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Fix our printf implementation to follow spec: if a star parameter

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value for a precision is negative, act as though precision weren't
specified at all, that is the whole .* part of the format spec should
be ignored.  Our previous coding took it as .0 which is certainly
wrong.  Per report from Kris Jurka and local testing.

Possibly this should be back-patched, but it would be good to get
some more testing first; in any case there are no known cases where
there's really a problem on the backend side.
This commit is contained in:
Tom Lane 2008-03-18 01:49:44 +00:00
parent 9706f54d5d
commit 206b1e558a
1 changed files with 7 additions and 1 deletions
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8
src/port/snprintf.c
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@ -27,7 +27,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $PostgreSQL: pgsql/src/port/snprintf.c,v 1.34 2007/03/26 21:44:11 momjian Exp $
* $PostgreSQL: pgsql/src/port/snprintf.c,v 1.35 2008/03/18 01:49:44 tgl Exp $
*/
#include "c.h"
@ -565,7 +565,10 @@ nextch2:
{
precision = starval;
if (precision < 0)
{
precision = 0;
pointflag = 0;
}
}
else
{
@ -590,7 +593,10 @@ nextch2:
{
precision = starval;
if (precision < 0)
{
precision = 0;
pointflag = 0;
}
}
else
{