Fix leaky diagnostic ignored pragma
#4588
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Ignoring the `-Wconversion` diagnostic in `make_format_args` was leaking out of the header, resulting in that warning being ignored in downstream code that includes `fmt/base.h`. Instead, we should `push`/`pop` the diagnostics to ensure this is cleaned up.
Contributor
|
Thanks for the PR! The lint issue is preexisting and can be ignored - I'll fix it separately. |
netbsd-srcmastr
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Nov 2, 2025
# 12.1.0 - 2025-10-29 - Optimized `buffer::append`, resulting in up to ~16% improvement on spdlog benchmarks (fmtlib/fmt#4541). Thanks @fyrsta7. - Worked around an ABI incompatibility in `std::locale_ref` between clang and gcc (fmtlib/fmt#4573). - Made `std::variant` and `std::expected` formatters work with `format_as` (fmtlib/fmt#4574, fmtlib/fmt#4575). Thanks @phprus. - Made `fmt::join<string_view>` work with C++ modules (fmtlib/fmt#4379, fmtlib/fmt#4577). Thanks @Arghnews. - Exported `fmt::is_compiled_string` and `operator""_cf` from the module (fmtlib/fmt#4544). Thanks @CrackedMatter. - Fixed a compatibility issue with C++ modules in clang (fmtlib/fmt#4548). Thanks @tsarn. - Added support for cv-qualified types to the `std::optional` formatter (fmtlib/fmt#4561, fmtlib/fmt#4562). Thanks @OleksandrKvl. - Added demangling support (used in exception and `std::type_info` formatters) for libc++ and clang-cl (fmtlib/fmt#4542, fmtlib/fmt#4560, fmtlib/fmt#4568, fmtlib/fmt#4571). Thanks @FatihBAKIR and @rohitsutreja. - Switched to global `malloc`/`free` to enable allocator customization (fmtlib/fmt#4569, fmtlib/fmt#4570). Thanks @rohitsutreja. - Made the `FMT_USE_CONSTEVAL` macro configurable by users (fmtlib/fmt#4546). Thanks @SnapperTT. - Fixed compilation with locales disabled in the header-only mode (fmtlib/fmt#4550). - Fixed compilation with clang 21 and `-std=c++20` (fmtlib/fmt#4552). - Fixed a dynamic linking issue with clang-cl (fmtlib/fmt#4576, fmtlib/fmt#4584). Thanks @FatihBAKIR. - Fixed a warning suppression leakage on gcc (fmtlib/fmt#4588). Thanks @ZedThree. - Made more internal color APIs `constexpr` (fmtlib/fmt#4581). Thanks @ishani. - Fixed compatibility with clang as a host compiler for NVCC (fmtlib/fmt#4564). Thanks @valgur. - Fixed various warnings and lint issues (fmtlib/fmt#4565, fmtlib/fmt#4572, fmtlib/fmt#4557). Thanks @LiangHuDream and @teruyamato0731. - Improved documentation (fmtlib/fmt#4549, fmtlib/fmt#4551, fmtlib/fmt#4566, fmtlib/fmt#4567, fmtlib/fmt#4578,). Thanks @teruyamato0731, @petersteneteg and @zimmerman-dev.
mtremer
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Nov 6, 2025
- Update from version 11.2.0 to 12.1.0
- Update of rootfile
- so-bump so mpd requires shipping
- Changelog
12.1.0
- Optimized `buffer::append`, resulting in up to ~16% improvement on spdlog
benchmarks (fmtlib/fmt#4541). Thanks @fyrsta7.
- Worked around an ABI incompatibility in `std::locale_ref` between clang and
gcc (fmtlib/fmt#4573).
- Made `std::variant` and `std::expected` formatters work with `format_as`
(fmtlib/fmt#4574,
fmtlib/fmt#4575). Thanks @phprus.
- Made `fmt::join<string_view>` work with C++ modules
(fmtlib/fmt#4379,
fmtlib/fmt#4577). Thanks @Arghnews.
- Exported `fmt::is_compiled_string` and `operator""_cf` from the module
(fmtlib/fmt#4544). Thanks @CrackedMatter.
- Fixed a compatibility issue with C++ modules in clang
(fmtlib/fmt#4548). Thanks @tsarn.
