diff options
| -rw-r--r-- | Misc/NEWS.d/next/Core and Builtins/2020-06-06-00-23-19.bpo-40880.fjdzSh.rst | 2 | ||||
| -rw-r--r-- | Parser/pegen/pegen.c | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/Misc/NEWS.d/next/Core and Builtins/2020-06-06-00-23-19.bpo-40880.fjdzSh.rst b/Misc/NEWS.d/next/Core and Builtins/2020-06-06-00-23-19.bpo-40880.fjdzSh.rst new file mode 100644 index 0000000..ab42f5c --- /dev/null +++ b/Misc/NEWS.d/next/Core and Builtins/2020-06-06-00-23-19.bpo-40880.fjdzSh.rst @@ -0,0 +1,2 @@ +Fix invalid memory read in the new parser when checking newlines in string +literals. Patch by Pablo Galindo. diff --git a/Parser/pegen/pegen.c b/Parser/pegen/pegen.c index c55ff7e..afe75d7 100644 --- a/Parser/pegen/pegen.c +++ b/Parser/pegen/pegen.c @@ -937,8 +937,8 @@ _PyPegen_number_token(Parser *p) static int // bool newline_in_string(Parser *p, const char *cur) { - for (char c = *cur; cur >= p->tok->buf; c = *--cur) { - if (c == '\'' || c == '"') { + for (const char *c = cur; c >= p->tok->buf; c--) { + if (*c == '\'' || *c == '"') { return 1; } } |