From: Paul Eggert Date: Fri, 22 Jan 2021 19:47:22 +0000 (-0800) Subject: Work around __has_attribute bug in clang 3.4 X-Git-Tag: emacs-28.0.90~4150 X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=b99ec5d5b11154bafb193ceaaac6976daafe3f82;p=emacs.git Work around __has_attribute bug in clang 3.4 * src/conf_post.h (HAS_ATTRIBUTE): * src/emacs-module.h.in (EMACS_ATTRIBUTE_NONNULL): Port to clang 3.4 and earlier. --- diff --git a/src/conf_post.h b/src/conf_post.h index bd56f29e287..176ab28b21a 100644 --- a/src/conf_post.h +++ b/src/conf_post.h @@ -71,7 +71,9 @@ typedef bool bool_bf; It is used only on arguments like cleanup that are handled here. This macro should be used only in #if expressions, as Oracle Studio 12.5's __has_attribute does not work in plain code. */ -#ifdef __has_attribute +#if (defined __has_attribute \ + && (!defined __clang_minor__ \ + || 3 < __clang_major__ + (5 <= __clang_minor__))) # define HAS_ATTRIBUTE(a) __has_attribute (__##a##__) #else # define HAS_ATTRIBUTE(a) HAS_ATTR_##a diff --git a/src/emacs-module.h.in b/src/emacs-module.h.in index 2989b439109..fe52587c1a5 100644 --- a/src/emacs-module.h.in +++ b/src/emacs-module.h.in @@ -51,7 +51,9 @@ information how to write modules and use this header file. #if 3 < __GNUC__ + (3 <= __GNUC_MINOR__) # define EMACS_ATTRIBUTE_NONNULL(...) \ __attribute__ ((__nonnull__ (__VA_ARGS__))) -#elif defined __has_attribute +#elif (defined __has_attribute \ + && (!defined __clang_minor__ \ + || 3 < __clang_major__ + (5 <= __clang_minor__))) # if __has_attribute (__nonnull__) # define EMACS_ATTRIBUTE_NONNULL(...) \ __attribute__ ((__nonnull__ (__VA_ARGS__)))