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| author | Marek Polacek <polacek@redhat.com> | 2020-12-02 14:33:13 -0500 |
|---|---|---|
| committer | Marek Polacek <polacek@redhat.com> | 2020-12-08 17:26:37 -0500 |
| commit | 0221c656bbe5b4ab54e784df3b109c60cb27e5b6 (patch) | |
| tree | 96822a349ac389e06496aea1a0f54ec4eee2e6d9 /contrib/jit-coverage-report.py | |
| parent | 5ea350d1d7edf8afaae9e6723cda535c9eaa7562 (diff) | |
| download | gcc-0221c656bbe5b4ab54e784df3b109c60cb27e5b6.zip gcc-0221c656bbe5b4ab54e784df3b109c60cb27e5b6.tar.gz gcc-0221c656bbe5b4ab54e784df3b109c60cb27e5b6.tar.bz2 | |
c++: ICE with -fsanitize=vptr and constexpr dynamic_cast [PR98103]
-fsanitize=vptr initializes all vtable pointers to null so that it can
catch invalid calls; see cp_ubsan_maybe_initialize_vtbl_ptrs. That
means that evaluating a vtable reference can produce a null pointer
in this mode, so cxx_eval_dynamic_cast_fn should check that and give
and error.
gcc/cp/ChangeLog:
PR c++/98103
* constexpr.c (cxx_eval_dynamic_cast_fn): If the evaluating of vtable
yields a null pointer, give an error and return. Use objtype.
gcc/testsuite/ChangeLog:
PR c++/98103
* g++.dg/ubsan/vptr-18.C: New test.
Diffstat (limited to 'contrib/jit-coverage-report.py')
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