Stowage/go
2
0
Fork 0
mirror of https://github.com/golang/go.git synced 2025-12-08 06:10:04 +00:00
Code Issues Projects Releases Packages Wiki Activity

cmd/compile: emit DIEs for zero sized variables

Browse source 
Fixes the compiler to emit DIEs for zero sized variables.

Fixes #54615

Change-Id: I1e0c86a97f1abcc7edae516b6a7fe35bcb65ed0f
Reviewed-on: https://go-review.googlesource.com/c/go/+/433479
Reviewed-by: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Alessandro Arzilli <alessandro.arzilli@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
This commit is contained in:
Alessandro Arzilli 2022-09-23 17:31:19 +02:00 • committed by Than McIntosh
parent 77296e3645
commit e59d873ff9
4 changed files with 71 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

15
src/cmd/compile/internal/dwarfgen/dwarf.go
View file

@ -151,6 +151,21 @@ func createDwarfVars(fnsym *obj.LSym, complexOK bool, fn *ir.Func, apDecls []*ir
} else {
decls, vars, selected = createSimpleVars(fnsym, apDecls)
}
if fn.DebugInfo != nil {
// Recover zero sized variables eliminated by the stackframe pass
for _, n := range fn.DebugInfo.(*ssa.FuncDebug).OptDcl {
if n.Class != ir.PAUTO {
continue
}
types.CalcSize(n.Type())
if n.Type().Size() == 0 {
decls = append(decls, n)
vars = append(vars, createSimpleVar(fnsym, n))
vars[len(vars)-1].StackOffset = 0
fnsym.Func().RecordAutoType(reflectdata.TypeLinksym(n.Type()))
}
}
}
dcl := apDecls
if fnsym.WasInlined() {