Ramin Farajpour Cami e6110efd03 gh-144759: Fix undefined behavior from NULL pointer arithmetic in lexer (#144788) ... Guard against NULL pointer arithmetic in `_PyLexer_remember_fstring_buffers` and `_PyLexer_restore_fstring_buffers`. When `start` or `multi_line_start` are NULL (uninitialized in tok_mode_stack[0]), performing `NULL - tok->buf` is undefined behavior. Add explicit NULL checks to store -1 as sentinel and restore NULL accordingly. Add test_lexer_buffer_realloc_with_null_start to test_repl.py that exercises the code path where the lexer buffer is reallocated while tok_mode_stack[0] has NULL start/multi_line_start pointers. This triggers _PyLexer_remember_fstring_buffers and verifies the NULL checks prevent undefined behavior.		2026-02-15 14:39:57 +00:00
..
buffer.c	gh-144759: Fix undefined behavior from NULL pointer arithmetic in lexer (#144788)	2026-02-15 14:39:57 +00:00
buffer.h
lexer.c	gh-140576: Fixed crash produced by lexer in case of dedented zero byte (#140583)	2025-10-29 13:27:35 +00:00
lexer.h	gh-132661: Implement PEP 750 (#132662)	2025-04-30 11:46:41 +02:00
state.c	gh-135801: Add the module parameter to compile() etc (GH-139652)	2025-11-13 13:21:32 +02:00
state.h	gh-135801: Add the module parameter to compile() etc (GH-139652)	2025-11-13 13:21:32 +02:00