ir: Ignore non-finite macro constants from macros.

Author: emilio

src/ir/var.rs

@@ -146,6 +146,11 @@ impl ClangSubItemParser for Var {
                 let (type_kind, val) = match value {
                     EvalResult::Invalid => return Err(ParseError::Continue),
                     EvalResult::Float(f) => {
+                        // Bail out if this number is not finite. We could
+                        // generate those, I guess, but its utility is unclear.
+                        if !f.is_finite() {
+                            return Err(ParseError::Continue);
+                        }
                         (TypeKind::Float(FloatKind::Float), VarType::Float(f))
                     }
                     EvalResult::Char(c) => {
@@ -178,9 +183,7 @@ impl ClangSubItemParser for Var {
                                 } else {
                                     IntKind::Int
                                 }
-                            } else if value >
-                                                         u32::max_value() as
-                                                         i64 {
+                            } else if value > u32::max_value() as i64 {
                                 IntKind::ULongLong
                             } else {
                                 IntKind::UInt

tests/expectations/tests/infinite-macro.rs

@@ -0,0 +1,7 @@
+/* automatically generated by rust-bindgen */
+
+
+#![allow(non_snake_case)]
+
+
+

tests/headers/infinite-macro.h

@@ -0,0 +1,2 @@
+#define INFINITY (1.0f/0.0f)
+#define NAN (0.0f/0.0f)