diff options
Diffstat (limited to 'gcc/c-family/c-pch.c')
| -rw-r--r-- | gcc/c-family/c-pch.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/gcc/c-family/c-pch.c b/gcc/c-family/c-pch.c index b239ed4..f945f05 100644 --- a/gcc/c-family/c-pch.c +++ b/gcc/c-family/c-pch.c @@ -93,6 +93,10 @@ get_ident (void) return result; } +/* Whether preprocessor state should be saved by pch_init. */ + +static bool pch_ready_to_save_cpp_state = false; + /* Prepare to write a PCH file, if one is being written. This is called at the start of compilation. */ @@ -136,7 +140,31 @@ pch_init (void) /* Let the debugging format deal with the PCHness. */ (*debug_hooks->handle_pch) (0); - cpp_save_state (parse_in, f); + if (pch_ready_to_save_cpp_state) + pch_cpp_save_state (); +} + +/* Whether preprocessor state has been saved in a PCH file. */ + +static bool pch_cpp_state_saved = false; + +/* Save preprocessor state in a PCH file, after implicitly included + headers have been read. If the PCH file has not yet been opened, + record that state should be saved when it is opened. */ + +void +pch_cpp_save_state (void) +{ + if (!pch_cpp_state_saved) + { + if (pch_outfile) + { + cpp_save_state (parse_in, pch_outfile); + pch_cpp_state_saved = true; + } + else + pch_ready_to_save_cpp_state = true; + } } /* Write the PCH file. This is called at the end of a compilation which |