kconfig: sym_expand_string_value: allow for string termination when reallocing
When expanding a parameterised string we may run out of space, this triggers a realloc. When computing the new allocation size we do not allow for the terminating '\0'. Allow for this when calculating the new length. Signed-off-by: Andy Whitcroft <apw@canonical.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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scripts/kconfig
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@ -875,7 +875,7 @@ const char *sym_expand_string_value(const char *in)
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symval = sym_get_string_value(sym);
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symval = sym_get_string_value(sym);
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}
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}
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newlen = strlen(res) + strlen(symval) + strlen(src);
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newlen = strlen(res) + strlen(symval) + strlen(src) + 1;
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if (newlen > reslen) {
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if (newlen > reslen) {
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reslen = newlen;
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reslen = newlen;
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res = realloc(res, reslen);
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res = realloc(res, reslen);
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