llvm-project.git/libc/src/__support/StringUtil/error_to_string.cpp, branch main

[libc] Use anonymous namespace for file-local symbols (#157202)

2025-09-06T00:15:12+00:00

A namespace like LIBC_NAMESPACE::internal should only ever be
defined if it's providing global symbols declared in headers.
These StringUtil implementations were defining global namespaced
symbols for their file-local helper code, which they should not.

[libc] Add printf strerror conversion (%m) (#105891)

2024-09-19T17:48:08+00:00

This patch adds the %m conversion to printf, which prints the
strerror(errno). Explanation of why is below, this patch also updates
the docs, tests, and build system to accomodate this.

The standard for syslog in posix specifies it uses the same format as
printf, but adds %m which prints the error message string for the
current value of errno. For ease of implementation, it's standard
practice for libc implementers to just add %m to printf instead of
creating a separate parser for syslog.

[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98597)

2024-07-12T16:28:41+00:00

This is a part of #97655.

Revert "[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration" (#98593)

2024-07-12T07:12:13+00:00

Reverts llvm/llvm-project#98075

bots are broken

[libc] Migrate to using LIBC_NAMESPACE_DECL for namespace declaration (#98075)

2024-07-11T19:35:22+00:00

This is a part of #97655.

[libc] Mass replace enclosing namespace (#67032)

2023-09-26T09:45:04+00:00

This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079

[libc] Better IntegerToString API

2023-08-09T07:33:29+00:00

This patch is an alternative to D155902. It provides the following benefits:
 - No buffer manual allocation and error handling for the general case
 - More flexible API : width specifier, sign and prefix handling
 - Simpler code

The more flexible API removes the need for manually tweaking the buffer afterwards, and so prevents relying on implementation details of IntegerToString.

Reviewed By: michaelrj, jhuber6

Differential Revision: https://reviews.llvm.org/D156981

Revert "[libc] Better IntegerToString API"

2023-08-08T20:52:50+00:00

This reverts commit 910cc05aae85a6b31e2a2ed87d3dd46db46fce04.

[libc] Better IntegerToString API

2023-08-08T20:39:13+00:00

This patch is an alternative to D155902. It provides the following benefits:
 - No buffer manual allocation and error handling for the general case
 - More flexible API : width specifier, sign and prefix handling
 - Simpler code

The more flexible API removes the need for manually tweaking the buffer afterwards, and so prevents relying on implementation details of IntegerToString.

Reviewed By: michaelrj, jhuber6

Differential Revision: https://reviews.llvm.org/D156981

[libc] Add macro LIBC_THREAD_LOCAL.

2023-05-25T19:53:52+00:00

It resolves to thread_local on all platform except for the GPUs on which
it resolves to nothing. The use of thread_local in the source code has been
replaced with the new macro.

Reviewed By: jhuber6

Differential Revision: https://reviews.llvm.org/D151486