Handle functions with no stack map entries.

randall77 · Oct 23, 2017 · 7301434 · 7301434
1 parent 3b81b64
commit 7301434
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Showing 2 changed files with 6 additions and 0 deletions.
diff --git a/gocore/parse.go b/gocore/parse.go
@@ -462,6 +462,8 @@ func (m *module) readFunc(r region, pcln region) *Func {
 	// Read pcln tables we need.
 	if stackmap := int(r.p.rtConstants["_PCDATA_StackMapIndex"]); stackmap < len(f.pcdata) {
 		f.stackMap.read(r.p.proc, pcln.SliceIndex(int64(f.pcdata[stackmap])).a)
+	} else {
+		f.stackMap.setEmpty()
 	}
 
 	return f

diff --git a/gocore/pctab.go b/gocore/pctab.go
@@ -48,6 +48,10 @@ func (p *pcTab) read(core *core.Process, data core.Address) {
 	}
 }
 
+func (p *pcTab) setEmpty() {
+	p.entries = []pcTabEntry{{bytes: 1<<63 - 1, val: -1}}
+}
+
 func (t *pcTab) find(off int64) int64 {
 	for _, e := range t.entries {
 		if off < e.bytes {