7.6.1) [ Note: The export keyword is unused but is reserved for future use. end note ]:
N.B. "unconditionally treated as keywords" -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44097