description | title | ms.date | f1_keywords | helpviewer_keywords | ms.assetid | ||||
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Learn more about: Warning C6293 |
Warning C6293 |
11/04/2016 |
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24a475f6-fd93-4778-856a-9dd7941f7520 |
Ill-defined for-loop: counts down from minimum
This warning indicates that a for-loop might not function as intended. It occurs when a loop counts down from a minimum, but has a higher termination condition.
A signed or unsigned index variable, together with a negative increment, will cause the loop to count negative until an overflow occurs, which will terminate the loop.
Code analysis name: LOOP_INDEX_GOES_NEGATIVE
The following sample code generates this warning:
void f( )
{
signed char i;
for (i = 0; i < 100; i--)
{
// code ...
}
}
To correct this warning, use the following code:
void f( )
{
signed char i;
for (i = 0; i < 100; i++)
{
// code ...
}
}