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DB::IO: tiny fix [#CONV-2807].

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This commit is contained in:
Alexey Milovidov 2012-04-13 19:50:42 +00:00
parent 26096423fe
commit 5a36e4bce3
1 changed files with 3 additions and 4 deletions
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7
dbms/include/DB/IO/WriteHelpers.h
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@ -118,11 +118,10 @@ void writeIntText(T x, WriteBuffer & buf)
template <typename T>
void writeFloatText(T x, WriteBuffer & buf, unsigned precision = WRITE_HELPERS_DEFAULT_FLOAT_PRECISION)
{
unsigned size = precision + 10;
char tmp[size]; /// знаки, +0.0e+123\0
int res = std::snprintf(tmp, size, "%.*g", precision, x);
char tmp[24];
int res = std::snprintf(tmp, 24, "%.*g", precision, x);
if (res >= static_cast<int>(size) || res <= 0)
if (res >= 24 || res <= 0)
throw Exception("Cannot print float or double number", ErrorCodes::CANNOT_PRINT_FLOAT_OR_DOUBLE_NUMBER);
buf.write(tmp, res);