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fix #1594

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2018-04-26 08:39:35 +02:00
parent f54779fe09
commit cf2258a536
1 changed files with 1 additions and 0 deletions
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src/ast/seq_decl_plugin.cpp
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@ -256,6 +256,7 @@ bool zstring::contains(zstring const& other) const {
int zstring::indexof(zstring const& other, int offset) const { int zstring::indexof(zstring const& other, int offset) const {
SASSERT(offset >= 0); SASSERT(offset >= 0);
if (static_cast<unsigned>(offset) <= length() && other.length() == 0) return offset;
if (static_cast<unsigned>(offset) == length()) return -1; if (static_cast<unsigned>(offset) == length()) return -1;
if (other.length() + offset > length()) return -1; if (other.length() + offset > length()) return -1;
unsigned last = length() - other.length(); unsigned last = length() - other.length();