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Fix uninitialized digits when resizing in some cases

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This commit is contained in:
K. Lange 2022-09-28 15:09:16 +09:00
parent 7f134f262c
commit 29b9db0079
1 changed files with 2 additions and 1 deletions
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3
src/obj_long.c
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@ -203,9 +203,10 @@ static int krk_long_resize(KrkLong * num, ssize_t newdigits) {
size_t abs = newdigits < 0 ? -newdigits : newdigits; size_t abs = newdigits < 0 ? -newdigits : newdigits;
size_t eabs = num->width < 0 ? -num->width : num->width; size_t eabs = num->width < 0 ? -num->width : num->width;
if (num->width == 0) { if (num->width == 0) {
num->digits = malloc(sizeof(uint32_t) * newdigits); num->digits = calloc(sizeof(uint32_t), newdigits);
} else if (eabs < abs) { } else if (eabs < abs) {
num->digits = realloc(num->digits, sizeof(uint32_t) * newdigits); num->digits = realloc(num->digits, sizeof(uint32_t) * newdigits);
memset(&num->digits[eabs], 0, sizeof(uint32_t)*(abs-eabs));
} }
num->width = newdigits; num->width = newdigits;