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06c723447b
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
85 lines
3.2 KiB
Plaintext
85 lines
3.2 KiB
Plaintext
FETCH RECORD 1
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name sqlda descriptor: 'id' value 1
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name sqlda descriptor: 't' value 'a'
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name sqlda descriptor: 'd1' value NUMERIC '1.0'
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name sqlda descriptor: 'd2' value 1.000000
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name sqlda descriptor: 'c' value 'a '
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name sqlda descriptor: 'big' value 1111111111111111111
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FETCH RECORD 2
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name sqlda descriptor: 'id' value 2
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name sqlda descriptor: 't' value NULL'
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name sqlda descriptor: 'd1' value NULL'
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name sqlda descriptor: 'd2' value NULL'
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name sqlda descriptor: 'c' value NULL'
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name sqlda descriptor: 'big' value NULL'
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FETCH RECORD 3
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name sqlda descriptor: 'id' value 3
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name sqlda descriptor: 't' value 'c'
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name sqlda descriptor: 'd1' value NUMERIC '0.0'
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name sqlda descriptor: 'd2' value 3.000000
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name sqlda descriptor: 'c' value 'c '
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name sqlda descriptor: 'big' value 3333333333333333333
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FETCH RECORD 4
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name sqlda descriptor: 'id' value 4
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name sqlda descriptor: 't' value 'd'
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name sqlda descriptor: 'd1' value NUMERIC 'NaN'
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name sqlda descriptor: 'd2' value 4.000000
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name sqlda descriptor: 'c' value 'd '
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name sqlda descriptor: 'big' value 4444444444444444444
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FETCH RECORD 5
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name sqlda descriptor: 'id' value 5
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name sqlda descriptor: 't' value 'e'
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name sqlda descriptor: 'd1' value NUMERIC '0.001234'
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name sqlda descriptor: 'd2' value 5.000000
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name sqlda descriptor: 'c' value 'e '
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name sqlda descriptor: 'big' value 5555555555555555555
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FETCH RECORD 1
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name sqlda descriptor: 'id' value 1
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name sqlda descriptor: 't' value 'a'
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name sqlda descriptor: 'd1' value NUMERIC '1.0'
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name sqlda descriptor: 'd2' value 1.000000
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name sqlda descriptor: 'c' value 'a '
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name sqlda descriptor: 'big' value 1111111111111111111
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FETCH RECORD 2
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name sqlda descriptor: 'id' value 2
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name sqlda descriptor: 't' value NULL'
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name sqlda descriptor: 'd1' value NULL'
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name sqlda descriptor: 'd2' value NULL'
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name sqlda descriptor: 'c' value NULL'
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name sqlda descriptor: 'big' value NULL'
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FETCH RECORD 3
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name sqlda descriptor: 'id' value 3
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name sqlda descriptor: 't' value 'c'
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name sqlda descriptor: 'd1' value NUMERIC '0.0'
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name sqlda descriptor: 'd2' value 3.000000
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name sqlda descriptor: 'c' value 'c '
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name sqlda descriptor: 'big' value 3333333333333333333
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FETCH RECORD 4
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name sqlda descriptor: 'id' value 4
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name sqlda descriptor: 't' value 'd'
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name sqlda descriptor: 'd1' value NUMERIC 'NaN'
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name sqlda descriptor: 'd2' value 4.000000
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name sqlda descriptor: 'c' value 'd '
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name sqlda descriptor: 'big' value 4444444444444444444
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FETCH RECORD 5
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name sqlda descriptor: 'id' value 5
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name sqlda descriptor: 't' value 'e'
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name sqlda descriptor: 'd1' value NUMERIC '0.001234'
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name sqlda descriptor: 'd2' value 5.000000
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name sqlda descriptor: 'c' value 'e '
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name sqlda descriptor: 'big' value 5555555555555555555
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EXECUTE RECORD 4
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name sqlda descriptor: 'id' value 4
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name sqlda descriptor: 't' value 'd'
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name sqlda descriptor: 'd1' value NUMERIC 'NaN'
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name sqlda descriptor: 'd2' value 4.000000
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name sqlda descriptor: 'c' value 'd '
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name sqlda descriptor: 'big' value 4444444444444444444
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EXECUTE RECORD 4
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name sqlda descriptor: 'id' value 4
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name sqlda descriptor: 't' value 'd'
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name sqlda descriptor: 'd1' value NUMERIC 'NaN'
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name sqlda descriptor: 'd2' value 4.000000
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name sqlda descriptor: 'c' value 'd '
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name sqlda descriptor: 'big' value 4444444444444444444
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