Tue Sep 15 14:10:54 EDT 1998 Andrew MacLeod <amacleod@cygnus.com>

        * except.h (struct eh_entry): Add false_label field.
        (end_catch_handler): Add prototype.
        * except.c (push_eh_entry): Set false_label field to NULL_RTX.
        (start_catch_handler): When using old style exceptions, issue
        runtime typematch code before continuing with the handler.
        (end_catch_handler): New function, generates label after handler
        if needed by older style exceptions.
        (expand_start_all_catch): No need to check for new style exceptions.
        (output_exception_table_entry): Only output the first handler label
        for old style exceptions.
        * libgcc2.c (__eh_rtime_match): New routine to lump runtime matching
        mechanism into one function, if a runtime matcher is provided.
1998-09-15  Andrew MacLeod  <amacleod@cygnus.com>
        * cp/except.c (expand_start_catch_block): No need to check for new
        exception model.
        (process_start_catch_block_old): Deleted.
        (process_start_catch_block): Add call to start_decl_1().
        (expand_end_catch_block): Add call to end_catch_handler().
        * cp/exception.cc (__cplus_type_matcher): Only check the exception
        language if there is an exception table.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22425 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 9 insertions, 0 deletions

diff --git a/gcc/except.h b/gcc/except.h
index d20b6067cb0..5416e598760 100644
--- a/gcc/except.h
+++ b/gcc/except.h
@@ -53,6 +53,10 @@ struct label_node {
    label or not. New ones are needed for additional catch blocks if
    it has.
 
+   FALSE_LABEL is used when either setjmp/longjmp exceptions are in
+   use, or old style table exceptions. It contains the label for 
+   branching to the next runtime type check as handlers are processed.
+
    FINALIZATION is the tree codes for the handler, or is NULL_TREE if
    one hasn't been generated yet, or is integer_zero_node to mark the
    end of a group of try blocks.  */
@@ -62,6 +66,7 @@ struct eh_entry {
   rtx exception_handler_label;
   tree finalization;
   int label_used;
+  rtx false_label;
 };
 
 /* A list of EH_ENTRYs. ENTRY is the entry; CHAIN points to the next
@@ -237,6 +242,10 @@ extern void add_eh_table_entry			PROTO((int n));
 extern void start_catch_handler                 PROTO((tree));
 #endif
 
+/* End an individual catch clause. */
+
+extern void end_catch_handler                   PROTO((void));
+
 /* Returns a non-zero value if we need to output an exception table.  */
 
 extern int exception_table_p			PROTO((void));