From: Pablo Galindo Salgado <Pablogsal@gmail.com>
Date: Fri, 23 Aug 2024 12:33:45 +0000 (+0100)
Subject: gh-123229: Fix valgrind warning by initializing the f-string buffers to 0 in the... 
X-Git-Tag: v3.14.0a1~712
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=adc5190014efcf7b7a4c5dfc9998faa8345527ed;p=thirdparty%2FPython%2Fcpython.git

gh-123229: Fix valgrind warning by initializing the f-string buffers to 0 in the tokenizer (#123263)

Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
---

diff --git a/Misc/NEWS.d/next/Core and Builtins/2024-08-23-13-08-27.gh-issue-123229.aHm-dw.rst b/Misc/NEWS.d/next/Core and Builtins/2024-08-23-13-08-27.gh-issue-123229.aHm-dw.rst
new file mode 100644
index 000000000000..aa9e8d1fa93b
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2024-08-23-13-08-27.gh-issue-123229.aHm-dw.rst	
@@ -0,0 +1,2 @@
+Fix valgrind warning by initializing the f-string buffers to 0 in the
+tokenizer. Patch by Pablo Galindo
diff --git a/Parser/lexer/state.c b/Parser/lexer/state.c
index 647f29191156..1665debea30b 100644
--- a/Parser/lexer/state.c
+++ b/Parser/lexer/state.c
@@ -12,7 +12,8 @@
 struct tok_state *
 _PyTokenizer_tok_new(void)
 {
-    struct tok_state *tok = (struct tok_state *)PyMem_Malloc(
+    struct tok_state *tok = (struct tok_state *)PyMem_Calloc(
+                                            1,
                                             sizeof(struct tok_state));
     if (tok == NULL)
         return NULL;