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-rw-r--r--external/icu/icu4c-scriptrun.patch.160
1 files changed, 60 insertions, 0 deletions
diff --git a/external/icu/icu4c-scriptrun.patch.1 b/external/icu/icu4c-scriptrun.patch.1
new file mode 100644
index 000000000..f2f2cf9f3
--- /dev/null
+++ b/external/icu/icu4c-scriptrun.patch.1
@@ -0,0 +1,60 @@
+diff -ur icu.org/source/extra/scrptrun/scrptrun.cpp icu/source/extra/scrptrun/scrptrun.cpp
+--- icu.org/source/extra/scrptrun/scrptrun.cpp 2017-01-20 01:20:31.000000000 +0100
++++ icu/source/extra/scrptrun/scrptrun.cpp 2017-04-21 22:59:31.708037770 +0200
+@@ -151,7 +151,11 @@
+ // characters above it on the stack will be poped.
+ if (pairIndex >= 0) {
+ if ((pairIndex & 1) == 0) {
+- parenStack[++parenSP].pairIndex = pairIndex;
++ ++parenSP;
++ int32_t nVecSize = parenStack.size();
++ if (parenSP == nVecSize)
++ parenStack.resize(nVecSize + 128);
++ parenStack[parenSP].pairIndex = pairIndex;
+ parenStack[parenSP].scriptCode = scriptCode;
+ } else if (parenSP >= 0) {
+ int32_t pi = pairIndex & ~1;
+@@ -185,7 +189,14 @@
+ // pop it from the stack
+ if (pairIndex >= 0 && (pairIndex & 1) != 0 && parenSP >= 0) {
+ parenSP -= 1;
+- startSP -= 1;
++ /* decrement startSP only if it is >= 0,
++ decrementing it unnecessarily will lead to memory corruption
++ while processing the above while block.
++ e.g. startSP = -4 , parenSP = -1
++ */
++ if (startSP >= 0) {
++ startSP -= 1;
++ }
+ }
+ } else {
+ // if the run broke on a surrogate pair,
+diff -ur icu.org/source/extra/scrptrun/scrptrun.h icu/source/extra/scrptrun/scrptrun.h
+--- icu.org/source/extra/scrptrun/scrptrun.h 2017-01-20 01:20:31.000000000 +0100
++++ icu/source/extra/scrptrun/scrptrun.h 2017-04-21 22:59:31.708037770 +0200
+@@ -19,6 +19,7 @@
+ #include "unicode/utypes.h"
+ #include "unicode/uobject.h"
+ #include "unicode/uscript.h"
++#include <vector>
+
+ U_NAMESPACE_BEGIN
+
+@@ -81,7 +82,7 @@
+ int32_t scriptEnd;
+ UScriptCode scriptCode;
+
+- ParenStackEntry parenStack[128];
++ std::vector<ParenStackEntry> parenStack;
+ int32_t parenSP;
+
+ static int8_t highBit(int32_t value);
+@@ -135,6 +136,7 @@
+ scriptEnd = charStart;
+ scriptCode = USCRIPT_INVALID_CODE;
+ parenSP = -1;
++ parenStack.resize(128);
+ }
+
+ inline void ScriptRun::reset(int32_t start, int32_t length)