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Limit precision to 100 to stop silly formats from running out of memory,

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reported by z1281552865 at gmail dot com.
This commit is contained in:
nicm
2026-04-14 07:24:23 +00:00
parent cc57913d7a
commit a11363e9e7
1 changed files with 5 additions and 1 deletions
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6
format.c
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@@ -90,6 +90,9 @@ format_job_cmp(struct format_job *fj1, struct format_job *fj2)
/* Maimum repeat size. */
#define FORMAT_MAX_REPEAT 10000
/* Maimum precision. */
#define FORMAT_MAX_PRECISION 100
/* Format modifiers. */
#define FORMAT_TIMESTRING 0x1
#define FORMAT_BASENAME 0x2
@@ -4850,7 +4853,8 @@ format_replace_expression(struct format_modifier *mexp,
/* The third argument may be precision. */
if (argc >= 3) {
prec = strtonum(mexp->argv[2], INT_MIN + 1, INT_MAX, &errstr);
prec = strtonum(mexp->argv[2], -FORMAT_MAX_PRECISION,
FORMAT_MAX_PRECISION, &errstr);
if (errstr != NULL) {
format_log(es, "expression precision %s: %s", errstr,
mexp->argv[2]);