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[3.12] gh-123229: Fix valgrind warning by initializing the f-string buffers to 0 in the tokenizer (GH-123263) #123265

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Merged
merged 1 commit into from
Aug 23, 2024
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[3.12] gh-123229: Fix valgrind warning by initializing the f-string buffers to 0 in the tokenizer (GH-123263) #123265

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[3.12] gh-123229: Fix valgrind warning by initializing the f-string b… 
…uffers to 0 in the tokenizer (GH-123263)

(cherry picked from commit adc5190)

Co-authored-by: Pablo Galindo Salgado <[email protected]>
Signed-off-by: Pablo Galindo <[email protected]>
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@pablogsal
pablogsal committed Aug 23, 2024
commit 3b7eeefb94c517b61e40ce5575a35b116caed02c
2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Core and Builtins/2024-08-23-13-08-27.gh-issue-123229.aHm-dw.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Fix valgrind warning by initializing the f-string buffers to 0 in the
tokenizer. Patch by Pablo Galindo
2 changes: 1 addition & 1 deletion Parser/tokenizer.c
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Original file line number Diff line number Diff line change
Expand Up @@ -65,7 +65,7 @@ static const char *type_comment_prefix = "# type: ";

static struct tok_state *tok_new(void) {
struct tok_state *tok =
(struct tok_state *)PyMem_Malloc(sizeof(struct tok_state));
(struct tok_state *)PyMem_Calloc(1, sizeof(struct tok_state));
if (tok == NULL)
return NULL;
tok->buf = tok->cur = tok->inp = NULL;
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13 changes: 13 additions & 0 deletions lel.patch
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@@ -0,0 +1,13 @@
diff --git a/Parser/tokenizer.c b/Parser/tokenizer.c
index 3118fb19846..9e0dee8cc38 100644
--- a/Parser/tokenizer.c
+++ b/Parser/tokenizer.c
@@ -65,7 +65,7 @@ static const char *type_comment_prefix = "# type: ";

static struct tok_state *tok_new(void) {
struct tok_state *tok =
- (struct tok_state *)PyMem_Malloc(sizeof(struct tok_state));
+ (struct tok_state *)PyMem_Calloc(1, sizeof(struct tok_state));
if (tok == NULL)
return NULL;
tok->buf = tok->cur = tok->inp = NULL;
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