diff options
Diffstat (limited to 'libcpp/files.c')
| -rw-r--r-- | libcpp/files.c | 55 |
1 files changed, 44 insertions, 11 deletions
diff --git a/libcpp/files.c b/libcpp/files.c index 1adc58d..007fce77 100644 --- a/libcpp/files.c +++ b/libcpp/files.c @@ -1221,12 +1221,19 @@ cpp_change_file (cpp_reader *pfile, enum lc_reason reason, _cpp_do_file_change (pfile, reason, new_name, 1, 0); } +struct report_missing_guard_data +{ + const char **paths; + size_t count; +}; + /* Callback function for htab_traverse. */ static int -report_missing_guard (void **slot, void *b) +report_missing_guard (void **slot, void *d) { struct file_hash_entry *entry = (struct file_hash_entry *) *slot; - int *bannerp = (int *) b; + struct report_missing_guard_data *data + = (struct report_missing_guard_data *) d; /* Skip directories. */ if (entry->start_dir != NULL) @@ -1236,19 +1243,25 @@ report_missing_guard (void **slot, void *b) /* We don't want MI guard advice for the main file. */ if (file->cmacro == NULL && file->stack_count == 1 && !file->main_file) { - if (*bannerp == 0) + if (data->paths == NULL) { - fputs (_("Multiple include guards may be useful for:\n"), - stderr); - *bannerp = 1; + data->paths = XCNEWVEC (const char *, data->count); + data->count = 0; } - fputs (entry->u.file->path, stderr); - putc ('\n', stderr); + data->paths[data->count++] = file->path; } } - return 0; + /* Keep traversing the hash table. */ + return 1; +} + +/* Comparison function for qsort. */ +static int +report_missing_guard_cmp (const void *p1, const void *p2) +{ + return strcmp (*(const char *const *) p1, *(const char *const *) p2); } /* Report on all files that might benefit from a multiple include guard. @@ -1256,9 +1269,29 @@ report_missing_guard (void **slot, void *b) void _cpp_report_missing_guards (cpp_reader *pfile) { - int banner = 0; + struct report_missing_guard_data data; + + data.paths = NULL; + data.count = htab_elements (pfile->file_hash); + htab_traverse (pfile->file_hash, report_missing_guard, &data); - htab_traverse (pfile->file_hash, report_missing_guard, &banner); + if (data.paths != NULL) + { + size_t i; + + /* Sort the paths to avoid outputting them in hash table + order. */ + qsort (data.paths, data.count, sizeof (const char *), + report_missing_guard_cmp); + fputs (_("Multiple include guards may be useful for:\n"), + stderr); + for (i = 0; i < data.count; i++) + { + fputs (data.paths[i], stderr); + putc ('\n', stderr); + } + free (data.paths); + } } /* Locate HEADER, and determine whether it is newer than the current |