Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Replace memcpy() calls with memmove() to avoid undefined behavior when source and destination overlap. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | core-8-branch |
| Files: | files | file ages | folders |
| SHA3-256: | 0b45548847c06d9ed3d2851152fa4862 |
| User & Date: | dgp 2019-04-17 19:23:56 |
Context
|
2019-04-18
| ||
| 08:31 | Style corrections and warning elimination check-in: 6be9e0f989 user: dkf tags: core-8-branch | |
|
2019-04-17
| ||
| 19:23 | Replace memcpy() calls with memmove() to avoid undefined behavior when source and destination overla... check-in: 0b45548847 user: dgp tags: core-8-branch | |
| 17:45 | Do not access allocated memory before initializing it. check-in: da82a19bbf user: dgp tags: core-8-branch | |
Changes
Changes to generic/tclUtf.c.
1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 .... 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 .... 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 .... 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 |
/*
* To keep badly formed Utf strings from getting inflated by the
* conversion (thereby causing a segfault), only copy the upper case
* char to dst if its size is <= the original char.
*/
if ((len < TclUtfCount(upChar)) || ((upChar & 0xF800) == 0xD800)) {
memcpy(dst, src, len);
dst += len;
} else {
dst += Tcl_UniCharToUtf(upChar, dst);
}
src += len;
}
*dst = '\0';
................................................................................
/*
* To keep badly formed Utf strings from getting inflated by the
* conversion (thereby causing a segfault), only copy the lower case
* char to dst if its size is <= the original char.
*/
if ((len < TclUtfCount(lowChar)) || ((lowChar & 0xF800) == 0xD800)) {
memcpy(dst, src, len);
dst += len;
} else {
dst += Tcl_UniCharToUtf(lowChar, dst);
}
src += len;
}
*dst = '\0';
................................................................................
/* Combine surrogates */
titleChar = (((titleChar & 0x3ff) << 10) | (ch & 0x3ff)) + 0x10000;
}
#endif
titleChar = Tcl_UniCharToTitle(titleChar);
if ((len < TclUtfCount(titleChar)) || ((titleChar & 0xF800) == 0xD800)) {
memcpy(dst, src, len);
dst += len;
} else {
dst += Tcl_UniCharToUtf(titleChar, dst);
}
src += len;
}
while (*src) {
................................................................................
#endif
/* Special exception for Georgian Asomtavruli chars, no titlecase. */
if ((unsigned)(lowChar - 0x1C90) >= 0x30) {
lowChar = Tcl_UniCharToLower(lowChar);
}
if ((len < TclUtfCount(lowChar)) || ((lowChar & 0xF800) == 0xD800)) {
memcpy(dst, src, len);
dst += len;
} else {
dst += Tcl_UniCharToUtf(lowChar, dst);
}
src += len;
}
*dst = '\0';
|
| | | | |
1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 .... 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 .... 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 .... 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 |
/*
* To keep badly formed Utf strings from getting inflated by the
* conversion (thereby causing a segfault), only copy the upper case
* char to dst if its size is <= the original char.
*/
if ((len < TclUtfCount(upChar)) || ((upChar & 0xF800) == 0xD800)) {
memmove(dst, src, len);
dst += len;
} else {
dst += Tcl_UniCharToUtf(upChar, dst);
}
src += len;
}
*dst = '\0';
................................................................................
/*
* To keep badly formed Utf strings from getting inflated by the
* conversion (thereby causing a segfault), only copy the lower case
* char to dst if its size is <= the original char.
*/
if ((len < TclUtfCount(lowChar)) || ((lowChar & 0xF800) == 0xD800)) {
memmove(dst, src, len);
dst += len;
} else {
dst += Tcl_UniCharToUtf(lowChar, dst);
}
src += len;
}
*dst = '\0';
................................................................................
/* Combine surrogates */
titleChar = (((titleChar & 0x3ff) << 10) | (ch & 0x3ff)) + 0x10000;
}
#endif
titleChar = Tcl_UniCharToTitle(titleChar);
if ((len < TclUtfCount(titleChar)) || ((titleChar & 0xF800) == 0xD800)) {
memmove(dst, src, len);
dst += len;
} else {
dst += Tcl_UniCharToUtf(titleChar, dst);
}
src += len;
}
while (*src) {
................................................................................
#endif
/* Special exception for Georgian Asomtavruli chars, no titlecase. */
if ((unsigned)(lowChar - 0x1C90) >= 0x30) {
lowChar = Tcl_UniCharToLower(lowChar);
}
if ((len < TclUtfCount(lowChar)) || ((lowChar & 0xF800) == 0xD800)) {
memmove(dst, src, len);
dst += len;
} else {
dst += Tcl_UniCharToUtf(lowChar, dst);
}
src += len;
}
*dst = '\0';
|