[binutils-gdb] [gdb/ada] Use c_isupper in ada_decode

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=87d2019c27d8af59ce602ba162e7b11852d60f3b

commit 87d2019c27d8af59ce602ba162e7b11852d60f3b
Author: Tom de Vries <[email protected]>
Date:   Tue Mar 24 14:58:11 2026 +0100

    [gdb/ada] Use c_isupper in ada_decode
    
    Commit cfe3a766e64 ("Change ada_decode to preserve upper-case in some
    situations") changed a use of c_isupper into isupper:
    ...
    $ git show cfe3a766e646| grep isupper
    +      else if (isupper (encoded[i]) || encoded[i] == ' ')
    -       if (c_isupper (decoded[i]) || decoded[i] == ' ')
    ...
    
    Apparently this was an oversight [1].
    
    Fix this by using c_isupper.
    
    Tested on x86_64-linux.
    
    Approved-By: Tom Tromey <[email protected]>
    
    [1] https://sourceware.org/pipermail/gdb-patches/2026-March/226136.html

Diff:
---
 gdb/ada-lang.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gdb/ada-lang.c b/gdb/ada-lang.c
index 1d1c021a51a..2772ce820b2 100644
--- a/gdb/ada-lang.c
+++ b/gdb/ada-lang.c
@@ -1559,7 +1559,7 @@ ada_decode (const char *encoded, bool wrap, bool translate)
 	  at_start_name = 1;
 	  i += 2;
 	}
-      else if (isupper (encoded[i]) || encoded[i] == ' ')
+      else if (c_isupper (encoded[i]) || encoded[i] == ' ')
 	{
 	  /* Decoded names should never contain any uppercase
 	     character.  */