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DataExtractor: Fix integer truncation issues in LEB128 extraction.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162201 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
2012-08-20 10:52:11 +00:00
parent bee05dc840
commit 46aed73955
2 changed files with 12 additions and 3 deletions
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9
unittests/Support/DataExtractorTest.cpp
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@@ -16,6 +16,7 @@ namespace {
const char numberData[] = "\x80\x90\xFF\xFF\x80\x00\x00\x00";
const char stringData[] = "hellohello\0hello";
const char leb128data[] = "\xA6\x49";
const char bigleb128data[] = "\xAA\xA9\xFF\xAA\xFF\xAA\xFF\x4A";
TEST(DataExtractorTest, OffsetOverflow) {
DataExtractor DE(StringRef(numberData, sizeof(numberData)-1), false, 8);
@@ -106,6 +107,14 @@ TEST(DataExtractorTest, LEB128) {
offset = 0;
EXPECT_EQ(-7002LL, DE.getSLEB128(&offset));
EXPECT_EQ(2U, offset);
DataExtractor BDE(StringRef(bigleb128data, sizeof(bigleb128data)-1), false,8);
offset = 0;
EXPECT_EQ(42218325750568106ULL, BDE.getULEB128(&offset));
EXPECT_EQ(8U, offset);
offset = 0;
EXPECT_EQ(-29839268287359830LL, BDE.getSLEB128(&offset));
EXPECT_EQ(8U, offset);
}
}