diff options
Diffstat (limited to 'gcc/input.cc')
| -rw-r--r-- | gcc/input.cc | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/input.cc b/gcc/input.cc index eaf301e..d1668ef 100644 --- a/gcc/input.cc +++ b/gcc/input.cc @@ -443,7 +443,10 @@ file_cache::evicted_cache_tab_entry (unsigned *highest_use_count) accessed by caret diagnostic. This cache is added to an array of cache and can be retrieved by lookup_file_in_cache_tab. This function returns the created cache. Note that only the last - num_file_slots files are cached. */ + num_file_slots files are cached. + + This can return nullptr if the FILE_PATH can't be opened for + reading, or if the content can't be converted to the input_charset. */ file_cache_slot* file_cache::add_file (const char *file_path) @@ -547,7 +550,10 @@ file_cache::~file_cache () /* Lookup the cache used for the content of a given file accessed by caret diagnostic. If no cached file was found, create a new cache for this file, add it to the array of cached file and return - it. */ + it. + + This can return nullptr on a cache miss if FILE_PATH can't be opened for + reading, or if the content can't be converted to the input_charset. */ file_cache_slot* file_cache::lookup_or_add_file (const char *file_path) @@ -1071,6 +1077,8 @@ get_source_file_content (const char *file_path) diagnostic_file_cache_init (); file_cache_slot *c = global_dc->m_file_cache->lookup_or_add_file (file_path); + if (c == nullptr) + return char_span (nullptr, 0); return c->get_full_file_content (); } |