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catch other potential overflow

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This commit is contained in:
leitner 2014-03-14 20:35:47 +00:00
parent 4a04c40595
commit 08ba483bfb
2 changed files with 4 additions and 1 deletions
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2
scan/scan_ushort.c
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@ -18,7 +18,7 @@ size_t scan_ushort(const char* src,unsigned short* dest) {
unsigned short int n;
/* division is very slow on most architectures */
n=(unsigned short)(l<<3); if ((n>>3)!=l) break;
if (n+(l<<1) < n) break;
if ((unsigned short)(n+(l<<1)) < n) break;
n=(unsigned short)(n+(l<<1));
if ((unsigned short)(n+c) < n) break;
l=(unsigned short)(n+c);

3
test/marshal.c
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@ -219,6 +219,9 @@ int main() {
assert(scan_uint("4294967296",&ui)==9 && ui==429496729);
assert(scan_ushort("65535",&us)==5 && us==0xffff);
assert(scan_ushort("65536",&us)==4 && us==6553);
assert(scan_ushort("655350",&us)==5 && us==0xffff);
assert(scan_ushort("75535",&us)==4 && us==7553);
assert(scan_xint("0ffffffff",&ui)==9 && ui==0xffffffff);
assert(scan_xint("ffffffff0",&ui)==8 && ui==0xffffffff);