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Tom Lane 0927bf8060 Guard against bad "dscale" values in numeric_recv(). ... We were not checking to see if the supplied dscale was valid for the given digit array when receiving binary-format numeric values. While dscale can validly be more than the number of nonzero fractional digits, it shouldn't be less; that case causes fractional digits to be hidden on display even though they're there and participate in arithmetic. Bug #12053 from Tommaso Sala indicates that there's at least one broken client library out there that sometimes supplies an incorrect dscale value, leading to strange behavior. This suggests that simply throwing an error might not be the best response; it would lead to failures in applications that might seem to be working fine today. What seems the least risky fix is to truncate away any digits that would be hidden by dscale. This preserves the existing behavior in terms of what will be printed for the transmitted value, while preventing subsequent arithmetic from producing results inconsistent with that. In passing, throw a specific error for the case of dscale being outside the range that will fit into a numeric's header. Before you got "value overflows numeric format", which is a bit misleading. Back-patch to all supported branches.		11 years ago
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adt	Guard against bad "dscale" values in numeric_recv().	11 years ago
cache	Improve typcache: cache negative lookup results, add invalidation logic.	11 years ago
error	Support frontend-backend protocol communication using a shm_mq.	11 years ago
fmgr	pgindent run for 9.4	12 years ago
hash	pgindent run for 9.4	12 years ago
init	Move the backup-block logic from XLogInsert to a new file, xloginsert.c.	11 years ago
mb	Add file version information to most installed Windows binaries.	12 years ago
misc	Attempt to suppress uninitialized variable warning.	11 years ago
mmgr	Fix and enhance the assertion of no palloc's in a critical section.	12 years ago
resowner	pgindent run for 9.4	12 years ago
sort	Remove incorrect comment.	11 years ago
time	Move the backup-block logic from XLogInsert to a new file, xloginsert.c.	11 years ago
.gitignore	…
Gen_dummy_probes.sed	Update copyright for 2014	12 years ago
Gen_fmgrtab.pl	Update copyright for 2014	12 years ago
Makefile	…
errcodes.txt	Update copyright for 2014	12 years ago
generate-errcodes.pl	Update copyright for 2014	12 years ago
probes.d	Fix build with LWLOCK_STATS or dtrace.	12 years ago