Hello guys,
I recently submitted a problem which generated the following error:
Diagnostics detected issues [cpp.clang++-diagnose]: =================================================================
==3304==ERROR: AddressSanitizer: global-buffer-overflow on address 0x00282658 at pc 0x00161cd6 bp 0x1085faf4 sp 0x1085faf0
READ of size 1 at 0x00282658 thread T0
#0 0x161cd5 in solve K:\codeforces71\098eeebfbac393649f6c79d4673741ac\compile-36d3577b3eaacceb8ba51a42a87e5d9a\p71.cpp:45
#1 0x162380 in main K:\codeforces71\098eeebfbac393649f6c79d4673741ac\compile-36d3577b3eaacceb8ba51a42a87e5d9a\p71.cpp:59
#2 0x1dbda1 in __scrt_common_main_seh f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:283
#3 0x7633343c in BaseThreadInitThunk+0x11 (C:\Windows\syswow64\kernel32.dll+0x7dd7343c)
#4 0x770f9831 in RtlInitializeExceptionChain+0x62 (C:\Windows\SysWOW64\ntdll.dll+0x7dea9831)
#5 0x770f9804 in RtlInitializeExceptionChain+0x35 (C:\Windows\SysWOW64\ntdll.dll+0x7dea9804)
0x00282658 is located 40 bytes to the left of global variable 'std::num_get<char>::id' defined in 'C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.11.25503\include\xlocnum:1231:60' (0x282680) of size 4
0x00282658 is located 0 bytes to the right of global variable 's' defined in 'p71.cpp:32:12' (0x282640) of size 24
SUMMARY: AddressSanitizer: global-buffer-overflow K:\codeforces71\098eeebfbac393649f6c79d4673741ac\compile-36d3577b3eaacceb8ba51a42a87e5d9a\p71.cpp:45 in solve
Shadow bytes around the buggy address:
0x30050470: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x30050480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x30050490: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x300504a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x300504b0: 00 00 00 00 00 00 00 00 00 00 00 f9 f9 f9 f9 f9
=>0x300504c0: 00 00 00 f9 f9 f9 f9 f9 00 00 00[f9]f9 f9 f9 f9
0x300504d0: 04 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
0x300504e0: 04 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
0x300504f0: 04 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9
0x30050500: 00 f9 f9 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
0x30050510: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
Shadow gap: cc
==3304==ABORTING
I looked up online and found an article saying this arises due to segmentation fault. When I declared all variables globally, the error persisted.
The only difference was that instead of WA I got RTE. Could someone pls help me with this issue?
P.S: The submission ID is #177257400 and the problem statement is this
int can't store so large number. 177296883
I think I have used string to input the number x
no you use int x not string x;
Thank you so much for ur help... dunno why I inputted as integer if it was to be used as string itself