This is gdb user-define function set for debugging STL of llvm stdc++ version.
I found this one(https://github.com/koutheir/libcxx-pretty-printers) but my gdb doesn't support python yet.
So I made it and the usage comes from https://gist.github.com/skyscribe/3978082
It's simple to use as shown below.
It supports std::string, std::vector, std::map, std::multimap, std::unordered_map, std::list, std::stack, std::deque, std::queue.
// Test Code
std::vector<int32_t> intVec;
std::map<std::string, int32_t> siMap;
std::map<int32_t, int32_t> iiMap;
std::multimap<std::string, int32_t> siMMap;
std::multimap<int32_t, int32_t> iiMMap;
std::unordered_map<std::string, int32_t> siHMap;
std::unordered_map<int32_t, int32_t> iiHMap;
std::list<int32_t> intList;
std::stack<int32_t> intStack;
std::deque<int32_t> intDeque;
std::queue<int32_t> intQueue;
for (int i = 10; i > 0; i--) {
intVec.push_back(i);
siMap[std::to_string(i)] = i;
iiMap[i] = i;
siMMap.insert(std::pair<std::string, int32_t>(std::to_string(i), i));
siMMap.insert(std::pair<std::string, int32_t>(std::to_string(10-i), 10-i));
iiMMap.insert(std::pair<int32_t, int32_t>(i, i));
iiMMap.insert(std::pair<int32_t, int32_t>(10-i, 10-i));
siHMap[std::to_string(i)] = i;
iiHMap[i] = i;
intList.push_back(i);
intStack.push(i);
intDeque.push_back(i);
intDeque.push_front(i);
intQueue.push(i);
}
// iterating vector
(gdb) pvector intVec
[0]: $3 = 10
[1]: $4 = 9
[2]: $5 = 8
[3]: $6 = 7
[4]: $7 = 6
[5]: $8 = 5
[6]: $9 = 4
[7]: $10 = 3
[8]: $11 = 2
[9]: $12 = 1
Size = 10
// Printing specific element of vector
(gdb) pvector intVec 3
[3]: $116 = 7
Size = 10
// Printing specific range of vector
(gdb) pVector intVec 0 9
[0]: $117 = 10
[1]: $118 = 9
[2]: $119 = 8
[3]: $120 = 7
[4]: $121 = 6
[5]: $122 = 5
[6]: $123 = 4
[7]: $124 = 3
[8]: $125 = 2
[9]: $126 = 1
Size = 10
// iterating list
(gdb) plist intList
[0]: $239 = 10
[1]: $240 = 9
[2]: $241 = 8
[3]: $242 = 7
[4]: $243 = 6
[5]: $244 = 5
[6]: $245 = 4
[7]: $246 = 3
[8]: $247 = 2
[9]: $248 = 1
Size = 10
// iterating stack
(gdb) pstack intStack
[0]$249 = 10
[1]$250 = 9
[2]$251 = 8
[3]$252 = 7
[4]$253 = 6
[5]$254 = 5
[6]$255 = 4
[7]$256 = 3
[8]$257 = 2
[9]$258 = 1
Size = 10
// iterating deque
(gdb) pdequeue intDeque
[0]$259 = 1
[1]$260 = 2
[2]$261 = 3
[3]$262 = 4
[4]$263 = 5
[5]$264 = 6
[6]$265 = 7
[7]$266 = 8
[8]$267 = 9
[9]$268 = 10
[10]$269 = 10
[11]$270 = 9
[12]$271 = 8
[13]$272 = 7
[14]$273 = 6
[15]$274 = 5
[16]$275 = 4
[17]$276 = 3
[18]$277 = 2
[19]$278 = 1
Size = 20
// iterating queue
(gdb) pqueue intQueue
[0]$279 = 10
[1]$280 = 9
[2]$281 = 8
[3]$282 = 7
[4]$283 = 6
[5]$284 = 5
[6]$285 = 4
[7]$286 = 3
[8]$287 = 2
[9]$288 = 1
Size = 10
// Printing string
// if it is sso(short string optimization) then prints all elements of array.
