Potential fix for code scanning alert no. 270: Incorrect conversion between integer types #27
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…etween integer types Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
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| if value == float64(int64(value)) { | ||
| if value >= float64(math.MinInt64) && value <= float64(math.MaxInt64) { | ||
| return t.Convert(int64(value)) | ||
| if intVal := int64(value); intVal >= math.MinInt8 && intVal <= math.MaxInt8 { |
Check failure
Code scanning / CodeQL
Incorrect conversion between integer types High
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Copilot Autofix
AI 5 months ago
To fix the issue, we need to ensure that the conversion from uint64 to int64 and subsequently to int8 is safe and does not result in unexpected values. This involves:
- Adding a stricter bounds check for
uint64values before converting them toint64. - Ensuring that the
int64value is within the range ofint8before performing the conversion.
The changes will be made in the Convert method of the systemBoolType struct in sql/system_booltype.go.
Suggested changeset
1
sql/system_booltype.go
| @@ -95,3 +95,7 @@ | ||
| if value <= math.MaxInt64 { | ||
| return t.Convert(int64(value)) | ||
| intVal := int64(value) | ||
| if intVal >= math.MinInt8 && intVal <= math.MaxInt8 { | ||
| return int8(intVal), nil | ||
| } | ||
| return nil, ErrInvalidSystemVariableValue.New(t.varName, v) | ||
| } |
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Potential fix for https://github.com/trimble-oss/go-mysql-server/security/code-scanning/270
To resolve the issue, the conversion process should ensure that values are within the bounds of the target type to prevent overflow or incorrect results. This can be achieved by explicitly checking the bounds before performing the conversion. For unsigned integers (
uint64), an upper bound check againstmath.MaxInt64should be added prior to converting toint64.The fix involves:
uint64values to ensure they do not exceedmath.MaxInt64before converting them toint64.Suggested fixes powered by Copilot Autofix. Review carefully before merging.