From de13718c66965852ba8970781908fa1eda9a54b9 Mon Sep 17 00:00:00 2001 From: Eval EXEC Date: Sun, 10 Aug 2025 23:02:53 +0800 Subject: test: Add rustdoc test for enum negative overflow --- tests/rustdoc/enum/enum-variant-value.rs | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'tests/rustdoc/enum/enum-variant-value.rs') diff --git a/tests/rustdoc/enum/enum-variant-value.rs b/tests/rustdoc/enum/enum-variant-value.rs index 1670de8a24f..9cc85dfe10d 100644 --- a/tests/rustdoc/enum/enum-variant-value.rs +++ b/tests/rustdoc/enum/enum-variant-value.rs @@ -189,3 +189,25 @@ pub use bar::P; //@ has - '//*[@id="variant.A"]/h3' 'A(u32)' //@ matches - '//*[@id="variant.B"]/h3' '^B$' pub use bar::Q; + +// Ensure signed implicit discriminants are rendered correctly after a negative explicit value. +//@ has 'foo/enum.R.html' +//@ has - '//*[@class="rust item-decl"]/code' 'A = -2,' +//@ has - '//*[@class="rust item-decl"]/code' 'B = -1,' +//@ matches - '//*[@id="variant.A"]/h3' '^A = -2$' +//@ matches - '//*[@id="variant.B"]/h3' '^B = -1$' +pub enum R { + A = -2, + B, +} + +// Also check that incrementing -1 yields 0 for the next implicit variant. +//@ has 'foo/enum.S.html' +//@ has - '//*[@class="rust item-decl"]/code' 'A = -1,' +//@ has - '//*[@class="rust item-decl"]/code' 'B = 0,' +//@ matches - '//*[@id="variant.A"]/h3' '^A = -1$' +//@ matches - '//*[@id="variant.B"]/h3' '^B = 0$' +pub enum S { + A = -1, + B, +} -- cgit 1.4.1-3-g733a5