Drop codepoints that are outside the Unicode range - DO NOT MERGE
Bug: 62134807
Test: mmma cts/tests/tests/graphics &&
adb install -r $OUT/data/app/CtsGraphicsTestCases/CtsGraphicsTestCases.apk &&
adb shell am instrument -w -e class \
android.graphics.cts.TypefaceTest \
android.graphics.cts/android.support.test.runner.AndroidJUnitRunner
Change-Id: Ic780357bde28e233a15709b5fe07cdb3c532f471
(cherry picked from commit 0e441db0f7d36480fcabbacb9f443223063956a0)
diff --git a/libs/minikin/CmapCoverage.cpp b/libs/minikin/CmapCoverage.cpp
index c02526c..da1cf3e 100644
--- a/libs/minikin/CmapCoverage.cpp
+++ b/libs/minikin/CmapCoverage.cpp
@@ -25,6 +25,8 @@
#include <minikin/SparseBitSet.h>
#include <minikin/CmapCoverage.h>
+#include "MinikinInternal.h"
+
namespace android {
// These could perhaps be optimized to use __builtin_bswap16 and friends.
@@ -142,6 +144,19 @@
android_errorWriteLog(0x534e4554, "26413177");
return false;
}
+
+ // No need to read outside of Unicode code point range.
+ if (start > MAX_UNICODE_CODE_POINT) {
+ return true;
+ }
+ if (end > MAX_UNICODE_CODE_POINT) {
+ // file is inclusive, vector is exclusive
+ addRange(coverage, start, MAX_UNICODE_CODE_POINT + 1);
+ if (end == 0xFFFFFFFF) {
+ android_errorWriteLog(0x534e4554, "62134807");
+ }
+ return true;
+ }
if (!addRange(coverage, start, end + 1)) { // file is inclusive, vector is exclusive
return false;
}
diff --git a/libs/minikin/MinikinInternal.h b/libs/minikin/MinikinInternal.h
index 88cc947..c6c5b29 100644
--- a/libs/minikin/MinikinInternal.h
+++ b/libs/minikin/MinikinInternal.h
@@ -47,6 +47,8 @@
hb_blob_t* getFontTable(MinikinFont* minikinFont, uint32_t tag);
+constexpr uint32_t MAX_UNICODE_CODE_POINT = 0x10FFFF;
+
// An RAII wrapper for hb_blob_t
class HbBlob {
public:
