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Use ptrdiff_t type to more precisely indicate usage and avoid compiler warnings.
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src/key.cpp

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -44,15 +44,15 @@ static int ec_privkey_import_der(const secp256k1_context* ctx, unsigned char *ou
4444
if (end - privkey < 1 || !(*privkey & 0x80u)) {
4545
return 0;
4646
}
47-
size_t lenb = *privkey & ~0x80u; privkey++;
47+
ptrdiff_t lenb = *privkey & ~0x80u; privkey++;
4848
if (lenb < 1 || lenb > 2) {
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return 0;
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}
5151
if (end - privkey < lenb) {
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return 0;
5353
}
5454
/* sequence length */
55-
size_t len = privkey[lenb-1] | (lenb > 1 ? privkey[lenb-2] << 8 : 0u);
55+
ptrdiff_t len = privkey[lenb-1] | (lenb > 1 ? privkey[lenb-2] << 8 : 0u);
5656
privkey += lenb;
5757
if (end - privkey < len) {
5858
return 0;
@@ -66,7 +66,7 @@ static int ec_privkey_import_der(const secp256k1_context* ctx, unsigned char *ou
6666
if (end - privkey < 2 || privkey[0] != 0x04u) {
6767
return 0;
6868
}
69-
size_t oslen = privkey[1];
69+
ptrdiff_t oslen = privkey[1];
7070
privkey += 2;
7171
if (oslen > 32 || end - privkey < oslen) {
7272
return 0;

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