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Subject: Re: EXTERNAL: Re: Guile 1.8 Garbage Collection Question
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> {
>   // Storage for temporary string
>   char* s = NULL;
> 
>   scm_dynwind_begin (0);
>   s = scm_to_locale_string (scm_val);
> 
>   fstWriterEmitValueChange(SCM_TO_CTX (scm_ctx),
> 			   SCM_TO_FSTHANDLE (scm_fsthandle),
> 			   s);
>   scm_dynwind_free (s);
>   scm_dynwind_end();
> 
>   return SCM_UNSPECIFIED;
> }

You are supposed to call scm_dynwind_free(s) before anything that can
throw, ie right after the call to scm_to_locale_string(), IMHO.