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More words abot what a free function is allowed to do.

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This commit is contained in:
Marius Vollmer 2004-09-24 23:11:09 +00:00
parent 0ff7e3ff22
commit 1a82e37046
2 changed files with 8 additions and 0 deletions
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4
doc/ref/api-smobs.texi
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@ -55,6 +55,10 @@ directly associated with the smob instance @var{OBJ}. It must assume
that all @code{SCM} values that it references have already been freed
and are thus invalid.
It must also not call any libguile function or macro except
@code{scm_gc_free}, @code{SCM_SMOB_FLAGS}, @code{SCM_SMOB_DATA},
@code{SCM_SMOB_DATA_2}, and @code{SCM_SMOB_DATA_3}.
The @var{free} procedure must return 0.
@end deftypefn

4
doc/ref/libguile-smobs.texi
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@ -61,6 +61,10 @@ the size of the struct passed to @code{scm_make_smob_type} is non-zero)
using @code{scm_gc_free}. @xref{Garbage Collecting Smobs}, for more
details.
This function operates while the heap is in an inconsistent state and
must therefore be careful. @xref{Smobs}, for details about what this
function is allowed to do.
@item print
Guile will apply this function to each instance of the new type to print
the value, as for @code{display} or @code{write}. The default print