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In commit ecfd55795, I removed sqlda.c's checks for ndigits != 0 on the
grounds that we should duplicate the state of the numeric value's digit
buffer even when all the digits are zeroes. However, that still isn't
quite right, because another possible state of the digit buffer is
buf == digits == NULL (this occurs for a NaN). As the code now stands,
it'll invoke memcpy with a NULL source address and zero bytecount,
which we know a few platforms crash on. Hence, reinstate the no-copy
short-circuit, but make it test specifically for buf != NULL rather than
some other condition. In hindsight, the ndigits test (added by commit
f2ae9f9c3) was almost certainly meant to fix the NaN case not the
all-zeroes case as the associated thread alleged.
As before, back-patch to all supported versions.
Discussion: https://postgr.es/m/1803D792815FC24D871C00D17AE95905C71161@g01jpexmbkw24
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Numeric values with leading zeroes were incorrectly copied into a
SQLDA (SQL Descriptor Area), leading to wrong results in ECPG programs.
Report and patch by Daisuke Higuchi. Back-patch to all supported
versions.
Discussion: https://postgr.es/m/1803D792815FC24D871C00D17AE95905C71161@g01jpexmbkw24
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The latter was already the dominant use, and it's preferable because
in C the convention is that intXX means XX bits. Therefore, allowing
mixed use of int2, int4, int8, int16, int32 is obviously confusing.
Remove the typedefs for int2 and int4 for now. They don't seem to be
widely used outside of the PostgreSQL source tree, and the few uses
can probably be cleaned up by the time this ships.
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code.
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ecpg's sqlda.
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we know what should be stored in there.
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superfluous include files.
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ecpg in both native and compatiblity mode.
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