diff options
Diffstat (limited to 'pre-process.c')
| -rw-r--r-- | pre-process.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/pre-process.c b/pre-process.c index 950aea37..0a24f56e 100644 --- a/pre-process.c +++ b/pre-process.c @@ -596,6 +596,23 @@ static const char *token_name_sequence(struct token *token, int endop, struct to return buffer; } +static int already_tokenized(const char *path) +{ + int i; + struct stream *s = input_streams; + + for (i = input_stream_nr-1; i >= 0; i--, s++) { + if (s->constant != CONSTANT_FILE_YES) + continue; + if (strcmp(path, s->name)) + continue; + if (!lookup_symbol(s->protect, NS_MACRO)) + continue; + return 1; + } + return 0; +} + static int try_include(const char *path, int plen, const char *filename, int flen, struct token **where, const char **next_path) { int fd; @@ -607,6 +624,8 @@ static int try_include(const char *path, int plen, const char *filename, int fle plen++; } memcpy(fullname+plen, filename, flen); + if (already_tokenized(fullname)) + return 1; fd = open(fullname, O_RDONLY); if (fd >= 0) { char * streamname = __alloc_bytes(plen + flen); |