src/tree_edit.h: coverity fix - out-of-bounds access

jsc-se · jsc-se · commit 67bee875572a · 2025-04-17T08:52:22.000+02:00
diff --git a/src/tree_edit.h b/src/tree_edit.h
@@ -148,7 +148,7 @@ void *ly_realloc(void *ptr, size_t size);
         } \
         p__ = (char *)((LY_ARRAY_COUNT_TYPE*)(p__) + 1); \
         memcpy(&(ARRAY), &p__, sizeof p__); \
-        if (ARRAY) { \
+        if ((ARRAY) && (SIZE > 0)) { \
             memset(&(ARRAY)[*((LY_ARRAY_COUNT_TYPE*)(p__) - 1)], 0, (SIZE) * sizeof *(ARRAY)); \
         } \
     }

Original file line number	Diff line number	Diff line change
`@@ -148,7 +148,7 @@ void ly_realloc(void ptr, size_t size);`
`148`	`148`	`} \`
`149`	`149`	`p__ = (char )((LY_ARRAY_COUNT_TYPE)(p__) + 1); \`
`150`	`150`	`memcpy(&(ARRAY), &p__, sizeof p__); \`
`151`		`- if (ARRAY) { \`
	`151`	`+ if ((ARRAY) && (SIZE > 0)) { \`
`152`	`152`	`memset(&(ARRAY)[((LY_ARRAY_COUNT_TYPE)(p__) - 1)], 0, (SIZE) * sizeof *(ARRAY)); \`
`153`	`153`	`} \`
`154`	`154`	`}`