- Added support for cv-qualified types to the `std::optional` formatter
(fmtlib/fmt#4561,
fmtlib/fmt#4562). Thanks @OleksandrKvl.
- Added demangling support (used in exception and `std::type_info` formatters)
for libc++ and clang-cl
(fmtlib/fmt#4542,
fmtlib/fmt#4560,
fmtlib/fmt#4568,
fmtlib/fmt#4571).
Thanks @FatihBAKIR and @rohitsutreja.
- Switched to global `malloc`/`free` to enable allocator customization
(fmtlib/fmt#4569,
fmtlib/fmt#4570). Thanks @rohitsutreja.
- Made the `FMT_USE_CONSTEVAL` macro configurable by users
(fmtlib/fmt#4546). Thanks @SnapperTT.
- Fixed compilation with locales disabled in the header-only mode
(fmtlib/fmt#4550).
- Fixed compilation with clang 21 and `-std=c++20`
(fmtlib/fmt#4552).
- Fixed a dynamic linking issue with clang-cl
(fmtlib/fmt#4576,
fmtlib/fmt#4584). Thanks @FatihBAKIR.
- Fixed a warning suppression leakage on gcc
(fmtlib/fmt#4588). Thanks @ZedThree.
- Made more internal color APIs `constexpr`
(fmtlib/fmt#4581). Thanks @ishani.
- Fixed compatibility with clang as a host compiler for NVCC
(fmtlib/fmt#4564). Thanks @valgur.
- Fixed various warnings and lint issues
(fmtlib/fmt#4565,
fmtlib/fmt#4572,
fmtlib/fmt#4557).
Thanks @LiangHuDream and @teruyamato0731.
- Improved documentation
(fmtlib/fmt#4549,
fmtlib/fmt#4551,
fmtlib/fmt#4566,
fmtlib/fmt#4567,
fmtlib/fmt#4578,).
Thanks @teruyamato0731, @petersteneteg and @zimmerman-dev.
12.0.0
- Optimized the default floating point formatting
(fmtlib/fmt#3675,
fmtlib/fmt#4516). In particular, formatting a
`double` with format string compilation into a stack allocated buffer is
more than 60% faster in version 12.0 compared to 11.2 according to
[dtoa-benchmark](https://github.com/fmtlib/dtoa-benchmark):
```
Function Time (ns) Speedup
fmt11 34.471 1.00x
fmt12 21.000 1.64x
```
<img width="766" height="609" src="https://github.com/user-attachments/assets/d7d768ad-7543-468c-b0bb-449abf73b31b" />
- Added `constexpr` support to `fmt::format`. For example:
```c++
#include <fmt/compile.h>
using namespace fmt::literals;
std::string s = fmt::format(""_cf, 42);
```
now works at compile time provided that `std::string` supports `constexpr`
(fmtlib/fmt#3403,
fmtlib/fmt#4456). Thanks @msvetkin.
- Added `FMT_STATIC_FORMAT` that allows formatting into a string of the exact
required size at compile time.
For example:
```c++
#include <fmt/compile.h>
constexpr auto s = FMT_STATIC_FORMAT("{}", 42);
```
compiles to just
```s
__ZL1s:
.asciiz "42"
```
It can be accessed as a C string with `s.c_str()` or as a string view with
`s.str()`.
- Improved C++20 module support
(fmtlib/fmt#4451,
fmtlib/fmt#4459,
fmtlib/fmt#4476,
fmtlib/fmt#4488,
fmtlib/fmt#4491,
fmtlib/fmt#4495).
Thanks @arBmind, @tkhyn, @Mishura4, @anonymouspc and @autoantwort.
- Switched to using estimated display width in precision. For example:
```c++
fmt::print("|{:.4}|\n|1234|\n", "🐱🐱🐱");
```
prints
because `🐱` has an estimated width of 2
(fmtlib/fmt#4272,
fmtlib/fmt#4443,
fmtlib/fmt#4475).
Thanks @nikhilreddydev and @localspook.
- Fix interaction between debug presentation, precision, and width for strings
(fmtlib/fmt#4478). Thanks @localspook.
- Implemented allocator propagation on `basic_memory_buffer` move
(fmtlib/fmt#4487,
fmtlib/fmt#4490). Thanks @toprakmurat.
