hugolib: Recover and log panics in content init

See #6210

diff --git a/hugolib/page__per_output.go b/hugolib/page__per_output.go
index aa0fcd48835dbbc502dfe2962c05e369f9356977..70bb3b223f5981900a902daa17b23c2861ad3abe 100644 (file)
--- a/hugolib/page__per_output.go
+++ b/hugolib/page__per_output.go
@@ -18,6 +18,7 @@ import (
        "context"
        "fmt"
        "html/template"
+       "runtime/debug"
        "strings"
        "sync"
        "unicode/utf8"
@@ -65,8 +66,15 @@ func newPageContentOutput(p *pageState) func(f output.Format) (*pageContentOutpu
                        f: f,
                }
 
-               initContent := func() error {
-                       var err error
+               initContent := func() (err error) {
+                       defer func() {
+                               // See https://github.com/gohugoio/hugo/issues/6210
+                               if r := recover(); r != nil {
+                                       err = fmt.Errorf("%s", r)
+                                       p.s.Log.ERROR.Println("[BUG] Got panic:\n", string(debug.Stack()))
+                               }
+                       }()
+
                        var hasVariants bool
 
                        cp.contentPlaceholders, hasVariants, err = p.shortcodeState.renderShortcodesForPage(p, f)