diff options
Diffstat (limited to 'gcc/cppinit.c')
| -rw-r--r-- | gcc/cppinit.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/cppinit.c b/gcc/cppinit.c index f9bc306..7269c56 100644 --- a/gcc/cppinit.c +++ b/gcc/cppinit.c @@ -961,6 +961,11 @@ cpp_start_read (pfile, fname) cpp_message (pfile, -1, "End of search list.\n"); } + /* Don't bother trying to do macro expansion if we've already done + preprocessing. */ + if (opts->preprocessed) + pfile->no_macro_expand++; + /* Open the main input file. We do this in nonblocking mode so we don't get stuck here if someone clever has asked cpp to process /dev/rmt0; @@ -988,7 +993,13 @@ cpp_start_read (pfile, fname) ih_fake->limit = 0; if (!finclude (pfile, f, ih_fake)) return 0; - output_line_command (pfile, same_file); + if (opts->preprocessed) + /* If we've already processed this code, we want to trust the #line + directives in the input. But we still need to update our line + counter accordingly. */ + pfile->lineno = CPP_BUFFER (pfile)->lineno; + else + output_line_command (pfile, same_file); pfile->only_seen_white = 2; /* The -imacros files can be scanned now, but the -include files @@ -1155,6 +1166,10 @@ cpp_handle_option (pfile, argc, argv) user_label_prefix = "_"; else if (!strcmp (argv[i], "-fno-leading-underscore")) user_label_prefix = ""; + else if (!strcmp (argv[i], "-fpreprocessed")) + opts->preprocessed = 1; + else if (!strcmp (argv[i], "-fno-preprocessed")) + opts->preprocessed = 0; break; case 'I': /* Add directory to path for includes. */ |