| 1 | // RUN: %clangxx_msan -O0 %s -o %t && %run %t |
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| 2 | |
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| 3 | // Check that strlen() and similar intercepted functions can be called on shadow |
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| 4 | // memory. |
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| 5 | // The mem_to_shadow's part might need rework |
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| 6 | // XFAIL: target={{.*freebsd.*}} |
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| 7 | |
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| 8 | #include <assert.h> |
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| 9 | #include <stdint.h> |
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| 10 | #include <stdio.h> |
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| 11 | #include <string.h> |
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| 12 | #include <stdlib.h> |
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| 13 | #include "test.h" |
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| 14 | |
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| 15 | const char *mem_to_shadow(const char *p) { |
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| 16 | #if defined(__x86_64__) |
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| 17 | return (char *)((uintptr_t)p ^ 0x500000000000ULL); |
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| 18 | #elif defined(__loongarch_lp64) |
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| 19 | return (char *)((uintptr_t)p ^ 0x500000000000ULL); |
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| 20 | #elif defined (__mips64) |
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| 21 | return (char *)((uintptr_t)p ^ 0x8000000000ULL); |
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| 22 | #elif defined(__powerpc64__) |
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| 23 | #define LINEARIZE_MEM(mem) \ |
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| 24 | (((uintptr_t)(mem) & ~0x200000000000ULL) ^ 0x100000000000ULL) |
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| 25 | return (char *)(LINEARIZE_MEM(p) + 0x080000000000ULL); |
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| 26 | #elif defined(__s390x__) |
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| 27 | return (char *)(((uintptr_t)p & ~0xC00000000000ULL) + 0x080000000000ULL); |
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| 28 | #elif defined(__aarch64__) |
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| 29 | return (char *)((uintptr_t)p ^ 0xB00000000000ULL); |
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| 30 | #endif |
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| 31 | } |
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| 32 | |
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| 33 | int main(void) { |
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| 34 | const char *s = "abcdef" ; |
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| 35 | assert(strlen(s) == 6); |
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| 36 | assert(strlen(mem_to_shadow(s)) == 0); |
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| 37 | |
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| 38 | char *t = new char[42]; |
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| 39 | t[41] = 0; |
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| 40 | assert(strlen(mem_to_shadow(t)) == 41); |
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| 41 | return 0; |
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| 42 | } |
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| 43 | |
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