diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/runtime/mgcmark.go | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/runtime/mgcmark.go b/src/runtime/mgcmark.go index 7be2820909..ce3f63883e 100644 --- a/src/runtime/mgcmark.go +++ b/src/runtime/mgcmark.go @@ -839,9 +839,11 @@ func scanframeworker(frame *stkframe, cache *pcvalueCache, gcw *gcWork) { print("runtime: pcdata is ", pcdata, " and ", stkmap.n, " locals stack map entries for ", funcname(f), " (targetpc=", targetpc, ")\n") throw("scanframe: bad symbol table") } - bv := stackmapdata(stkmap, pcdata) - size = uintptr(bv.n) * sys.PtrSize - scanblock(frame.varp-size, size, bv.bytedata, gcw) + if stkmap.nbit > 0 { + bv := stackmapdata(stkmap, pcdata) + size = uintptr(bv.n) * sys.PtrSize + scanblock(frame.varp-size, size, bv.bytedata, gcw) + } } // Scan arguments. @@ -862,7 +864,9 @@ func scanframeworker(frame *stkframe, cache *pcvalueCache, gcw *gcWork) { } bv = stackmapdata(stkmap, pcdata) } - scanblock(frame.argp, uintptr(bv.n)*sys.PtrSize, bv.bytedata, gcw) + if bv.n > 0 { + scanblock(frame.argp, uintptr(bv.n)*sys.PtrSize, bv.bytedata, gcw) + } } } |