Limit nDecPlaces to a sensible value [-20, 20]
Protect against callers using for example rtl_math_StringFormat_F
with rtl_math_DecimalPlaces_Max in worst case..
Change-Id: I9f143df6ae67b22e7732547c0f7a53b498caf2b8
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/104472
Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Jenkins
diff --git a/sal/rtl/math.cxx b/sal/rtl/math.cxx
index b7dc1cbb..fe81f4c 100644
--- a/sal/rtl/math.cxx
+++ b/sal/rtl/math.cxx
@@ -433,6 +433,12 @@ void doubleToString(typename T::String ** pResult,
break;
}
// Too large values for nDecPlaces make no sense; it might also be
// rtl_math_DecimalPlaces_Max was passed with rtl_math_StringFormat_F or
// others, but we don't want to allocate/deallocate 2GB just to fill it
// with trailing '0' characters..
nDecPlaces = std::max<sal_Int32>(std::min<sal_Int32>(nDecPlaces, 20), -20);
sal_Int32 nDigits = nDecPlaces + 1;
if (eFormat == rtl_math_StringFormat_F)
