MSVC's implementation of signbit(x) uses sizeof(x) with expressions to
dispatch to an internal function based on the argument's type (float,
double, etc), but that raises a flag with MSVC's own static analyzer,
and because this is an inline function in a header it causes substantial
warning spam.
---
src/mesa/main/macros.h | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/mesa/main/macros.h b/src/mesa/main/macros.h
index 2d7a6a1..3344ec8 100644
--- a/src/mesa/main/macros.h
+++ b/src/mesa/main/macros.h
@@ -789,7 +789,14 @@ NORMALIZE_3FV(GLfloat v[3])
static inline GLboolean
DIFFERENT_SIGNS(GLfloat x, GLfloat y)
{
+#ifdef _MSC_VER
+#pragma warning( push )
+#pragma warning( disable : 6334 ) /* sizeof operator applied to an expression
with an operator may yield unexpected results */
+#endif
return signbit(x) != signbit(y);
+#ifdef _MSC_VER
+#pragma warning( pop )
+#endif
}
--
2.1.0
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