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This has basically been copied over from Musl and slightly modifed.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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When compiling with GCC4 the following error occurs.
> lib/util/rbtree.c:140: undefined reference to `__builtin_uaddl_overflow'
This is because __builtin_uaddl_overflow() and the other
__builtin_u{add,mul}{,l,ll}_overflow() functions are only defined in
GNUC < 5 for Clang. When using GCC4 and below they are not defined.
Since the SZ_ADD_OV and SZ_MUL_OV are only used to check 'size_t' type
values. And overflow on add and multiply of unsigned types is defined
behaviour (C Standard 6.2.5 paragraph 9). It's simple to write overflow
functions for this specific case. These are based on the overflow
wrappers from the SEI CERT C Standard INT30-C.
[1] https://gcc.gnu.org/gcc-5/changes.html
Signed-off-by: Brandon Maier <brandon.maier@rockwellcollins.com>
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The PRIu64 et al are missing a "%" sign in front.
Fixes: aaf7e68c75a907c3c08e83dfd2972665a0f1c1a3
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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sys/sysmacros.h is an implementation of GNU libc, so include it
unconditionally when that libc is used.
Signed-off-by: Pino Toscano <toscano.pino@tiscali.it>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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There were only a hand full of instances outside libsquashfs that used
the alloc code. In most cases, the thing allocated hat its size derived
from something already in memory anyway, so it is safe to assume its
size fits into a size_t.
At the same time, the opencoded Windows path conversion functions are
all unified into a single helper function.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- Make sure the mockup constant for AT_FDCWD is actualy an int
- Don't use %lld printf format specified, mscrt doesn't have that
- On 64 bit windows, use %I64u format specified for size_t
- Seperate the overflow macro stuff from the form specifier stuff
- Move the whole thing to compat.h and clean it up a little so
it becomes readable.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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In most cases, including unistd.h and fcntl.h was a left over anyway.
In the cases where it was not, move it to compat.h.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Not pretty, but definitely prettier than #ifdef hell.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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- We don't have "endian.h" everywhere. On some BSDs its in sys and
on some BSDs the macros have different names.
- We definitely don't have sysmacros.h on non-Unix-like systems.
- Likewise for sys/types.h, sys/stat.h and their contents.
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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