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-rw-r--r--src/amount.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/amount.cc b/src/amount.cc
index 85ba07f5..274d3001 100644
--- a/src/amount.cc
+++ b/src/amount.cc
@@ -283,7 +283,7 @@ namespace {
}
if (sign) {
- char * newbuf = new char[std::strlen(result ? result : buf) + 1];
+ char * newbuf = new char[std::strlen(result ? result : buf) + 2];
newbuf[0] = '-';
std::strcpy(&newbuf[1], result ? result : buf);
mpz_set_str(dest, newbuf, 10);