Sprinkle assertions and comments justifying the proposition that it
would never go negative if signed.
Obviates need to worry about mblength > SSIZE_MAX.
Prompted by PR lib/57573.
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It is initialized once either to *dlen, which is unsigned size_t, or
to wcslen(start) * MB_MAX_LEN + 1, and wcslen returns unsigned size_t
too. So there appears to have never been any reason for this to be
signed.
Part of PR lib/57573.
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Let's be consistent within these man pages. (If someone else really
likes the unpronounceable `.Ql \e0' better, that's fine, you can go
through and systematically change all the man pages to use that after
we're done clarifying strcpy(3), strncpy(3), and strlcpy(3).)
These are for substantively different purposes (fixed-width fields
with optional NUL padding vs NUL-terminated strings), so they don't
belong together.
Be more specific about the security issues.
this was triggering sh3 GCC 12 to fail compiles because of ssp.h's memcpy()
frontend having the always_inline attribute that didn't match -O0 or so.
tested with pkgsrc gcc9 to confirm it hangs there, but newer versions are fine.
also known as PR#55668, which now has a real fix (gcc 10 :-).
create a ptrdiff_t offset between the start of an allocation region and
some interesting pointer, so it can be adjusted with this offset after
realloc() returns.
found by GCC 12.
This is a string of _up to_ 16 bytes, used with strncpy(..., 16).
Specifying `const char descr[16]', while formally equivalent to
`const char *descr' in standard C, now provokes the ire of gcc when
the caller does not provide a buffer of at least 16 bytes.
if __kernel_rem_pio2() or __kernel_rem_pio2f() are called with "nx" less
than 2, the local variable fq[0] may be accessed uninitialised.
__kernel_rem_pio2() has direct calls with nx = 1, and __kernel_rem_pio2f()
is called with a value starting at 3, but may be decreased to less than 2,
implied by this code , if not actually avoided by the tx[] setup above:
nx = 3;
while(tx[nx-1]==zero) nx--; /* skip zero term */
n = __kernel_rem_pio2f(tx,y,e0,nx,2,two_over_pi);
found by GCC 12.
These are pretty bad -- these aren't transcendental functions; not
rocket science to make them correctly rounded -- but let's just make
sure they're available in libm for netbsd-10.
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rin