[gcc/devel/rust/master] Add a new test for float disambiguation

[Thomas Schwinge via Gcc-cvs]

https://gcc.gnu.org/g:fd7d577a3e1f249e35e66b7d19e5bfbf502c0a82

commit fd7d577a3e1f249e35e66b7d19e5bfbf502c0a82
Author: Pierre-Emmanuel Patry <pierre-emmanuel.pa...@embecosm.com>
Date:   Tue Oct 31 15:43:51 2023 +0100

    Add a new test for float disambiguation
    
    This new regression test highlight the behavior fixed for float
    disambiguation with empty floating point.
    
    gcc/testsuite/ChangeLog:
    
            * rust/compile/tuple_float_index.rs: New test.
    
    Signed-off-by: Pierre-Emmanuel Patry <pierre-emmanuel.pa...@embecosm.com>

Diff:
---
 gcc/testsuite/rust/compile/tuple_float_index.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gcc/testsuite/rust/compile/tuple_float_index.rs 
b/gcc/testsuite/rust/compile/tuple_float_index.rs
new file mode 100644
index 000000000000..87410c5708d7
--- /dev/null
+++ b/gcc/testsuite/rust/compile/tuple_float_index.rs
@@ -0,0 +1,6 @@
+fn main() {
+    let tuple = (((),()),);
+
+    // Do not reformat, the space after the second dot is required
+    let _ = tuple.0. 1;
+}