diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/compile/internal/ssa/debug.go | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/cmd/compile/internal/ssa/debug.go b/src/cmd/compile/internal/ssa/debug.go index 7407a75c41..c2736d837c 100644 --- a/src/cmd/compile/internal/ssa/debug.go +++ b/src/cmd/compile/internal/ssa/debug.go @@ -881,12 +881,11 @@ func (state *debugState) buildLocationLists(blockLocs []*BlockDebug) { for _, b := range state.f.Blocks { state.mergePredecessors(b, blockLocs, prevBlock) - // Handle any differences among predecessor blocks and previous block (perhaps not a predecessor) - for _, varID := range state.changedVars.contents() { - state.updateVar(VarID(varID), b, BlockStart) - } - if !blockLocs[b.ID].relevant { + // Handle any differences among predecessor blocks and previous block (perhaps not a predecessor) + for _, varID := range state.changedVars.contents() { + state.updateVar(VarID(varID), b, BlockStart) + } continue } @@ -1019,6 +1018,14 @@ func (state *debugState) writePendingEntry(varID VarID, endBlock, endValue ID) { // they get incomplete debug info on 32-bit platforms. return } + if start == end { + if state.loggingEnabled { + // Printf not logf so not gated by GOSSAFUNC; this should fire very rarely. + fmt.Printf("Skipping empty location list for %v in %s\n", state.vars[varID], state.f.Name) + } + return + } + list := state.lists[varID] list = appendPtr(state.ctxt, list, start) list = appendPtr(state.ctxt, list, end) |