Builtins defined with BT_FN_INT_VAR etc. show as functions without
a prototype and trigger the warning.
gcc/c/
PR c/119950
* c-typeck.cc (convert_arguments): Check for built-in
function declaration before warning.
gcc/testsuite/
* gcc.dg/Wdeprecated-non-prototype-5.c: New test.
---
gcc/c/c-typeck.cc | 3 ++-
gcc/testsuite/gcc.dg/Wdeprecated-non-prototype-5.c | 14 ++++++++++++++
2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/gcc/c/c-typeck.cc b/gcc/c/c-typeck.cc
index 55d896e02df..f8d1f711513 100644
--- a/gcc/c/c-typeck.cc
+++ b/gcc/c/c-typeck.cc
@@ -4342,7 +4342,8 @@ convert_arguments (location_t loc, vec<location_t>
arg_loc, tree fntype,
builtin_typetail = NULL_TREE;
}
- if (!typetail && parmnum == 0 && !TYPE_NO_NAMED_ARGS_STDARG_P (fntype))
+ if (!typetail && parmnum == 0 && !TYPE_NO_NAMED_ARGS_STDARG_P (fntype)
+ && !fndecl_built_in_p (fundecl))
{
auto_diagnostic_group d;
bool warned;
diff --git a/gcc/testsuite/gcc.dg/Wdeprecated-non-prototype-5.c
b/gcc/testsuite/gcc.dg/Wdeprecated-non-prototype-5.c
new file mode 100644
index 00000000000..b231a74cebe
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/Wdeprecated-non-prototype-5.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-Wdeprecated-non-prototype" } */
+
+static inline
+int f (int x)
+{
+ return __builtin_constant_p (x);
+}
+
+static inline
+int g (double x)
+{
+ return __builtin_isfinite (x);
+}
base-commit: 0035613389a939043d654aea7a76faae95f69422
