As per documentation, even 4.7 ought to suffice. At least 4.13 objects
to there being a blank between @anchor and the opening curly brace.
---
Noticed with gcc15, so may want backporting.
--- a/gcc/doc/gcov.texi
+++ b/gcc/doc/gcov.texi
@@ -1077,7 +1077,7 @@ condition 1 not covered (true)
-: 12:@}
@end smallexample
-@anchor {gcov prime paths example}
+@anchor{gcov prime paths example}
When you compile with @option{--coverage -fpath-coverage} and use the
option @option{-e} your output looks like this:
