diff options
Diffstat (limited to 'clang/test/Sema/format-strings-signedness.cpp')
| -rw-r--r-- | clang/test/Sema/format-strings-signedness.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/clang/test/Sema/format-strings-signedness.cpp b/clang/test/Sema/format-strings-signedness.cpp new file mode 100644 index 0000000..66bf1de --- /dev/null +++ b/clang/test/Sema/format-strings-signedness.cpp @@ -0,0 +1,30 @@ +// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -verify -Wformat -Wformat-signedness %s +// RUN: %clang_cc1 -triple=x86_64-pc-win32 -fsyntax-only -verify -Wformat -Wformat-signedness %s + +// Verify that -Wformat-signedness alone (without -Wformat) trigger the +// warnings. Note in gcc this will not trigger the signedness warnings as +// -Wformat is default off in gcc. +// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -verify -Wformat-signedness %s +// RUN: %clang_cc1 -triple=x86_64-pc-win32 -fsyntax-only -verify -Wformat-signedness %s + +// Verify that -Wformat-signedness warnings are not reported with only -Wformat +// (gcc compat). +// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -Wformat -verify=okay %s + +// Verify that -Wformat-signedness with -Wno-format are not reported (gcc compat). +// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -Wformat-signedness -Wno-format -verify=okay %s +// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -fsyntax-only -Wno-format -Wformat-signedness -verify=okay %s +// okay-no-diagnostics + +// Ignore 'GCC requires a function with the 'format' attribute to be variadic'. +#pragma GCC diagnostic ignored "-Wgcc-compat" +namespace GH161075 { +template <typename... Args> +void format(const char *fmt, Args &&...args) + __attribute__((format(printf, 1, 2))); + +void do_format() { + bool b = false; + format("%hhi %hhu %hi %hu %i %u", b, b, b, b, b, b); // expected-warning {{format specifies type 'unsigned char' but the argument has type 'bool', which differs in signedness}} +} +} // namespace GH161075 |