File: constexpr-strstr.C

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gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
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// { dg-do compile { target c++11 } }

constexpr const char *f1 (const char *p, const char *q) { return __builtin_strstr (p, q); }
constexpr const char a[] = "abcdefedcbaaaaab";
constexpr const char b[] = "fed";
constexpr const char c[] = "aaab";
static_assert (f1 ("abcde", "ee") == nullptr, "");
static_assert (f1 (a, b) == a + 5, "");
static_assert (f1 (a, c) == a + 12, "");
static_assert (f1 (a, "") == a, "");
static_assert (f1 (a, "aaaaaab") == nullptr, "");
static_assert (f1 (a, "aaa") == a + 10, "");