symfony/symfony — pull request #12692 by udsholt (2014-11-29 11:51:47+00:00)
Title: [Form] Improve exception message in config builder when data class is invalid

[Form] Improve exception message in config builder when data class is invalid

| Q | A
| ------------- | ---
| Bug fix? | yes
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | #12359
| License | MIT
| Doc PR |