symbolizer: support discriminators in addr2line output

2 files changed, 20 insertions, 1 deletions

diff --git a/symbolizer/symbolizer.go b/symbolizer/symbolizer.go
index 7138c86ae..07356a48a 100644
--- a/symbolizer/symbolizer.go
+++ b/symbolizer/symbolizer.go
@@ -164,8 +164,12 @@ func parse(s *bufio.Scanner) ([]Frame, error) {
 		if colon == -1 {
 			return nil, fmt.Errorf("failed to parse file:line in addr2line output: %v", ln)
 		}
+		lineEnd := colon + 1
+		for lineEnd < len(ln) && ln[lineEnd] >= '0' && ln[lineEnd] <= '9' {
+			lineEnd++
+		}
 		file := ln[:colon]
-		line, err := strconv.Atoi(ln[colon+1:])
+		line, err := strconv.Atoi(ln[colon+1 : lineEnd])
 		if err != nil || fn == "" || fn == "??" || file == "" || file == "??" || line <= 0 {
 			continue
 		}
diff --git a/symbolizer/symbolizer_test.go b/symbolizer/symbolizer_test.go
index 3fd87e2a8..c7aeb48cb 100644
--- a/symbolizer/symbolizer_test.go
+++ b/symbolizer/symbolizer_test.go
@@ -85,6 +85,21 @@ func TestParse(t *testing.T) {
 				"??:0\n",
 			nil,
 		},
+		{
+			0xffffffff81a2aff9,
+			"0xffffffff81a2aff9\n" +
+				"devpts_get_priv\n" +
+				"fs/devpts/inode.c:588 (discriminator 3)\n",
+			[]Frame{
+				Frame{
+					PC:     0xffffffff81a2aff9,
+					Func:   "devpts_get_priv",
+					File:   "fs/devpts/inode.c",
+					Line:   588,
+					Inline: false,
+				},
+			},
+		},
 	}
 
 	// Stub addr2line.