9761385dbdPR-URL: https://github.com/nodejs/node/pull/64040 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: René <contact.9a5d6388@renegade334.me.uk> Reviewed-By: Paolo Insogna <paolo@cowtech.it>
54 lines
1.4 KiB
C
54 lines
1.4 KiB
C
/* Area: ffi_call
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Purpose: Tests if ffi_call reads data beyond end.
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Limitations: needs mmap.
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PR: 887
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Originator: Mikulas Patocka <mikulas@twibright.com> */
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/* { dg-do run } */
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#include "ffitest.h"
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#ifdef __linux__
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#include <sys/mman.h>
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#include <unistd.h>
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static int ABI_ATTR fn(unsigned char a, unsigned short b, unsigned int c, unsigned long d)
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{
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return (int)(a + b + c + d);
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}
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#endif
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int main(void)
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{
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#ifdef __linux__
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ffi_cif cif;
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ffi_type *args[MAX_ARGS];
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void *values[MAX_ARGS];
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ffi_arg rint;
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char *m;
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int ps;
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args[0] = &ffi_type_uchar;
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args[1] = &ffi_type_ushort;
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args[2] = &ffi_type_uint;
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args[3] = &ffi_type_ulong;
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CHECK(ffi_prep_cif(&cif, ABI_NUM, 4, &ffi_type_sint, args) == FFI_OK);
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ps = getpagesize();
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m = mmap(NULL, ps * 3, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
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CHECK(m != MAP_FAILED);
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CHECK(mprotect(m, ps, PROT_NONE) == 0);
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CHECK(mprotect(m + ps * 2, ps, PROT_NONE) == 0);
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values[0] = m + ps * 2 - sizeof(unsigned char);
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values[1] = m + ps * 2 - sizeof(unsigned short);
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values[2] = m + ps * 2 - sizeof(unsigned int);
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values[3] = m + ps * 2 - sizeof(unsigned long);
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ffi_call(&cif, FFI_FN(fn), &rint, values);
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CHECK((int)rint == 0);
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values[0] = m + ps;
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values[1] = m + ps;
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values[2] = m + ps;
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values[3] = m + ps;
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ffi_call(&cif, FFI_FN(fn), &rint, values);
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CHECK((int)rint == 0);
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#endif
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exit(0);
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}
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