- Fixed an ambiguity between `std::reference_wrapper<T>` and `format_as`
formatters (fmtlib/fmt#4424,
fmtlib/fmt#4434). Thanks @jeremy-rifkin.
- Removed the following deprecated APIs:
- `has_formatter`: use `is_formattable` instead,
- `basic_format_args::parse_context_type`,
`basic_format_args::formatter_type` and similar aliases in context types,
- wide stream overload of `fmt::printf`,
- wide stream overloads of `fmt::print` that take text styles,
- `is_*char` traits,
- `fmt::localtime`.
- Deprecated wide overloads of `fmt::fprintf` and `fmt::sprintf`.
- Improved diagnostics for the incorrect usage of `fmt::ptr`
(fmtlib/fmt#4453). Thanks @TobiSchluter.
- Made handling of ANSI escape sequences more efficient
(fmtlib/fmt#4511,
fmtlib/fmt#4528).
Thanks @localspook and @Anas-Hamdane.
- Fixed a buffer overflow on all emphasis flags set
(fmtlib/fmt#4498). Thanks @dominicpoeschko.
- Fixed an integer overflow for precision close to the max `int` value.
- Fixed compatibility with WASI (fmtlib/fmt#4496,
fmtlib/fmt#4497). Thanks @whitequark.
- Fixed `back_insert_iterator` detection, preventing a fallback on slower path
that handles arbitrary iterators (fmtlib/fmt#4454).
- Fixed handling of invalid glibc `FILE` buffers
(fmtlib/fmt#4469).
- Added `wchar_t` support to the `std::byte` formatter
(fmtlib/fmt#4479,
fmtlib/fmt#4480). Thanks @phprus.
- Changed component prefix from `fmt-` to `fmt_` for compatibility with
NSIS/CPack on Windows, e.g. `fmt-doc` changed to `fmt_doc`
(fmtlib/fmt#4441,
fmtlib/fmt#4442). Thanks @n-stein.
- Added the `FMT_CUSTOM_ASSERT_FAIL` macro to simplify providing a custom
`fmt::assert_fail` implementation (fmtlib/fmt#4505).
Thanks @HazardyKnusperkeks.
- Switched to `FMT_THROW` on reporting format errors so that it can be
overriden by users when exceptions are disabled
(fmtlib/fmt#4521). Thanks @HazardyKnusperkeks.
- Improved master project detection and disabled install targets when using
{fmt} as a subproject by default (fmtlib/fmt#4536).
Thanks @crueter.
- Made various code improvements
(fmtlib/fmt#4445,
fmtlib/fmt#4448,
fmtlib/fmt#4473,
fmtlib/fmt#4522).
Thanks @localspook, @tchaikov and @way4sahil.
- Added Conan instructions to the docs
(fmtlib/fmt#4537). Thanks @uilianries.
- Removed Bazel files to avoid issues with downstream packaging
(fmtlib/fmt#4530). Thanks @mering.
- Added more entries for generated files to `.gitignore`
(fmtlib/fmt#4355,
fmtlib/fmt#4512).
Thanks @dinomight and @localspook.
- Fixed various warnings and compilation issues
(fmtlib/fmt#4447,
fmtlib/fmt#4470,
fmtlib/fmt#4474,
fmtlib/fmt#4477,
fmtlib/fmt#4471,
fmtlib/fmt#4483,
fmtlib/fmt#4515,
fmtlib/fmt#4533,
fmtlib/fmt#4534).
Thanks @dodomorandi, @localspook, @remyjette, @Tomek-Stolarczyk, @Mishura4,
@mattiasljungstrom and @FatihBAKIR.
Signed-off-by: Adolf Belka <[email protected]>
Signed-off-by: Michael Tremer <[email protected]>
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Ignoring the
-Wconversiondiagnostic inmake_format_argswas leaking out of the header, resulting in that warning being ignored in downstream code that includesfmt/base.h:fmt/include/fmt/base.h
Lines 2823 to 2828 in 9395ef5
We should
push/popthe diagnostics to ensure this is cleaned up (as is done for clang and for GCC options).See this Compiler Explorer reproducer for the problem. You can see that gcc doesn't raise a warning while clang does. Commenting out the
#include <fmt/base.h>restores the correct behaviour.