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Fix compilation by using std::ptrdiff_t instead of ptrdiff_t

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Signed-off-by: lledey <lledey@gmail.com>
This commit is contained in:
lledey 2013-02-23 21:47:10 +01:00
parent a8e92639af
commit bbab6b2fdc
1 changed files with 12 additions and 13 deletions
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25
common.cpp
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@ -2176,16 +2176,16 @@ template <typename CharType_t>
static CharType_t **make_null_terminated_array_helper(const std::vector<std::basic_string<CharType_t> > &argv)
{
size_t count = argv.size();
/* We allocate everything in one giant block. First compute how much space we need. */
/* N + 1 pointers */
size_t pointers_allocation_len = (count + 1) * sizeof(CharType_t *);
/* In the very unlikely event that CharType_t has stricter alignment requirements than does a pointer, round us up to the size of a CharType_t */
pointers_allocation_len += sizeof(CharType_t) - 1;
pointers_allocation_len -= pointers_allocation_len % sizeof(CharType_t);
/* N null terminated strings */
size_t strings_allocation_len = 0;
for (size_t i=0; i < count; i++)
@ -2193,22 +2193,22 @@ static CharType_t **make_null_terminated_array_helper(const std::vector<std::bas
/* The size of the string, plus a null terminator */
strings_allocation_len += (argv.at(i).size() + 1) * sizeof(CharType_t);
}
/* Now allocate their sum */
unsigned char *base = static_cast<unsigned char *>(malloc(pointers_allocation_len + strings_allocation_len));
if (! base) return NULL;
/* Divvy it up into the pointers and strings */
CharType_t **pointers = reinterpret_cast<CharType_t **>(base);
CharType_t *strings = reinterpret_cast<CharType_t *>(base + pointers_allocation_len);
/* Start copying */
for (size_t i=0; i < count; i++)
{
const std::basic_string<CharType_t> &str = argv.at(i);
// store the current string pointer into self
*pointers++ = strings;
// copy the string into strings
strings = std::copy(str.begin(), str.end(), strings);
// each string needs a null terminator
@ -2216,12 +2216,12 @@ static CharType_t **make_null_terminated_array_helper(const std::vector<std::bas
}
// array of pointers needs a null terminator
*pointers++ = NULL;
// Make sure we know what we're doing
assert((unsigned char *)pointers - base == (ptrdiff_t)pointers_allocation_len);
assert((unsigned char *)strings - (unsigned char *)pointers == (ptrdiff_t)strings_allocation_len);
assert((unsigned char *)strings - base == (ptrdiff_t)(pointers_allocation_len + strings_allocation_len));
assert((unsigned char *)pointers - base == (std::ptrdiff_t)pointers_allocation_len);
assert((unsigned char *)strings - (unsigned char *)pointers == (std::ptrdiff_t)strings_allocation_len);
assert((unsigned char *)strings - base == (std::ptrdiff_t)(pointers_allocation_len + strings_allocation_len));
// Return what we did
return reinterpret_cast<CharType_t**>(base);
}
@ -2235,4 +2235,3 @@ char **make_null_terminated_array(const std::vector<std::string> &lst)
{
return make_null_terminated_array_helper(lst);
}