Gorm Panic on AutoMigration - Nineya|java/go/python

GORM Playground Link

https://github.com/go-gorm/playground/pull/1

Description

AutoMigration panic when add new column.

panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0xf6dc70]

goroutine 1 [running]: database/sql.(ColumnType).Length(...) /usr/local/go/src/database/sql/sql.go:2993 gorm.io/gorm/migrator.ColumnType.Length(...) /go/pkg/mod/gorm.io/gorm@v1.23.3/migrator/column_type.go:67 gorm.io/gorm/migrator.Migrator.MigrateColumn(0xc0001ce501, 0xc00049e9f0, 0x173dc20, 0xc000132080, 0x1322160, 0xc0003b6690, 0xc0005f0f00, 0x1740460, 0xc0005a9450, 0xc00049e9f0, ...) /go/pkg/mod/gorm.io/gorm@v1.23.3/migrator/migrator.go:409 +0x12e gorm.io/driver/postgres.Migrator.MigrateColumn(0x1, 0xc00049e9f0, 0x173dc20, 0xc000132080, 0x1322160, 0xc0003b6690, 0xc0005f0f00, 0x1740460, 0xc0005a9450, 0x0, ...) /go/pkg/mod/gorm.io/driver/postgres@v1.3.3/migrator.go:205 +0x174 gorm.io/gorm/migrator.Migrator.AutoMigrate.func1(0xc00050c8c0, 0x1322160, 0xc0003b6690) /go/pkg/mod/gorm.io/gorm@v1.23.3/migrator/migrator.go:120 +0x7a8 gorm.io/gorm/migrator.Migrator.RunWithValue(0xc0005cd901, 0xc0006d2c00, 0x173dc20, 0xc000132080, 0x1322160, 0xc0003b6690, 0xc0008b39e8, 0x0, 0x0) /go/pkg/mod/gorm.io/gorm@v1.23.3/migrator/migrator.go:52 +0xd9 gorm.io/gorm/migrator.Migrator.AutoMigrate(0x1, 0xc0006d2c00, 0x173dc20, 0xc000132080, 0xc0005c8110, 0x1, 0x1, 0x0, 0x0) /go/pkg/mod/gorm.io/gorm@v1.23.3/migrator/migrator.go:101 +0x248 gorm.io/gorm.(DB).AutoMigrate(0xc000325200, 0xc0005c8110, 0x1, 0x1, 0x0, 0x0) /go/pkg/mod/gorm.io/gorm@v1.23.3/migrator.go:28 +0x5d gitlab.com/fin-delivery-back/models/migrations.MigrateAllData() /go/src/gitlab.com/fin-delivery-back/models/migrations/base.go:95 +0x937 main.main() /go/src/gitlab.com/fin-delivery-back/main.go:50 +0x285

Comment From: github-actions[bot]

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Comment From: a631807682

upgrade postgres to v1.3.4

Comment From: github-actions[bot]

Comment From: asherascout

gorm version v1.23.5 gorm.io/driver/mysql version v1.3.3

I set autoMigration on select and I encountered same problem when I rundb.Table(tableName).Where(someFilters).Select(some fields).Find(&rows).

Seems that func (m Migrator) ColumnTypes works wrong.

for _, c := range rawColumnTypes {
  if c.Name() == column.NameValue.String {
      column.SQLColumnType = c
      break
  }
 }

This code tries to match column names between rows and columns. However, when I using select, some columns are missing in rows, so SQLColumnType may be nil

Comment From: github-actions[bot]