// and didn't find printing as heap allocated string. :(
(gdb) pstring sso_string
$238 = "test~\000\000\000\000\000"
(gdb) pstring long_string
"10987654321"
(gdb)
// iterating std::map and the key type is std::string (which is sso)
(gdb) psmap siMap
[0] Key ::$217 = "1\000\000\000\000\000\000\000\000\000"
[0] Value ::$218 = 1
[1] Key ::$219 = "10\000\000\000\000\000\000\000\000"
[1] Value ::$220 = 10
[2] Key ::$221 = "2\000\000\000\000\000\000\000\000\000"
[2] Value ::$222 = 2
[3] Key ::$223 = "3\000\000\000\000\000\000\000\000\000"
[3] Value ::$224 = 3
[4] Key ::$225 = "4\000\000\000\000\000\000\000\000\000"
[4] Value ::$226 = 4
[5] Key ::$227 = "5\000\000\000\000\000\000\000\000\000"
[5] Value ::$228 = 5
[6] Key ::$229 = "6\000\000\000\000\000\000\000\000\000"
[6] Value ::$230 = 6
[7] Key ::$231 = "7\000\000\000\000\000\000\000\000\000"
[7] Value ::$232 = 7
[8] Key ::$233 = "8\000\000\000\000\000\000\000\000\000"
[8] Value ::$234 = 8
[9] Key ::$235 = "9\000\000\000\000\000\000\000\000\000"
[9] Value ::$236 = 9
Size = 10
// iterating std::map
(gdb) pmap iiMap
[0] Key :: $177 = 1
[0] Value :: $178 = 1
[1] Key :: $179 = 2
[1] Value :: $180 = 2
[2] Key :: $181 = 3
[2] Value :: $182 = 3
[3] Key :: $183 = 4
[3] Value :: $184 = 4
[4] Key :: $185 = 5
[4] Value :: $186 = 5
[5] Key :: $187 = 6
[5] Value :: $188 = 6
[6] Key :: $189 = 7
[6] Value :: $190 = 7
[7] Key :: $191 = 8
[7] Value :: $192 = 8
[8] Key :: $193 = 9
[8] Value :: $194 = 9
[9] Key :: $195 = 10
[9] Value :: $196 = 10
Size = 10
// iterating std::multimap
(gdb) pmap iiMMap
[0] Key :: $2 = 0
[0] Value :: $3 = 0
[1] Key :: $4 = 1
[1] Value :: $5 = 1
[2] Key :: $6 = 1
[2] Value :: $7 = 1
[3] Key :: $8 = 2
[3] Value :: $9 = 2
[4] Key :: $10 = 2
[4] Value :: $11 = 2
[5] Key :: $12 = 3
[5] Value :: $13 = 3
[6] Key :: $14 = 3
[6] Value :: $15 = 3
[7] Key :: $16 = 4
[7] Value :: $17 = 4
[8] Key :: $18 = 4
[8] Value :: $19 = 4
[9] Key :: $20 = 5
[9] Value :: $21 = 5
[10] Key :: $22 = 5
[10] Value :: $23 = 5
[11] Key :: $24 = 6
[11] Value :: $25 = 6
[12] Key :: $26 = 6
[12] Value :: $27 = 6
[13] Key :: $28 = 7
[13] Value :: $29 = 7
[14] Key :: $30 = 7
[14] Value :: $31 = 7
[15] Key :: $32 = 8
[15] Value :: $33 = 8
[16] Key :: $34 = 8
[16] Value :: $35 = 8
[17] Key :: $36 = 9
[17] Value :: $37 = 9
[18] Key :: $38 = 9
[18] Value :: $39 = 9
[19] Key :: $40 = 10
[19] Value :: $41 = 10
Map size = 20
// iterating std::multimap and the key type is std::string
(gdb) psmap siMMap
[0] Key ::$44 = "0\000\000\000\000\000\000\000\000\000"
[0] Value ::$45 = 0
[1] Key ::$46 = "1\000\000\000\000\000\000\000\000\000"
[1] Value ::$47 = 1
