Fix Bug 30240 - std::string: append(first, last) error when aliasing. Add test cases for append/insert/assign/replace while we're at it, and fix a similar bug in insert.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@280643 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/strings/basic.string/string.modifiers/string_append/iterator.pass.cpp

@@ -178,4 +178,21 @@ int main()
     test_exceptions(S(), TIter(s, s+10, 6, TIter::TAComparison), TIter());
 	}
 #endif
+
+	{ // test appending to self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.append(s_short.begin(), s_short.end());
+	assert(s_short == "123/123/");
+	s_short.append(s_short.begin(), s_short.end());
+	assert(s_short == "123/123/123/123/");
+	s_short.append(s_short.begin(), s_short.end());
+	assert(s_short == "123/123/123/123/123/123/123/123/");
+	
+	s_long.append(s_long.begin(), s_long.end());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+	}
+
 }

test/std/strings/basic.string/string.modifiers/string_append/pointer.pass.cpp

@@ -61,4 +61,20 @@ int main()
          S("1234567890123456789012345678901234567890"));
     }
 #endif
+
+	{ // test appending to self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.append(s_short.c_str());
+	assert(s_short == "123/123/");
+	s_short.append(s_short.c_str());
+	assert(s_short == "123/123/123/123/");
+	s_short.append(s_short.c_str());
+	assert(s_short == "123/123/123/123/123/123/123/123/");
+	
+	s_long.append(s_long.c_str());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+	}
 }

test/std/strings/basic.string/string.modifiers/string_append/pointer_size.pass.cpp

@@ -70,4 +70,20 @@ int main()
          S("1234567890123456789012345678901234567890"));
     }
 #endif
+
+	{ // test appending to self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.append(s_short.data(), s_short.size());
+	assert(s_short == "123/123/");
+	s_short.append(s_short.data(), s_short.size());
+	assert(s_short == "123/123/123/123/");
+	s_short.append(s_short.data(), s_short.size());
+	assert(s_short == "123/123/123/123/123/123/123/123/");
+	
+	s_long.append(s_long.data(), s_long.size());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+	}
 }

test/std/strings/basic.string/string.modifiers/string_assign/iterator.pass.cpp

@@ -179,4 +179,21 @@ int main()
     test_exceptions(S(), TIter(s, s+10, 6, TIter::TAComparison), TIter());
 	}
 #endif
+
+	{ // test assigning to self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.assign(s_short.begin(), s_short.end());
+	assert(s_short == "123/");
+	s_short.assign(s_short.begin() + 2, s_short.end());
+	assert(s_short == "3/");
+	
+	s_long.assign(s_long.begin(), s_long.end());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/");
+
+	s_long.assign(s_long.begin() + 30, s_long.end());
+	assert(s_long == "nsectetur/");
+	}
 }

test/std/strings/basic.string/string.modifiers/string_assign/pointer.pass.cpp

@@ -61,4 +61,18 @@ int main()
          S("12345678901234567890"));
     }
 #endif
+
+	{ // test assignment to self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.assign(s_short.c_str());
+	assert(s_short == "123/");
+	s_short.assign(s_short.c_str() + 2);
+	assert(s_short == "3/");
+	
+	s_long.assign(s_long.c_str() + 30);
+	assert(s_long == "nsectetur/");
+	}
 }

test/std/strings/basic.string/string.modifiers/string_assign/pointer_size.pass.cpp

@@ -70,4 +70,20 @@ int main()
          S("12345678901234567890"));
     }
 #endif
+	{ // test assign to self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.assign(s_short.data(), s_short.size());
+	assert(s_short == "123/");
+	s_short.assign(s_short.data() + 2, s_short.size() - 2);
+	assert(s_short == "3/");
+	
+	s_long.assign(s_long.data(), s_long.size());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/");
+
+	s_long.assign(s_long.data() + 2, 8 );
+	assert(s_long == "rem ipsu");
+	}
 }

test/std/strings/basic.string/string.modifiers/string_insert/iter_iter_iter.pass.cpp

