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Give GCC more control flow information, so it can be sure that

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variables aren't used uninitialized.
* error.h (scm_error, scm_syserror, scm_syserror_msg,
scm_sysmissing, scm_num_overflow, scm_out_of_range,
scm_wrong_num_args, scm_wrong_type_arg, scm_memory_error,
scm_misc_error): Tell GCC that these functions never return.
* struct.c (scm_struct_ref, scm_struct_set_x): If we can't figure
out the field type, call abort if SCM_ASSERT returns, to placate
the optimizer.
* stacks.c (scm_make_stack, scm_last_stack_frame): abort if
scm_wta ever returns.  We can't handle this case anyway, and this
gives the optimizer more information.
* unif.c (scm_uniform_vector_ref, scm_array_set_x): Abort if
scm_wta ever returns.
This commit is contained in:
Jim Blandy 1996-12-18 21:39:44 +00:00
parent 1b306e1623
commit 3323ad081e
2 changed files with 33 additions and 12 deletions
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12
libguile/stacks.c
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@ -357,7 +357,11 @@ scm_make_stack (args)
dframe = (scm_debug_frame *) ((SCM_STACKITEM *) SCM_DFRAME (obj)
+ offset);
}
else scm_wta (obj, (char *) SCM_ARG1, s_make_stack);
else
{
scm_wta (obj, (char *) SCM_ARG1, s_make_stack);
abort ();
}
}
/* Count number of frames. Also get stack id tag and check whether
@ -511,7 +515,11 @@ scm_last_stack_frame (obj)
#endif
dframe = (scm_debug_frame *) ((SCM_STACKITEM *) SCM_DFRAME (obj) + offset);
}
else scm_wta (obj, (char *) SCM_ARG1, s_last_stack_frame);
else
{
scm_wta (obj, (char *) SCM_ARG1, s_last_stack_frame);
abort ();
}
if (!dframe || SCM_VOIDFRAMEP (*dframe))
return SCM_BOOL_F;