src/lib/libc/stdio/vsnprintf.c, branch releng/11.3

Revert r330897:

2018-03-29T02:50:57Z

This was intended to be a non-functional change. It wasn't. The commit message was thus wrong. In addition it broke arm, and merged crypto related code. Revert with prejudice. This revert skips files touched in r316370 since that commit was since MFCed. This revert also skips files that require $FreeBSD$ property changes. Thank you to those who helped me get out of this mess including but not limited to gonzo, kevans, rgrimes. Requested by: gjb (re)

Partial merge of the SPDX changes

2018-03-14T03:19:51Z

These changes are incomplete but are making it difficult to determine what other changes can/should be merged. No objections from: pfg

Renumber clauses to reduce diffs to other versions

2013-04-23T13:33:13Z

NetBSD, OpenBSD, and Android's Bionic all number the clauses 1 through 3, so follow suit to make comparison easier. Acked-by: imp@

If the size passed to {,v}s{w,n}printf is larger than INT_MAX+1

2012-04-21T06:10:18Z

(i.e., the return value would overflow), set errno to EOVERFLOW and return an error. This improves the chances that buggy applications -- for instance, ones that pass in a negative integer as the size due to a bogus calculation -- will fail in safe ways. Returning an error in these situations is specified by POSIX, but POSIX appears to have an off-by-one error that isn't duplicated in this change. Previously, some of these functions would silently cap the size at INT_MAX+1, and others would exit with an error after writing more than INT_MAX characters. PR: 39256 MFC after: 2 weeks

Implement xlocale APIs from Darwin, mainly for use by libc++. This adds a

2011-11-20T14:45:42Z

load of _l suffixed versions of various standard library functions that use the global locale, making them take an explicit locale parameter. Also adds support for per-thread locales. This work was funded by the FreeBSD Foundation. Please test any code you have that uses the C standard locale functions! Reviewed by: das (gdtoa changes) Approved by: dim (mentor)

- Use an initializer macro to initialize fields in 'fake' FILE objects used

2010-03-11T17:03:32Z

by *sprintf(), etc. - Explicitly initialize _fl_mutex to PTHREAD_MUTEX_INITIALIZER for all FILE objects. This is currently a nop on FreeBSD, but is import for other platforms (or in the future) where PTHREAD_MUTEX_INITIALIZER is not simply zero. PR: threads/141198 Reported by: Jeremy Huddleston @ Apple MFC after: 2 weeks

Next stage of stdio cleanup: Retire __sFILEX and merge the fields back into

2008-04-17T22:17:54Z

__sFILE. This was supposed to be done in 6.0. Some notes: - Where possible I restored the various lines to their pre-__sFILEX state. - Retire INITEXTRA() and just initialize the wchar bits (orientation and mbstate) explicitly instead. The various places that used INITEXTRA didn't need the locking fields or _up initialized. (Some places needed _up to exist and not be off the end of a NULL or garbage pointer, but they didn't require it to be initialized to a specific value.) - For now, stdio.h "knows" that pthread_t is a 'struct pthread *' to avoid namespace pollution of including all the pthread types in stdio.h. Once we remove all the inlines and make __sFILE private it can go back to using pthread_t, etc. - This does not remove any of the inlines currently and does not change any of the public ABI of 'FILE'. MFC after: 1 month Reviewed by: peter

Per Regents of the University of Calfornia letter, remove advertising

2007-01-09T00:28:16Z

clause. # If I've done so improperly on a file, please let me know.

When size is 1 should just null terminate the string. The dummy variable

2003-07-02T07:08:44Z

is made an array of two, to explicitly avoid stack corruption due to null-terminating (which is doesn't actually happen due to stack alignment padding). Submitted by: Ed Moy Obtained from: Apple Computer, Inc.

Fix vsnprintf(3) memory leak for size == 0.

2002-09-17T11:28:24Z

PR: bin/36175 Obtained from: OpenBSD Reviewed by: silence on -audit MFC after: 5 days