Re: [Tinycc-devel] tcc(1) from current [mob] doesn't recognize "const" attribute suffix

[Michael Matz]

Hi,

On Thu, 24 Mar 2016, Steffen Nurpmeso wrote:

> |>   tcc: x86_64-gen.c:421: load: Assertion `((ft & VT_BTYPE) == VT_IN\
> |>   T) || ((ft & VT_BTYPE) == VT_LLONG) || ((ft & VT_BTYPE) == VT_PTR\
> |>   ) || ((ft & VT_BTYPE) == VT_ENUM) || ((ft & VT_BTYPE) == VT_FUNC)\
> |>   ' failed.
> |>   /bin/sh: line 3: 20505 Aborted                 (core dumped) /hom\
> |>   e/sdaoden/usr/opt/tcc-mob/bin/tcc -Wall -Wextra -pedantic -b -g -\
> |>   I/home/sdaoden/usr/include -I/usr/local/include -I/usr/include -c tty.c
> |
> |Can't reproduce, please provide a testcase.
>
> I still can.  I'll attach a heavily vaporised variant of the
> source in question, just run "make build" and it should happen --
...
>  tcc: x86_64-gen.c:421: load: Assertion `((ft & VT_BTYPE) == VT_INT) || ((ft & VT_BTYPE) == 
> VT_LLONG) || ((ft & VT_BTYPE) == VT_PTR) || ((ft & VT_BTYPE) == VT_ENUM) || ((ft & 
> VT_BTYPE) == VT_FUNC)' failed.
>  /bin/sh: line 3: 22918 Aborted                 (core dumped) 
> /home/sdaoden/usr/opt/tcc-mob/bin/tcc -Wall -Wextra -pedantic -b -g 
> -I/home/sdaoden/usr/include -I/usr/local/include -I/usr/include -c tty.c

Thanks for the testcase.  The problem is ideosyncratic use of volatile:

  char c;
  char volatile vc;
  vc = c;

Here volatile doesn't make much sense, but tripped TCCs assertions.
Fixed in mob.  Thanks again for the report.


Ciao,
Michael.