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| -rw-r--r-- | test/Sema/exprs.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Sema/exprs.c b/test/Sema/exprs.c index e88f7fc08b..5917e085ea 100644 --- a/test/Sema/exprs.c +++ b/test/Sema/exprs.c @@ -1,5 +1,23 @@ // RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only +// PR 8876 - don't warn about trivially unreachable null derefs. Note that +// we put this here because the reachability analysis only kicks in for +// suppressing false positives when code has no errors. +#define PR8876(err_ptr) do {\ + if (err_ptr) *(int*)(err_ptr) = 1;\ + } while (0) + +#define PR8876_pos(err_ptr) do {\ + if (!err_ptr) *(int*)(err_ptr) = 1;\ + } while (0) + + +int test_pr8876() { + PR8876(0); // no-warning + PR8876_pos(0); // expected-warning{{indirection of non-volatile null pointer will be deleted, not trap}} expected-note{{consider using __builtin_trap() or qualifying pointer with 'volatile'}} + return 0; +} + // PR1966 _Complex double test1() { return __extension__ 1.0if; |