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Fixed GCC-9 build error

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-Werror=format-overflow
This commit is contained in:
Vasily Nemkov 2019-10-08 07:58:10 +03:00
parent f1afc98e0c
commit 6fe59aea14
1 changed files with 3 additions and 1 deletions
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4
dbms/src/IO/WriteHelpers.h
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@ -773,7 +773,9 @@ inline void writeDateTimeText(DateTime64 datetime64, UInt32 scale, WriteBuffer &
buf.write(fractional_time_delimiter); buf.write(fractional_time_delimiter);
char data[MaxScale]; // trenary to fix GCC-9 build error:
// error: '%0*ld' directive writing between 1 and 20 bytes into a region of size 18 [-Werror=format-overflow=]
char data[MaxScale > 20 ? MaxScale : 20];
int written = sprintf(data, "%0*ld", scale, c.fractional); // TODO(nemkov): can it be negative ? if yes, do abs() on it. int written = sprintf(data, "%0*ld", scale, c.fractional); // TODO(nemkov): can it be negative ? if yes, do abs() on it.
writeText(&data[0], static_cast<size_t>(written), buf); writeText(&data[0], static_cast<size_t>(written), buf);
} }