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doc/developer: Add terse documentation of assumed C implementation defined behavior 

Suggested-by: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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Michael Niedermayer 2017-04-28 02:50:42 +02:00
parent 63b8d4146d
commit b706ddbae3
1 changed files with 5 additions and 0 deletions
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doc/developer.texi
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@ -131,6 +131,11 @@ designated struct initializers (@samp{struct s x = @{ .i = 17 @};});
@item
compound literals (@samp{x = (struct s) @{ 17, 23 @};}).
@item
Implementation defined behavior for signed integers is assumed to match the
expected behavior for two's complement. Non representable values in integer
casts are binary truncated. Shift right of signed values uses sign extension.
@end itemize
These features are supported by all compilers we care about, so we will not