[2] Key ::$48 = "1\000\000\000\000\000\000\000\000\000"
[2] Value ::$49 = 1
[3] Key ::$50 = "10\000\000\000\000\000\000\000\000"
[3] Value ::$51 = 10
[4] Key ::$52 = "2\000\000\000\000\000\000\000\000\000"
[4] Value ::$53 = 2
[5] Key ::$54 = "2\000\000\000\000\000\000\000\000\000"
[5] Value ::$55 = 2
[6] Key ::$56 = "3\000\000\000\000\000\000\000\000\000"
[6] Value ::$57 = 3
[7] Key ::$58 = "3\000\000\000\000\000\000\000\000\000"
[7] Value ::$59 = 3
[8] Key ::$60 = "4\000\000\000\000\000\000\000\000\000"
[8] Value ::$61 = 4
[9] Key ::$62 = "4\000\000\000\000\000\000\000\000\000"
[9] Value ::$63 = 4
[10] Key ::$64 = "5\000\000\000\000\000\000\000\000\000"
[10] Value ::$65 = 5
[11] Key ::$66 = "5\000\000\000\000\000\000\000\000\000"
[11] Value ::$67 = 5
[12] Key ::$68 = "6\000\000\000\000\000\000\000\000\000"
[12] Value ::$69 = 6
[13] Key ::$70 = "6\000\000\000\000\000\000\000\000\000"
[13] Value ::$71 = 6
[14] Key ::$72 = "7\000\000\000\000\000\000\000\000\000"
[14] Value ::$73 = 7
[15] Key ::$74 = "7\000\000\000\000\000\000\000\000\000"
[15] Value ::$75 = 7
[16] Key ::$76 = "8\000\000\000\000\000\000\000\000\000"
[16] Value ::$77 = 8
[17] Key ::$78 = "8\000\000\000\000\000\000\000\000\000"
[17] Value ::$79 = 8
[18] Key ::$80 = "9\000\000\000\000\000\000\000\000\000"
[18] Value ::$81 = 9
[19] Key ::$82 = "9\000\000\000\000\000\000\000\000\000"
[19] Value ::$83 = 9
Map size = 20
// iterating std::unordered_map
(gdb) phmap iiHMap
Key :: $218 = 1
Value :: $219 = 1
Key :: $220 = 2
Value :: $221 = 2
Key :: $222 = 3
Value :: $223 = 3
Key :: $224 = 4
Value :: $225 = 4
Key :: $226 = 5
Value :: $227 = 5
Key :: $228 = 6
Value :: $229 = 6
Key :: $230 = 7
Value :: $231 = 7
Key :: $232 = 8
Value :: $233 = 8
Key :: $234 = 9
Value :: $235 = 9
Key :: $236 = 10
Value :: $237 = 10
Size : 10
// std::unordered_map and the key type is std::string
(gdb) phsmap siHMap
Key :: $238 = "1\000\000\000\000\000\000\000\000\000"
Value :: $239 = 1
Key :: $240 = "2\000\000\000\000\000\000\000\000\000"
Value :: $241 = 2
Key :: $242 = "3\000\000\000\000\000\000\000\000\000"
Value :: $243 = 3
Key :: $244 = "5\000\000\000\000\000\000\000\000\000"
Value :: $245 = 5
Key :: $246 = "9\000\000\000\000\000\000\000\000\000"
Value :: $247 = 9
Key :: $248 = "7\000\000\000\000\000\000\000\000\000"
Value :: $249 = 7
Key :: $250 = "6\000\000\000\000\000\000\000\000\000"
Value :: $251 = 6
Key :: $252 = "4\000\000\000\000\000\000\000\000\000"
Value :: $253 = 4
Key :: $254 = "8\000\000\000\000\000\000\000\000\000"
Value :: $255 = 8
Key :: $256 = "10\000\000\000\000\000\000\000\000"
Value :: $257 = 10
Size : 10