Errata in K&R2 and H&S3 (was: Harbison & Steele)

Christopher Beierl beierl_c at apollo.HP.COM
Tue Apr 30 02:13:00 AEST 1991


In article <ndtg!6d at rpi.edu> xor at aix01.aix.rpi.edu (Joseph Schwartz) writes:
>... 
>I recently found an error in K&R2 (the "Draft-Proposed ANSI" printing).
>On page 164, it says that fputs "returns EOF if an error occurs, and
>zero otherwise."  It SHOULD say, "...and a non-negative value otherwise."
>They got it right on page 247, though.
> 
>I'm sure I'm not the first to notice this error, and I assume it's been
>corrected in later printings.  If an errata list exists, shouldn't it
>be included in the FAQ list?

Included below is an errata list for the FIRST printing of K&R2 (the
"Draft-Proposed ANSI" printing).  These should have been corrected in
subsequent printings.  The error indicated above is not on this list, and
has not been corrected as of the fifth printing (the most recent I have).

-Chris

(NOTE: This came from dmr at research.att.com in June '89)

Now that X3J11 has voted to send its draft to X3, and further
substantive changes in the draft standard are unlikely, Brian
and I are preparing fixes to put in any future printings
of the second edition of "The C Programming Language."
Fortunately, they are minor.  For the benefit of previous
and near-future purchasers, here are the changes that were made:

Two or three sentences in the Preface and Introduction are updated
to describe the state of the Standard.

atof is in stdlib.h, not math.h: changes 71, 76, 82, 121.

On page 86, error corrected:  missing automatic array initializers
are zero too.

On page 168: changed 1 to 1.0 in frand() to avoid potential overflow.

Minor typos are corrected on pages 87, 89, 164, 165, 180.

The inconspicuous references to 'noalias' on pages 192 and
212 are removed.

The following paragraph is added to the end of section A6.6 (p 199):

	A pointer may be converted to another pointer whose type
	is the same except for the addition or removal of qualifiers
	(A4.4, A8.2) of the object type to which the pointer
	refers.  If qualifiers are added, the new pointer is
	equivalent to the old except for restrictions implied
	by the new qualifiers.  If qualifiers are removed, operations
	on the underlying object remain subject to the qualifiers
	in its actual declaration.

On p. 199, beginning of section A6.8, "Any pointer may be converted
to type void *..." is changed to "Any pointer >to an object< may
be converted to type void *...".

On p. 204, A7.4.4, "The operand of the unary + operator must have
arithmetic or pointer type..." should read "must have arithmetic type...".

On p. 206, A7.9, about relational operators:  "Pointers to objects
of the same type may be compared..." is changed to "Pointers to
object of the same type >(ignoring any qualifiers)< may be compared...".

The indented material on p. 209, "According to the restrictions...
relaxing it." is removed.   [This is related to the paragraph added above.
The wording of the draft of a year ago made it useless to
take an (int *) pointer, cast it to (const int *), then cast
it back to (int *).]

On p. 219 middle, initialization of structures, add "Unnamed bit-field
members are ignored, and are not initialized."


Appendix B changes:

p 242:  add "fflush(NULL) flushes all output streams." to fflush description.

p 243:  change to "it must be called before reading, writing >or any
other operation<" in setvbuf description.

p 249:  add "Comparison functions treat arguments as unsigned char arrays."
to string.h description.

p 255:  change range of tm_sec to (0,61) for leap seconds.
	CLK_TCK was changed late (12/15/88) to CLOCKS_PER_SEC.

p 257:  drop U and L suffixes from <limits.h> constants.
	tm_sec range (00,61) here too.

Appendix C change:

p 261:  Change "External declarations without any specifiers..." to
	"External >data< declarations without any specifiers...".

The index has been reprinted to fix a couple of typos and account for
motion within Appendix A;  one page of the table of contents is changed.

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