gcov.c (struct arc_info): Add is_throw field.

	* gcov.c (struct arc_info): Add is_throw field.
	(struct (block_info): Add exceptional field, reduce flags size to
	account for it.
	(struct function_info): Add has_catch field.
	(struct line_info): Add unexceptional field.
	(process_file): Call find_exception_blocks if necessary.
	(read_graph_file): Adjust.  Note if an exceptional edge is seen.
	(find_exception_blocks): New.
	(add_line_counts): Set line's unexceptional flag if not
	exceptional.
	(output_branch_count): Note exceptional arcs, lines and blocks.
	* gcov-dump.c (tag_arcs): Decode arc flags.
	* doc/gcov.texi: Document '=====' lines.

	testsuite/
	* lib/gcov.exp (verify-lines): Allow = as a count char.
	* g++.dg/gcov/gcov-13.C: New.

From-SVN: r181949

1 files changed, 6 insertions, 3 deletions

diff --git a/gcc/doc/gcov.texi b/gcc/doc/gcov.texi
index 640d52e1284..e771f72e402 100644
--- a/gcc/doc/gcov.texi
+++ b/gcc/doc/gcov.texi
@@ -261,10 +261,13 @@ program source code.  The format is
 
 Additional block information may succeed each line, when requested by
 command line option.  The @var{execution_count} is @samp{-} for lines
-containing no code and @samp{#####} for lines which were never executed.
-Some lines of information at the start have @var{line_number} of zero.
+containing no code.  Unexecuted lines are marked @samp{#####} or
+@samp{====}, depending on whether they are reachable by
+non-exceptional paths or only exceptional paths such as C++ exception
+handlers, respectively.
 
-The preamble lines are of the form
+Some lines of information at the start have @var{line_number} of zero.
+These preamble lines are of the form
 
 @smallexample
 -:0:@var{tag}:@var{value}