digitalmars.D.bugs - [Issue 22849] New: Global buffer overflow on lexer, dereferencing 4
- d-bugmail puremagic.com (53/53) Mar 05 2022 https://issues.dlang.org/show_bug.cgi?id=22849
https://issues.dlang.org/show_bug.cgi?id=22849 Issue ID: 22849 Summary: Global buffer overflow on lexer, dereferencing 4 bytes at the same time Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: major Priority: P1 Component: dmd Assignee: nobody puremagic.com Reporter: contact lsferreira.net A global buffer overflow happens on lexer.d:265 after dereferencing more memory than available, according to AddressSanitizer. --- SUMMARY: AddressSanitizer: global-buffer-overflow /home/luis/Workspace/Programming/Repos/collab/github/dlang/dmd/src/dmd/lexer.d:265:17 in _D3dmd5lexer5Lexer4scanMFNbPSQBb6tokens5TokenZv Shadow bytes around the buggy address: 0x0aadcb2a0e60: 00 00 00 02 f9 f9 f9 f9 00 00 00 00 00 00 00 01 0x0aadcb2a0e70: f9 f9 f9 f9 00 00 00 02 f9 f9 f9 f9 00 05 f9 f9 0x0aadcb2a0e80: 02 f9 f9 f9 00 00 00 01 f9 f9 f9 f9 00 00 00 00 0x0aadcb2a0e90: 00 00 00 00 03 f9 f9 f9 f9 f9 f9 f9 00 00 02 f9 0x0aadcb2a0ea0: f9 f9 f9 f9 00 00 00 00 00 00 00 04 f9 f9 f9 f9 =>0x0aadcb2a0eb0: 00 00 00[01]f9 f9 f9 f9 00 00 00 00 00 00 00 00 0x0aadcb2a0ec0: 00 00 00 00 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 0x0aadcb2a0ed0: 00 00 00 00 00 00 00 00 00 00 00 02 f9 f9 f9 f9 0x0aadcb2a0ee0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 07 f9 0x0aadcb2a0ef0: f9 f9 f9 f9 00 00 00 00 00 00 00 00 00 00 00 00 0x0aadcb2a0f00: 00 03 f9 f9 f9 f9 f9 f9 00 00 00 00 01 f9 f9 f9 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 ==220221==ABORTING --
Mar 05 2022