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Tom Lane 1d352325b8 Fix power_var_int() for large integer exponents. ... The code for raising a NUMERIC value to an integer power wasn't very careful about large powers. It got an outright wrong answer for an exponent of INT_MIN, due to failure to consider overflow of the Abs(exp) operation; which is fixable by using an unsigned rather than signed exponent value after that point. Also, even though the number of iterations of the power-computation loop is pretty limited, it's easy for the repeated squarings to result in ridiculously enormous intermediate values, which can take unreasonable amounts of time/memory to process, or even overflow the internal "weight" field and so produce a wrong answer. We can forestall misbehaviors of that sort by bailing out as soon as the weight value exceeds what will fit in int16, since then the final answer must overflow (if exp > 0) or underflow (if exp < 0) the packed numeric format. Per off-list report from Pavel Stehule. Back-patch to all supported branches.		11 years ago
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backend	Fix power_var_int() for large integer exponents.	11 years ago
bin	Fix vacuumdb --analyze-in-stages --all order	11 years ago
common	Small message fixes	12 years ago
include	Add 'ignore_nulls' option to row_to_json	11 years ago
interfaces	Install libpq DLL with $(INSTALL_SHLIB).	12 years ago
makefiles	Add file version information to most installed Windows binaries.	12 years ago
pl	Check number of parameters in RAISE statement at compile time.	11 years ago
port	Add support for optional_argument to our own getopt_long() implementation.	11 years ago
template	Remove Alpha and Tru64 support.	12 years ago
test	Fix power_var_int() for large integer exponents.	11 years ago
timezone	Finish adding file version information to installed Windows binaries.	12 years ago
tools	Add valgrind suppression for padding bytes in twophase records.	11 years ago
tutorial	Adjust blank lines around PG_MODULE_MAGIC defines, for consistency	12 years ago
.gitignore	…
DEVELOPERS	…
Makefile	…
Makefile.global.in	Support older versions of "prove"	11 years ago
Makefile.shlib	Remove Alpha and Tru64 support.	12 years ago
bcc32.mak	…
nls-global.mk	…
win32.mak	…