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Add a collection of tests for formatted scanf input specifiers covering
the b, d, i, o, u, x, and X integer conversions, the a, A, e, E, f, F,
g, and G floating-point conversions, and the [, c, and s character
conversions. Also the hh, h, l, and ll length modifiers are covered
with the integer conversions as are the l and L length modifier with the
floating-point conversions. The tests cover assignment suppressing and
the field width as well, verifying the number of assignments made, the
number of characters consumed and the value assigned.
Add the common test code here as well as test cases for scanf, and then
base Makefile infrastructure plus target-agnostic input data, for the
character conversions and the `char', `short', and `long long' integer
ones, signed and unsigned, with remaining input data and other functions
from the scanf family deferred to subsequent additions.
Keep input data disabled and referring to BZ #12701 for entries that are
currently incorrectly accepted as valid data, such as '0b' or '0x' with
the relevant integer conversions or sequences of an insufficient number
of characters with the c conversion.
Reviewed-by: Joseph Myers <josmyers@redhat.com>
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