Memory exhausted error

I’m porting flex/bison on windows and build M4 code inside executable.

After upgrading gnulibs I caught a runtime error “memory exhausted” in macro.c file.

…

if (use_argc_stack)

obstack_free (&argc_stack, argv[0]);

else

obstack_free (&arguments, NULL);

obstack_blank (&argv_stack, -argc * sizeof (token_data *)); << crash here!!! Line 390

}

It seems now obstack_blank function doesn’t allow negative numbers (see /lib/obstack.h file)

Because obstack.temp.i has type as size_t (it was ptr_diff_t before).

Could you verify the following line works as expected in Linux?

obstack_blank (&argv_stack, -argc * sizeof (token_data *));

Best regards,

Alex