Re: Gnulib's tempname.c does not compile with TCC: max_align_t undefined

[Paul Eggert]

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.

Also, test-stdalign failed on Ubuntu 20.10 with tcc, since tcc's 
<stdalign.h> has a broken alignof when glibc headers like <stdint.h> are 
used. Glibc <stdint.h> defines __attribute__(x) to empty for compilers 
like tcc that do not define __GNUC__, but tcc's alignof relies on 
__attribute__. I installed the attached patch to try to work around that 
problem.

0001-stdalign-port-to-tcc-glibc.patch
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