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Fix off-by-one error in Regex::isValid

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187992 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov 2013-08-08 17:32:45 +00:00
parent 014773626d
commit 783a0387c5
2 changed files with 9 additions and 1 deletions
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2
lib/Support/Regex.cpp
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@ -43,7 +43,7 @@ bool Regex::isValid(std::string &Error) {
size_t len = llvm_regerror(error, preg, NULL, 0);
Error.resize(len);
Error.resize(len - 1);
llvm_regerror(error, preg, &Error[0], len);
return false;
}

8
unittests/Support/RegexTest.cpp
View File

@ -127,4 +127,12 @@ TEST_F(RegexTest, IsLiteralERE) {
EXPECT_FALSE(Regex::isLiteralERE("abc{1,2}"));
}
TEST_F(RegexTest, IsValid) {
std::string Error;
EXPECT_FALSE(Regex("(foo").isValid(Error));
EXPECT_EQ("parentheses not balanced", Error);
EXPECT_FALSE(Regex("a[b-").isValid(Error));
EXPECT_EQ("invalid character range", Error);
}
}