diff options
Diffstat (limited to 'libcpp/directives.c')
| -rw-r--r-- | libcpp/directives.c | 25 |
1 files changed, 23 insertions, 2 deletions
diff --git a/libcpp/directives.c b/libcpp/directives.c index 0eea67d..e08698d 100644 --- a/libcpp/directives.c +++ b/libcpp/directives.c @@ -1265,11 +1265,13 @@ do_pragma (cpp_reader *pfile) { const struct pragma_entry *p = NULL; const cpp_token *token, *pragma_token = pfile->cur_token; + cpp_token ns_token; unsigned int count = 1; pfile->state.prevent_expansion++; token = cpp_get_token (pfile); + ns_token = *token; if (token->type == CPP_NAME) { p = lookup_pragma_entry (pfile->pragmas, token->val.node); @@ -1318,7 +1320,22 @@ do_pragma (cpp_reader *pfile) } else if (pfile->cb.def_pragma) { - _cpp_backup_tokens (pfile, count); + if (count == 1 || pfile->context->prev == NULL) + _cpp_backup_tokens (pfile, count); + else + { + /* Invalid name comes from macro expansion, _cpp_backup_tokens + won't allow backing 2 tokens. */ + /* ??? The token buffer is leaked. Perhaps if def_pragma hook + reads both tokens, we could perhaps free it, but if it doesn't, + we don't know the exact lifespan. */ + cpp_token *toks = XNEWVEC (cpp_token, 2); + toks[0] = ns_token; + toks[0].flags |= NO_EXPAND; + toks[1] = *token; + toks[1].flags |= NO_EXPAND; + _cpp_push_token_context (pfile, NULL, toks, 2); + } pfile->cb.def_pragma (pfile, pfile->directive_line); } @@ -1494,6 +1511,7 @@ destringize_and_run (cpp_reader *pfile, const cpp_string *in) pfile->context = XNEW (cpp_context); pfile->context->macro = 0; pfile->context->prev = 0; + pfile->context->next = 0; /* Inline run_directive, since we need to delay the _cpp_pop_buffer until we've read all of the tokens that we want. */ @@ -1534,7 +1552,10 @@ destringize_and_run (cpp_reader *pfile, const cpp_string *in) maxcount = maxcount * 3 / 2; toks = XRESIZEVEC (cpp_token, toks, maxcount); } - toks[count++] = *cpp_get_token (pfile); + toks[count] = *cpp_get_token (pfile); + /* Macros have been already expanded by cpp_get_token + if the pragma allowed expansion. */ + toks[count++].flags |= NO_EXPAND; } while (toks[count-1].type != CPP_PRAGMA_EOL); } |