diff options
| author | neil <neil@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-09-15 05:55:36 +0000 |
|---|---|---|
| committer | neil <neil@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-09-15 05:55:36 +0000 |
| commit | 58fe658af285434b1503da8ac2f9e7568efc412e (patch) | |
| tree | 46b2b60f181bbf21ca0786fa960ec2f8d89df671 /gcc/cpplex.c | |
| parent | e997907c089705ad824296adf9131edcfa978ea7 (diff) | |
| download | gcc-58fe658af285434b1503da8ac2f9e7568efc412e.tar.gz | |
* cpplex.c (ON_REST_ARG): Correct the test.
(maybe_paste_with_next): Duplicate a token that fail pasting,
and clear its PASTE_LEFT flag, so that nested pasting attempts
do not occur.
* gcc.dg/cpp/paste10.c: Testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@36424 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cpplex.c')
| -rw-r--r-- | gcc/cpplex.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/gcc/cpplex.c b/gcc/cpplex.c index 5cb6b7f7611..56b8543f995 100644 --- a/gcc/cpplex.c +++ b/gcc/cpplex.c @@ -201,9 +201,9 @@ TOKEN_LEN (token) #define IS_ARG_CONTEXT(c) ((c)->flags & CONTEXT_ARG) #define CURRENT_CONTEXT(pfile) ((pfile)->contexts + (pfile)->cur_context) #define ON_REST_ARG(c) \ - (((c)->flags & VAR_ARGS) \ - && ((c)-1)->u.list->tokens[((c)-1)->posn - 1].val.aux \ - == (unsigned int) (((c)-1)->u.list->paramc - 1)) + (((c)->u.list->flags & VAR_ARGS) \ + && (c)->u.list->tokens[(c)->posn - 1].val.aux \ + == (unsigned int) ((c)->u.list->paramc - 1)) #define ASSIGN_FLAGS_AND_POS(d, s) \ do {(d)->flags = (s)->flags & (PREV_WHITE | BOL | PASTE_LEFT); \ @@ -2787,14 +2787,17 @@ maybe_paste_with_next (pfile, token) the special extended semantics (see above). */ if (token->type == CPP_COMMA && IS_ARG_CONTEXT (CURRENT_CONTEXT (pfile)) - && ON_REST_ARG (CURRENT_CONTEXT (pfile))) + && ON_REST_ARG (CURRENT_CONTEXT (pfile) - 1)) /* no warning */; else cpp_warning (pfile, "pasting would not give a valid preprocessing token"); } _cpp_push_token (pfile, second); - return token; + /* A short term hack to safely clear the PASTE_LEFT flag. */ + pasted = duplicate_token (pfile, token); + pasted->flags &= ~PASTE_LEFT; + return pasted; } if (type == CPP_NAME || type == CPP_NUMBER) |