procyberian/emacs
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Overflow errors are range errors

Browse source 
* etc/NEWS: Mention this.
* doc/lispref/errors.texi (Standard Errors):
Document overflow-error, which was formerly undocumented.
It is a range error, not a domain error.
* src/data.c (syms_of_data): overflow-error and (undocumented)
underflow-error are subtypes range-error, not domain-error.
This fixes bugs in timezone-time-from-absolute and in
erc-ctcp-reply-PING.
This commit is contained in:
Paul Eggert 2019-11-04 23:17:06 -08:00
parent 5ab29400a4
commit 799d738bc7
3 changed files with 11 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
doc/lispref/errors.texi
View file

@ -163,6 +163,10 @@ The message is @samp{Attempt to modify a protected file}.
@item range-error
The message is @code{Arithmetic range error}.
@item overflow-error
The message is @samp{Arithmetic overflow error}. This is a subcategory
of @code{range-error}.
This can happen with integers exceeding the @code{integer-width} limit.
@xref{Integer Basics}.
@ -229,10 +233,6 @@ mathematical functions. @xref{Math Functions}.
@item domain-error
The message is @samp{Arithmetic domain error}.
@item overflow-error
The message is @samp{Arithmetic overflow error}. This is a subcategory
of @code{domain-error}.
@item singularity-error
The message is @samp{Arithmetic singularity error}. This is a
subcategory of @code{domain-error}.

5
etc/NEWS
View file

@ -2617,6 +2617,11 @@ like 'file-attributes' that compute file sizes and other attributes,
functions like 'process-id' that compute process IDs, and functions like
'user-uid' and 'group-gid' that compute user and group IDs.
+++
** overflow-error is now documented as a subcategory of range-error.
Formerly it was undocumented, and was (incorrectly) a subcategory
of domain-error.
** Time values
+++

4
src/data.c
View file

@ -3935,9 +3935,9 @@ syms_of_data (void)
PUT_ERROR (Qsingularity_error, Fcons (Qdomain_error, arith_tail),
"Arithmetic singularity error");
PUT_ERROR (Qoverflow_error, Fcons (Qdomain_error, arith_tail),
PUT_ERROR (Qoverflow_error, Fcons (Qrange_error, arith_tail),
"Arithmetic overflow error");
PUT_ERROR (Qunderflow_error, Fcons (Qdomain_error, arith_tail),
PUT_ERROR (Qunderflow_error, Fcons (Qrange_error, arith_tail),
"Arithmetic underflow error");
/* Types that type-of returns. */