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Diffstat (limited to 'gcc/testsuite/g++.dg/cpp0x/pr65398.C')
-rw-r--r-- | gcc/testsuite/g++.dg/cpp0x/pr65398.C | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp0x/pr65398.C b/gcc/testsuite/g++.dg/cpp0x/pr65398.C new file mode 100644 index 00000000000..a4aeba580fc --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp0x/pr65398.C @@ -0,0 +1,70 @@ +// PR c++/65398 +// { dg-do compile { target c++11 } } + +#define SA(X) static_assert((X),#X) + +constexpr char s[] = "abc"; +constexpr char c1 = *(&s[0] + 0); +constexpr char c2 = *(&s[0] + 1); +constexpr char c3 = *(&s[1] + 0); +constexpr char c4 = *(&s[1] + 1); +constexpr char c5 = *(&s[2] + 0); +constexpr char c6 = *(&s[0] + 2); +constexpr char c7 = *(&s[2] + 1); + +constexpr char d1 = *(&s[4] - 0); // { dg-error "array subscript out of bound" } +constexpr char d2 = *(&s[4] - 1); +constexpr char d3 = *(&s[4] - 2); +constexpr char d4 = *(&s[4] - 3); +constexpr char d5 = *(&s[4] - 4); +constexpr char d6 = *(&s[4] - 5); // { dg-error "negative array subscript" } + +/* Don't accept invalid stuff. */ +constexpr char e1 = *(&s[5] - 1); // { dg-error "is not a constant expression" } +constexpr char e2 = *(&s[5] - 2); // { dg-error "is not a constant expression" } +constexpr char e3 = *(&s[5] - 3); // { dg-error "is not a constant expression" } + +SA (c1 == 'a'); +SA (c2 == 'b'); +SA (c3 == 'b'); +SA (c4 == 'c'); +SA (c5 == 'c'); +SA (c6 == 'c'); +SA (c7 == '\0'); +SA (d2 == '\0'); +SA (d3 == 'c'); +SA (d4 == 'b'); +SA (d5 == 'a'); + +constexpr int l[] = { 'c', 'd', 'e', '\0' }; +constexpr int i1 = *(&l[0] + 0); +constexpr int i2 = *(&l[0] + 1); +constexpr int i3 = *(&l[1] + 0); +constexpr int i4 = *(&l[1] + 1); +constexpr int i5 = *(&l[2] + 0); +constexpr int i6 = *(&l[0] + 2); +constexpr int i7 = *(&l[2] + 1); + +constexpr char j1 = *(&l[4] - 0); // { dg-error "array subscript out of bound" } +constexpr char j2 = *(&l[4] - 1); +constexpr char j3 = *(&l[4] - 2); +constexpr char j4 = *(&l[4] - 3); +constexpr char j5 = *(&l[4] - 4); +constexpr char j6 = *(&l[4] - 5); // { dg-error "negative array subscript" } + +/* Don't accept invalid stuff. */ +constexpr char k1 = *(&l[5] - 1); // { dg-error "is not a constant expression" } +constexpr char k2 = *(&l[5] - 2); // { dg-error "is not a constant expression" } +constexpr char k3 = *(&l[5] - 3); // { dg-error "is not a constant expression" } + +SA (i1 == 'c'); +SA (i2 == 'd'); +SA (i3 == 'd'); +SA (i4 == 'e'); +SA (i5 == 'e'); +SA (i6 == 'e'); +SA (i7 == '\0'); +SA (j2 == '\0'); +SA (j3 == 'e'); +SA (j4 == 'd'); +SA (j5 == 'c'); |