Use NullSafeStringView for const char* args to absl::StrCat, treating null pointers as ""
Fixes #1167
PiperOrigin-RevId: 449328725
Change-Id: I813785db77b94efa49eeeff4c93449334c380935
diff --git a/absl/strings/str_cat.h b/absl/strings/str_cat.h
index 4d228b0..a94bc5d 100644
--- a/absl/strings/str_cat.h
+++ b/absl/strings/str_cat.h
@@ -251,7 +251,8 @@
const strings_internal::AlphaNumBuffer<size>& buf)
: piece_(&buf.data[0], buf.size) {}
- AlphaNum(const char* c_str) : piece_(c_str) {} // NOLINT(runtime/explicit)
+ AlphaNum(const char* c_str) // NOLINT(runtime/explicit)
+ : piece_(NullSafeStringView(c_str)) {} // NOLINT(runtime/explicit)
AlphaNum(absl::string_view pc) : piece_(pc) {} // NOLINT(runtime/explicit)
template <typename Allocator>
diff --git a/absl/strings/str_cat_test.cc b/absl/strings/str_cat_test.cc
index f3770dc..69df250 100644
--- a/absl/strings/str_cat_test.cc
+++ b/absl/strings/str_cat_test.cc
@@ -210,6 +210,11 @@
EXPECT_EQ(result, "");
}
+TEST(StrCat, NullConstCharPtr) {
+ const char* null = nullptr;
+ EXPECT_EQ(absl::StrCat("mon", null, "key"), "monkey");
+}
+
// A minimal allocator that uses malloc().
template <typename T>
struct Mallocator {