From 2c7ea98ccf6f747f4b5abf2a5bb6c052f72aff7f Mon Sep 17 00:00:00 2001
From: Dan Kegel <dkegel@fastly.com>
Date: Mon, 17 Jan 2022 11:39:01 -0800
Subject: [PATCH] runtime: add stubs for Func.FileLine and Frame.PC

With this, 'tinygo test' in github.com/pkg/errors at least compiles and passes a few tests:

    $ git clone github.com/pkg/errors
    $ cd errors
    $ tinygo test -c
    $ for a in $(go test -list Test | grep Test); do ./errors.test -test.run $a -test.v  > $a.log 2>&1; done
    $ grep -l PASS *.log | wc -l
      19
    $ grep -l FAIL *.log | wc -l
      11

For https://github.com/tinygo-org/tinygo/issues/2445
---
 src/runtime/stack.go  | 4 ++++
 src/runtime/symtab.go | 1 +
 2 files changed, 5 insertions(+)

diff --git a/src/runtime/stack.go b/src/runtime/stack.go
index 5ef9b7ad..c1522088 100644
--- a/src/runtime/stack.go
+++ b/src/runtime/stack.go
@@ -11,6 +11,10 @@ func (f *Func) Name() string {
 	return ""
 }
 
+func (f *Func) FileLine(pc uintptr) (file string, line int) {
+	return "", 0
+}
+
 func Caller(skip int) (pc uintptr, file string, line int, ok bool) {
 	return 0, "", 0, false
 }
diff --git a/src/runtime/symtab.go b/src/runtime/symtab.go
index 0a3ca3da..cfc9885d 100644
--- a/src/runtime/symtab.go
+++ b/src/runtime/symtab.go
@@ -9,6 +9,7 @@ type Frame struct {
 
 	File string
 	Line int
+	PC   uintptr
 }
 
 func CallersFrames(callers []uintptr) *Frames {