comment_form_validate in core/modules/comment/comment.module
Form validation handler for comment_form().
field_test_entity_form_validate in core/modules/field/tests/field_test/field_test.entity.inc
Validate handler for field_test_entity_form().
file_manage_form_validate in core/modules/file/file.pages.inc
Form validation handler for file_manage_form().
node_form_validate in core/modules/node/node.pages.inc
Form validation handler for node_form().
taxonomy_form_term_validate in core/modules/taxonomy/taxonomy.admin.inc
Validation handler for the term form.
user_profile_form_validate in core/modules/user/user.pages.inc
Form validation handler for user_profile_form().
user_register_validate in core/modules/user/user.module
Validation function for the user registration form.