From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- ...multiple-lifetime-bounds-on-fns-where-clause.rs | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 src/test/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.rs (limited to 'src/test/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.rs') diff --git a/src/test/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.rs b/src/test/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.rs new file mode 100644 index 000000000..60dafdd52 --- /dev/null +++ b/src/test/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.rs @@ -0,0 +1,32 @@ +fn a<'a, 'b, 'c>(x: &mut &'a isize, y: &mut &'b isize, z: &mut &'c isize) where 'b: 'a + 'c { + // Note: this is legal because of the `'b:'a` declaration. + *x = *y; + *z = *y; +} + +fn b<'a, 'b, 'c>(x: &mut &'a isize, y: &mut &'b isize, z: &mut &'c isize) { + // Illegal now because there is no `'b:'a` declaration. + *x = *y; + *z = *y; +} + +fn c<'a,'b, 'c>(x: &mut &'a isize, y: &mut &'b isize, z: &mut &'c isize) { + // Here we try to call `foo` but do not know that `'a` and `'b` are + // related as required. + a(x, y, z); +} + +fn d() { + // 'a and 'b are early bound in the function `a` because they appear + // inconstraints: + let _: fn(&mut &isize, &mut &isize, &mut &isize) = a; + //~^ ERROR E0308 +} + +fn e() { + // 'a and 'b are late bound in the function `b` because there are + // no constraints: + let _: fn(&mut &isize, &mut &isize, &mut &isize) = b; +} + +fn main() { } -- cgit v1.2.3