This patch allows the preprocessor to offer suggestions for misspelled
directives, taking us from e.g.:
test.c:5:2: error: invalid preprocessing directive #endfi
#endfi
^~~~~
to:
test.c:5:2: error: invalid preprocessing directive #endfi; did you mean #endif?
#endfi
^~~~~
endif
gcc/c-family/ChangeLog:
* c-common.c: Include "spellcheck.h".
(cb_get_suggestion): New function.
* c-common.h (cb_get_suggestion): New decl.
* c-lex.c (init_c_lex): Initialize cb->get_suggestion to
cb_get_suggestion.
gcc/testsuite/ChangeLog:
* gcc.dg/cpp/misspelled-directive-1.c: New testcase.
* gcc.dg/cpp/misspelled-directive-2.c: New testcase.
libcpp/ChangeLog:
* directives.c (directive_names): New array.
(_cpp_handle_directive): Offer spelling suggestions for misspelled
directives.
* errors.c (cpp_diagnostic_at_richloc): New function.
(cpp_error_at_richloc): New function.
* include/cpplib.h (struct cpp_callbacks): Add field
"get_suggestion".
(cpp_error_at_richloc): New decl.
From-SVN: r239585
cb18fd07f2