Bug #21011: Constant massign segfaults in parse.y with shareable_constant_value: experimental_everything

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 3.5.0dev (2025-01-06T01:50:53Z master c8e3d745fa) [x86_64-linux]
• Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN

[tompng (tomoya ishida)]

This code segfaults with parse.y

# shareable_constant_value: experimental_everything
A,=1

$ ruby --parser=parse.y
# shareable_constant_value: experimental_everything
A,=1
-: [BUG] Segmentation fault at 0x0000000000000000
ruby 3.5.0dev (2025-01-06T01:50:53Z master c8e3d745fa) [x86_64-linux]

[nobu (Nobuyoshi Nakada)]

Even with prism:

# shareable_constant_value: experimental_everything
A, = ""
p A.frozen? #=> false

This A should be frozen?

Furthermore:

# shareable_constant_value: experimental_everything
A, a = "A", "a"
p A.frozen? #=> false
p a.frozen? #=> false

Should only A be frozen but not a?

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed

Applied in changeset git|b81db531b24a6824bf5b89d8460baed5d5418835.

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[Bug #21011] nd_value is NULL in massign