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Shrink STRING_BYTES_MAX slightly

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* src/alloc.c (STRING_BYTES_MAX): Also don’t allow sizes to exceed
PTRDIFF_MAX in internal calculations when calling malloc, as those
are problematic even if the final number of bytes does not exceed
PTRDIFF_MAX.
This commit is contained in:
Paul Eggert 2026-05-20 08:32:41 -07:00
parent 59b2f8f1dc
commit 9851c5ea34
1 changed files with 1 additions and 1 deletions
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src/alloc.c
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@ -1501,7 +1501,7 @@ sdata_size (ptrdiff_t n)
calculating a value to be passed to malloc. */
static ptrdiff_t const STRING_BYTES_MAX =
min (STRING_BYTES_BOUND,
((SIZE_MAX
((min (PTRDIFF_MAX, SIZE_MAX)
- GC_STRING_EXTRA
- offsetof (struct sblock, data)
- SDATA_DATA_OFFSET)