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Fix fmt function to handle null pointers and return empty string

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This commit is contained in:
mutouyun 2025-01-11 18:39:07 +08:00
parent 00162b96b9
commit 86d9d868c8
2 changed files with 7 additions and 5 deletions
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7
src/libipc/imp/fmt.cpp
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@ -221,8 +221,11 @@ bool to_string(fmt_context &ctx, std::string const &a) noexcept {
}
bool to_string(fmt_context &ctx, char const *a, span<char const> fstr) noexcept {
if (a == nullptr) return false;
return ipc::sprintf(ctx, fmt_of, fstr, "s", a);
if (a == nullptr) {
return ipc::sprintf(ctx, fmt_of, fstr, "s", "");
} else {
return ipc::sprintf(ctx, fmt_of, fstr, "s", a);
}
}
bool to_string(fmt_context &ctx, char a) noexcept {

5
test/imp/test_imp_fmt.cpp
View File

@ -112,11 +112,10 @@ TEST(fmt, fmt) {
EXPECT_EQ(s, test);
EXPECT_EQ(ipc::fmt("", 1, "", '2', "", 3.0), "123.000000");
char const * nc = nullptr;
EXPECT_EQ(ipc::fmt(nc, 1, "", '2', "", 3.0), "123.000000");
std::string empty;
EXPECT_EQ(ipc::fmt(empty, 1, "", '2', "", 3.0), "123.000000");
EXPECT_EQ(ipc::fmt(empty, 1, empty, '2', "", 3.0), "123.000000");
EXPECT_EQ(ipc::fmt("", 1, empty, '2', empty, 3.0), "123.000000");
EXPECT_EQ(ipc::fmt("", 1, "", '2', empty), "12");
}
namespace {