geninfo: Ignore empty .gcno files with --initial

oberpar · oberpar · commit 10b11eaa1789 · 2014-11-10T17:17:23.000+01:00
Some versions of GCC create empty .gcno files which cause geninfo
to abort processing with an error message:

  geninfo: ERROR: dummy.gcno: reached unexpected end of file

Fix this problem by skipping empty .gcno files.

Reported-by: Maarten Hoes &lt;hoes.maarten@gmail.com&gt;
Signed-off-by: Peter Oberparleiter &lt;oberpar@linux.vnet.ibm.com&gt;
diff --git a/bin/geninfo b/bin/geninfo
@@ -2288,6 +2288,13 @@ sub process_graphfile($$)
 		$base_dir = $source_dir;
 	}
 
+	# Ignore empty graph file (e.g. source file with no statement)
+	if (-z $graph_filename)
+	{
+		warn("WARNING: empty $graph_filename (skipped)\n");
+		return;
+	}
+
 	if ($gcov_version < $GCOV_VERSION_3_4_0)
 	{
 		if (is_compat($COMPAT_MODE_HAMMER))

Original file line number	Diff line number	Diff line change
`@@ -2288,6 +2288,13 @@ sub process_graphfile($$)`
`2288`	`2288`	`$base_dir = $source_dir;`
`2289`	`2289`	`}`
`2290`	`2290`
	`2291`	`+ # Ignore empty graph file (e.g. source file with no statement)`
	`2292`	`+ if (-z $graph_filename)`
	`2293`	`+ {`
	`2294`	`+ warn("WARNING: empty $graph_filename (skipped)\n");`
	`2295`	`+ return;`
	`2296`	`+ }`
	`2297`	`+`
`2291`	`2298`	`if ($gcov_version < $GCOV_VERSION_3_4_0)`
`2292`	`2299`	`{`
`2293`	`2300`	`if (is_compat($COMPAT_MODE_HAMMER))`