diff options
Diffstat (limited to 'gcc/cppfiles.c')
| -rw-r--r-- | gcc/cppfiles.c | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/gcc/cppfiles.c b/gcc/cppfiles.c index 9db981c..f455162 100644 --- a/gcc/cppfiles.c +++ b/gcc/cppfiles.c @@ -154,8 +154,10 @@ struct file_hash_entry }; static bool open_file (_cpp_file *file); -static bool pch_open_file (cpp_reader *pfile, _cpp_file *file); -static bool find_file_in_dir (cpp_reader *pfile, _cpp_file *file); +static bool pch_open_file (cpp_reader *pfile, _cpp_file *file, + bool *invalid_pch); +static bool find_file_in_dir (cpp_reader *pfile, _cpp_file *file, + bool *invalid_pch); static bool read_file_guts (cpp_reader *pfile, _cpp_file *file); static bool read_file (cpp_reader *pfile, _cpp_file *file); static bool should_stack_file (cpp_reader *, _cpp_file *file, bool import); @@ -234,9 +236,13 @@ open_file (_cpp_file *file) return false; } -/* Temporary PCH intercept of opening a file. */ +/* Temporary PCH intercept of opening a file. Try to find a PCH file + based on FILE->name and FILE->dir, and test those found for + validity using PFILE->cb.valid_pch. Return true iff a valid file is + found. Set *INVALID_PCH if a PCH file is found but wasn't valid. */ + static bool -pch_open_file (cpp_reader *pfile, _cpp_file *file) +pch_open_file (cpp_reader *pfile, _cpp_file *file, bool *invalid_pch) { static const char extension[] = ".gch"; const char *path = file->path; @@ -285,6 +291,7 @@ pch_open_file (cpp_reader *pfile, _cpp_file *file) closedir (pchdir); } file->pch |= valid; + *invalid_pch |= ! valid; } if (valid) @@ -297,9 +304,11 @@ pch_open_file (cpp_reader *pfile, _cpp_file *file) /* Try to open the path FILE->name appended to FILE->dir. This is where remap and PCH intercept the file lookup process. Return true - if the file was found, whether or not the open was successful. */ + if the file was found, whether or not the open was successful. + Set *INVALID_PCH to true if a PCH file is found but wasn't valid. */ + static bool -find_file_in_dir (cpp_reader *pfile, _cpp_file *file) +find_file_in_dir (cpp_reader *pfile, _cpp_file *file, bool *invalid_pch) { char *path; @@ -309,7 +318,7 @@ find_file_in_dir (cpp_reader *pfile, _cpp_file *file) path = append_file_to_dir (file->name, file->dir); file->path = path; - if (pch_open_file (pfile, file)) + if (pch_open_file (pfile, file, invalid_pch)) return true; if (open_file (file)) @@ -351,6 +360,7 @@ _cpp_find_file (cpp_reader *pfile, const char *fname, cpp_dir *start_dir, bool f { struct file_hash_entry *entry, **hash_slot; _cpp_file *file; + bool invalid_pch = false; /* Ensure we get no confusion between cached files and directories. */ if (start_dir == NULL) @@ -369,13 +379,21 @@ _cpp_find_file (cpp_reader *pfile, const char *fname, cpp_dir *start_dir, bool f /* Try each path in the include chain. */ for (; !fake ;) { - if (find_file_in_dir (pfile, file)) + if (find_file_in_dir (pfile, file, &invalid_pch)) break; file->dir = file->dir->next; if (file->dir == NULL) { open_file_failed (pfile, file); + if (invalid_pch) + { + cpp_error (pfile, CPP_DL_ERROR, + "One or more PCH files were found, but they were invalid."); + if (! cpp_get_options (pfile)->warn_invalid_pch) + cpp_error (pfile, CPP_DL_ERROR, + "Use -Winvalid-pch for more information."); + } break; } |