From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> Date: Thu, 2 Jun 2022 01:04:27 +0000 (-0700) Subject: gh-93418: Fix an assert when an f-string expression is followed by an '=', but no... X-Git-Tag: v3.11.0b4~240 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=376d53771d4c109876fd3d002fb8aa5e2c8dec89;p=thirdparty%2FPython%2Fcpython.git gh-93418: Fix an assert when an f-string expression is followed by an '=', but no closing brace. (gh-93419) (gh-93422) (cherry picked from commit ee70c70aa93d7a41cbe47a0b361b17f9d7ec8acd) Co-authored-by: Eric V. Smith Co-authored-by: Eric V. Smith --- diff --git a/Lib/test/test_fstring.py b/Lib/test/test_fstring.py index 0c3372f03355..93aa229709a0 100644 --- a/Lib/test/test_fstring.py +++ b/Lib/test/test_fstring.py @@ -1073,6 +1073,7 @@ x = ( "f'{'", "f'x{<'", # See bpo-46762. "f'x{>'", + "f'{i='", # See gh-93418. ]) # But these are just normal strings. diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-06-01-17-47-40.gh-issue-93418.24dJuc.rst b/Misc/NEWS.d/next/Core and Builtins/2022-06-01-17-47-40.gh-issue-93418.24dJuc.rst new file mode 100644 index 000000000000..74ad06bfeee7 --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2022-06-01-17-47-40.gh-issue-93418.24dJuc.rst @@ -0,0 +1,2 @@ +Fixed an assert where an f-string has an equal sign '=' following an +expression, but there's no trailing brace. For example, f"{i=". diff --git a/Parser/string_parser.c b/Parser/string_parser.c index 9c12d8ca101d..5e94d477bc04 100644 --- a/Parser/string_parser.c +++ b/Parser/string_parser.c @@ -756,7 +756,9 @@ fstring_find_expr(Parser *p, const char **str, const char *end, int raw, int rec while (Py_ISSPACE(**str)) { *str += 1; } - + if (*str >= end) { + goto unexpected_end_of_string; + } /* Set *expr_text to the text of the expression. */ *expr_text = PyUnicode_FromStringAndSize(expr_start, *str-expr_start); if (!*expr_text) {