From: Richard Stallman Date: Tue, 6 Jul 1993 06:32:24 +0000 (+0000) Subject: (convert_arguments): Don't warn for -Wconversion about signedness of an arg... X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ce9895ae049805bdb4f2ef771f9fa41487641dfd;p=gcc.git (convert_arguments): Don't warn for -Wconversion about signedness of an arg... (convert_arguments): Don't warn for -Wconversion about signedness of an arg that's extended from narrower unsigned type. From-SVN: r4857 --- diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c index 00de4cbddbb..33b20c6514f 100644 --- a/gcc/c-typeck.c +++ b/gcc/c-typeck.c @@ -2079,6 +2079,13 @@ convert_arguments (typelist, values, name, fundecl) /* Change in signedness doesn't matter if an enum value is unaffected. */ ; + /* If the value is extended from a narrower + unsigned type, it doesn't matter whether we + pass it as signed or unsigned; the value + certainly is the same either way. */ + else if (TYPE_PRECISION (TREE_TYPE (val)) < TYPE_PRECISION (type) + && TREE_UNSIGNED (TREE_TYPE (val))) + ; else if (TREE_UNSIGNED (type)) warn_for_assignment ("%s as unsigned due to prototype", (char *) 0, name, parmnum + 1); else