Paul Eggert wrote:
> On 3/2/21 7:09 PM, Bruno Haible wrote:
> > + /* On TinyCC, make sure that the macros that indicate the special
> > invocation
> > + convention get undefined. */
> > +# ifdef __TINYC__
> > +# undef __need_wchar_t
> > +# undef __need_size_t
>
> Would it be more robust to omit the "#ifdef __TINYC__" line, and
> unconditionally undef those macros? That won't hurt GCC, and it should
> help with any compiler (not just tcc) that is incompatible with GCC in
> this respect.
Good point. I had considered it, but I'm too cautious sometimes :)
Fixed as below.
Also, macOS has the same convention regarding __need_* macros in <stddef.h>
as glibc. Therefore, the bug Luca was seeing on a glibc system most likely
also exists on macOS.
2021-03-04 Bruno Haible <br...@clisp.org>
stddef: Generalize tcc workaround to other compilers.
Suggested by Paul Eggert in
<https://lists.gnu.org/archive/html/bug-gnulib/2021-03/msg00027.html>.
* lib/stddef.in.h: Undefine the __need_* macros with all compilers.
* doc/posix-headers/stddef.texi: Mention that the TinyCC bug also exists
on macOS.
diff --git a/doc/posix-headers/stddef.texi b/doc/posix-headers/stddef.texi
index ba27fa8..fe7ed26 100644
--- a/doc/posix-headers/stddef.texi
+++ b/doc/posix-headers/stddef.texi
@@ -29,8 +29,8 @@ of a pointer:
AIX 7.2 with xlc in 64-bit mode.
@item
-When this header file is provided by TinyCC 0.9.27 on glibc systems, it does
-not fulfil the expectations of other glibc header files.
+When this header file is provided by TinyCC 0.9.27 on glibc or macOS systems,
+it does not fulfil the expectations of other system header files.
@end itemize
Portability problems not fixed by Gnulib:
diff --git a/lib/stddef.in.h b/lib/stddef.in.h
index 590e12c..a1fc80c 100644
--- a/lib/stddef.in.h
+++ b/lib/stddef.in.h
@@ -44,13 +44,11 @@
# @INCLUDE_NEXT@ @NEXT_STDDEF_H@
/* On TinyCC, make sure that the macros that indicate the special invocation
convention get undefined. */
-# ifdef __TINYC__
-# undef __need_wchar_t
-# undef __need_size_t
-# undef __need_ptrdiff_t
-# undef __need_NULL
-# undef __need_wint_t
-# endif
+# undef __need_wchar_t
+# undef __need_size_t
+# undef __need_ptrdiff_t
+# undef __need_NULL
+# undef __need_wint_t
# endif
#else
