Measured through libSceLibcInternal.sprx's snprintf in a payload process on a PS5 (firmware 13.60): any size is accepted, a NaN keeps its sign and the + and space flags, each UTF-16 unit of %ls and %lc is encoded alone, positions above 99 work, and an unknown conversion such as %m prints % and its letter.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Console title libc.prx (PPSA26344) and libSceLibcInternal export H-TDszhsYuY as STT_OBJECT st_size 104; titles that resolve it as data need thirteen zeroed uintptr_t slots.
The debt entry says the rule follows a static reading of the console's
wcsncat_s in libc.prx, that wcscat_s inherits it unread, and that the
narrow strncat_s keeps a wider rule, as asked in review.
Co-Authored-By: Claude <[email protected]>
FreeBSD 11.4's lookup() (sys/kern/vfs_lookup.c) fails with ENOTDIR when
a path with a trailing slash ends at something that is not a directory.
On Windows a mount alias dropped the slash, and the host calls do not
report ENOTDIR for "file\", so unlink, rename and open acted on the file
or failed with EINVAL. Guest path resolution now rejects an existing
non-directory named with a trailing slash with ENOTDIR on every host, and
a mount alias keeps the slash on Windows as it does on Linux and macOS.
setlocale returned a null pointer for a category outside 0 to 6 and
accepted "POSIX" as a name for "C". The libc.prx that titles ship
ignores the category, so setlocale(-1, NULL) and setlocale(7, "C")
return "C", and returns a null pointer for "POSIX" as for any name other
than "C" or the empty string.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
cbrtf returned the host cbrt, so its result depended on the host: on
Windows it differs from the libc.prx that titles ship on 1,303,357,444 of
the 2^32 floats. That libc.prx is msun's s_cbrtf.c, which gives the same
bits as PPSA07923's, PPSA05916's and PPSA13934's copies for every argument.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
They returned the host sin, cos and tan, so their last bit and errno
depended on the host: on Windows sinf differs from the libc.prx that titles
ship on 3,349,410 of the 2^32 floats, cosf on 3,382,210 and tanf on
303,874,018. That libc.prx is msun's s_sinf.c, s_cosf.c and s_tanf.c over
the double-precision kernels and e_rem_pio2f.c with k_rem_pio2.c; its
sincosf returns the same pair, and only an infinite argument sets EDOM.
The ports give the same bits and errno as PPSA07923's, PPSA05916's and
PPSA13934's copies for every argument.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
logf returned the host log, so its last bit and errno depended on the host:
on Windows the bits differ from the libc.prx that titles ship on 13,225,175
of the 2^32 floats. That libc.prx is msun's e_logf.c, setting ERANGE for
+-0 and EDOM for every argument with the sign bit set. The port gives the
same bits and errno as PPSA07923's and PPSA05916's copies for every
argument; the FMA-contracted copy of PPSA13934 differs by 1 ulp on 961,881.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
atanf returned the host atan, so its last bit depended on the host: on
Windows it differs from the libc.prx that titles ship on 6,481,820 of the
2^32 floats. That libc.prx is msun's s_atanf.c, which gives the same bits
as PPSA07923's, PPSA05916's and PPSA13934's copies for every argument.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
The fgetws in the libc.prx that titles ship (the same 133 bytes in the
copies of PPSA13934, PPSA07923 and PPSA05916, read from disassembly)
differs from this one in two cases:
- A size below 2 returns null at once, without writing the buffer,
errno or the stream (cmp $0x2,%esi; jge, else the null result). Here a
size of 1 stored a NUL and returned the buffer, and a size of 0 or less
set the stream error and errno 22.
- When fgetwc returns -1 after characters were stored, the console
null-terminates and returns the buffer; it returns null only when
nothing was stored, and never checks ferror. Here a read error after
some characters returned null.
The rest already matches: each fgetwc result is stored as its low 16 bits
(mov %ax,(%rbx)), and the newline test compares all 32 bits. A null buffer
or stream, which the console dereferences, keeps failing with errno 22.
guest_standard_streams now expects the console results for sizes 1, 0
and -1 and for an invalid byte after a stored character; its fgetwc error
indicator check is unchanged. The libc debt entry cites the reading and
what it leaves unverified.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
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