@@ -169,4 +169,21 @@ int main()
         assert(false);
     }
 #endif
+
+	{ // test inserting into self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.insert(s_short.begin(), s_short.begin(), s_short.end());
+	assert(s_short == "123/123/");
+	s_short.insert(s_short.begin(), s_short.begin(), s_short.end());
+	assert(s_short == "123/123/123/123/");
+	s_short.insert(s_short.begin(), s_short.begin(), s_short.end());
+	assert(s_short == "123/123/123/123/123/123/123/123/");
+	
+	s_long.insert(s_long.begin(), s_long.begin(), s_long.end());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+	}
+
 }

test/std/strings/basic.string/string.modifiers/string_insert/size_pointer.pass.cpp

@@ -210,4 +210,20 @@ int main()
     test(S("abcdefghijklmnopqrst"), 21, "12345678901234567890", S("can't happen"));
     }
 #endif
+
+	{ // test inserting into self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.insert(0, s_short.c_str());
+	assert(s_short == "123/123/");
+	s_short.insert(0, s_short.c_str());
+	assert(s_short == "123/123/123/123/");
+	s_short.insert(0, s_short.c_str());
+	assert(s_short == "123/123/123/123/123/123/123/123/");
+	
+	s_long.insert(0, s_long.c_str());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+	}
 }

test/std/strings/basic.string/string.modifiers/string_insert/size_pointer_size.pass.cpp

@@ -691,4 +691,20 @@ int main()
     test(S("abcdefghijklmnopqrst"), 21, "12345678901234567890", 20, S("can't happen"));
     }
 #endif
+
+	{ // test inserting into self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.insert(0, s_short.data(), s_short.size());
+	assert(s_short == "123/123/");
+	s_short.insert(0, s_short.data(), s_short.size());
+	assert(s_short == "123/123/123/123/");
+	s_short.insert(0, s_short.data(), s_short.size());
+	assert(s_short == "123/123/123/123/123/123/123/123/");
+	
+	s_long.insert(0, s_long.data(), s_long.size());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+	}
 }

test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_iter_iter.pass.cpp

@@ -1007,4 +1007,20 @@ int main()
     test_exceptions(S("abcdefghijklmnopqrst"), 10, 5, TIter(s, s+10, 6, TIter::TAComparison), TIter());
 	}
 #endif
+
+	{ // test replacing into self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.replace(s_short.begin(), s_short.begin(), s_short.begin(), s_short.end());
+	assert(s_short == "123/123/");
+	s_short.replace(s_short.begin(), s_short.begin(), s_short.begin(), s_short.end());
+	assert(s_short == "123/123/123/123/");
+	s_short.replace(s_short.begin(), s_short.begin(), s_short.begin(), s_short.end());
+	assert(s_short == "123/123/123/123/123/123/123/123/");
+	
+	s_long.replace(s_long.begin(), s_long.begin(), s_long.begin(), s_long.end());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+	}
 }

test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_pointer.pass.cpp

@@ -282,4 +282,20 @@ int main()
     test2<S>();
     }
 #endif
+
+	{ // test replacing into self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.replace(s_short.begin(), s_short.begin(), s_short.c_str());
+	assert(s_short == "123/123/");
+	s_short.replace(s_short.begin(), s_short.begin(), s_short.c_str());
+	assert(s_short == "123/123/123/123/");
+	s_short.replace(s_short.begin(), s_short.begin(), s_short.c_str());
+	assert(s_short == "123/123/123/123/123/123/123/123/");
+	
+	s_long.replace(s_long.begin(), s_long.begin(), s_long.c_str());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+	}
 }

test/std/strings/basic.string/string.modifiers/string_replace/iter_iter_pointer_size.pass.cpp

@@ -972,4 +972,20 @@ int main()
     test8<S>();
     }
 #endif
+
+	{ // test replacing into self
+    typedef std::string S;
+	S s_short = "123/";
+	S s_long  = "Lorem ipsum dolor sit amet, consectetur/";
+	
+	s_short.replace(s_short.begin(), s_short.begin(), s_short.data(), s_short.size());
+	assert(s_short == "123/123/");
+	s_short.replace(s_short.begin(), s_short.begin(), s_short.data(), s_short.size());
+	assert(s_short == "123/123/123/123/");
+	s_short.replace(s_short.begin(), s_short.begin(), s_short.data(), s_short.size());
+	assert(s_short == "123/123/123/123/123/123/123/123/");
+	
+	s_long.replace(s_long.begin(), s_long.begin(), s_long.data(), s_long.size());
+	assert(s_long == "Lorem ipsum dolor sit amet, consectetur/Lorem ipsum dolor sit amet, consectetur/");
+	}
 }