cppinit.c: Instead of one pending list...

1999-03-15 21:39 -0500  Zack Weinberg  <zack@rabi.columbia.edu>
	* cppinit.c: Instead of one pending list, keep separate lists
	for each category of pending option: -D/-U, -A, -include,
	-imacros.  Move the four partial include-path lists into the
	pending block.  Use head and tail pointers so we don't ever
	have to reverse the lists.
	(cpp_start_read): Break out blocks of code to their own
	functions: install_predefs and initialize_dependency_output.
	Use path_include for C_INCLUDE_PATH and friends as well as
	CPATH.  Remove include_defaults gunk.  Warn about the
	combination of -lang-chill and -trigraphs.  Optimize string
	bashing.  Walk each pending list once, deallocating as we go.
	(append_include_chain): Brought over from cppfiles.c.  Mark
	dirs as system include dirs if and only if appending to
	system include path. If opts->verbose, print a notice when a
	dir is dropped from the include path because it doesn't
	exist.  Fix memory leak: this function is not supposed to copy
	its DIR argument.
	(nreverse_pending, push_pending): Removed.
	(APPEND): New macro for adding to pending lists.
	(path_include): Can now add to any partial include path.
	(base_name): Bring over from cccp.c.
	(cpp_options_init): Allocate the pending block.
	(cpp_handle_option): Add --version.  Exit after --help.  Fix
	formatting.  Order -ifoo options by frequency of usage.
	(install_predefs): New function, simplified version of code
	that was in cpp_start_read.
	(initialize_dependency_output): Likewise.  Understand OBJECT_SUFFIX.
	* cppfiles.c (simplify_pathname): Export.
	(merge_include_chains):  Don't nreverse the lists.  If
	opts->verbose, print a notice when a duplicate dir is detected
	and dropped from the include path.
	(finclude): Fix excessive cleverness in setting
	fp->system_header_p.
	(actual_directory): Set x->sysp from
	CPP_BUFFER (pfile)->system_header_p so that one system header
	may include another with "".
	(deps_output): Fix double adjustment of deps_size which would
	cause all dependencies after the first two lines to be lost.
	* cpplib.c (cpp_unassert): New function.
	* cpplib.h: Lay out struct cpp_pending here.  Adjust
	prototypes.  Add include_prefix_len to struct cpp_options.

From-SVN: r25793

1 files changed, 13 insertions, 0 deletions

diff --git a/gcc/cpplib.c b/gcc/cpplib.c
index a46d5c7..c55eafa 100644
--- a/gcc/cpplib.c
+++ b/gcc/cpplib.c
@@ -2936,6 +2936,19 @@ do_unassert (pfile, keyword)
   return 1;
 }
 
+/* Process STR as if it appeared as the body of an #unassert. */
+void
+cpp_unassert (pfile, str)
+     cpp_reader *pfile;
+     unsigned char *str;
+{
+  if (cpp_push_buffer (pfile, str, strlen (str)) != NULL)
+    {
+      do_assert (pfile, NULL);
+      cpp_pop_buffer (pfile);
+    }
+}  
+
 int
 cpp_read_check_assertion (pfile)
      cpp_reader *pfile;