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| author | Mateusz Poliwczak <mpoliwczak34@gmail.com> | 2026-02-28 12:05:10 +0100 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2026-03-04 13:26:19 -0800 |
| commit | b16360470c1eb574e8b7fa7a606810bf7cb6df7c (patch) | |
| tree | 3445f4e98a633fdc74e71dbab180d1d14969e704 /src | |
| parent | 50126a8e44f76134349edf5ba3cc94efabc61c80 (diff) | |
| download | go-b16360470c1eb574e8b7fa7a606810bf7cb6df7c.tar.xz | |
cmd/compile: fix ICE when indexing zero-sized arrays of non-SSAable types
Fixes #77868
Change-Id: I3348825e24a71595c514113497db365a6a6a6964
Reviewed-on: https://go-review.googlesource.com/c/go/+/749881
Reviewed-by: Keith Randall <khr@golang.org>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: David Chase <drchase@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/compile/internal/ssagen/ssa.go | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/cmd/compile/internal/ssagen/ssa.go b/src/cmd/compile/internal/ssagen/ssa.go index a86c940356..864f1708f8 100644 --- a/src/cmd/compile/internal/ssagen/ssa.go +++ b/src/cmd/compile/internal/ssagen/ssa.go @@ -3555,9 +3555,9 @@ func (s *state) exprCheckPtr(n ir.Node, checkPtrOK bool) *ssa.Value { // use constants for the bounds check. z := s.constInt(types.Types[types.TINT], 0) s.boundsCheck(z, z, ssa.BoundsIndex, false) - // The return value won't be live, return junk. - // But not quite junk, in case bounds checks are turned off. See issue 48092. - return s.zeroVal(n.Type()) + // The return value won't be live. In case bounds checks + // are turned off, load from (*T)(nil) to cause a segfault. + return s.load(n.Type(), s.constNil(n.Type().PtrTo())) } len := s.constInt(types.Types[types.TINT], bound) s.boundsCheck(i, len, ssa.BoundsIndex, n.Bounded()) // checks i == 0 |