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proc: disable caching for variables with an extended location

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Our current frame caching strategy doesn't handle extended locations
expressions correctly, disable it on variables that don't have a simple
address.
This commit is contained in:
aarzilli
2018-01-27 16:50:18 +01:00
committed by Derek Parker
parent 03139e8f62
commit 62fe792bfd
3 changed files with 20 additions and 2 deletions
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3
pkg/proc/dwarf_expr_test.go
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@ -128,6 +128,7 @@ func TestDwarfExprComposite(t *testing.T) {
testCases := map[string]uint16{
"pair.k": 0x8765,
"pair.v": 0x5678,
"n": 42,
}
const stringVal = "this is a string"
@ -163,6 +164,7 @@ func TestDwarfExprComposite(t *testing.T) {
dwb.AddVariable("s", stringoff, dwarfbuilder.LocationBlock(
op.DW_OP_reg1, op.DW_OP_piece, uint(8),
op.DW_OP_reg0, op.DW_OP_piece, uint(8)))
dwb.AddVariable("n", intoff, dwarfbuilder.LocationBlock(op.DW_OP_reg3))
dwb.TagClose()
bi := fakeBinaryInfo(t, dwb)
@ -173,6 +175,7 @@ func TestDwarfExprComposite(t *testing.T) {
regs.Rax = uint64(len(stringVal))
regs.Rdx = defaultCFA + 18
regs.Rcx = uint64(testCases["pair.k"])
regs.Rbx = uint64(testCases["n"])
scope := dwarfExprCheck(t, mem, dwarfRegisters(&regs), bi, testCases)