https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94190
Bug ID: 94190 Summary: [10 Regression] error: no post-decrement operator for type since r10-7096-gd417b4f5414d9076 Product: gcc Version: 10.0 Status: UNCONFIRMED Keywords: rejects-valid Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org Target Milestone: --- Reduced from boost:extra: $ cat boost.ii class { typedef long a; operator a &(); } b; template <class> void c() { b--; } $ g++ boost.ii -c boost.ii: In function ‘void c()’: boost.ii:5:30: error: no post-decrement operator for type 5 | template <class> void c() { b--; } | $ g++-9 boost.ii -c