==3319==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x619000002d7c at pc 0x560f1ff04bb8 bp 0x7ffea3d43f50 sp 0x7ffea3d43f40 READ of size 4 at 0x619000002d7c thread T0 #0 0x560f1ff04bb7 in symbol_translation src/symtab.c:768 #1 0x560f1ff04bb7 in symbols_token_translations_init src/symtab.c:1099 #2 0x560f1ff04bb7 in symbols_pack src/symtab.c:1150 #3 0x560f1fdf777c in check_and_convert_grammar src/reader.c:822 #4 0x560f1fdf777c in reader src/reader.c:718 #5 0x560f1fba1dea in main src/main.c:108 #6 0x7f2d8543db96 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b96) #7 0x560f1fba5909 in _start (/mnt/hda2/suhwan/add_project/final/FINAL_TEST_ZONE/program/bison/install_dir/bin/bison+0x38909) 0x619000002d7c is located 4 bytes to the left of 1128-byte region [0x619000002d80,0x6190000031e8) allocated by thread T0 here: #0 0x7f2d858ebb40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40) #1 0x560f200d4850 in xmalloc lib/xmalloc.c:53 SUMMARY: AddressSanitizer: heap-buffer-overflow src/symtab.c:768 in symbol_translation Shadow bytes around the buggy address: 0x0c327fff8550: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x0c327fff8560: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x0c327fff8570: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x0c327fff8580: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd 0x0c327fff8590: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd =>0x0c327fff85a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa[fa] 0x0c327fff85b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c327fff85c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c327fff85d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c327fff85e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c327fff85f0: 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 ==3319==ABORTING