diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | m4/gnulib-common.m4 | 5 |
2 files changed, 11 insertions, 1 deletions
@@ -1,5 +1,12 @@ 2023-01-28 Bruno Haible <bruno@clisp.org> + Clarify _GL_ATTRIBUTE_NODISCARD code. + Reported by Paul Eggert. + * m4/gnulib-common.m4 (gl_COMMON_BODY): Add comment regarding + _GL_ATTRIBUTE_NODISCARD definition. + +2023-01-28 Bruno Haible <bruno@clisp.org> + unistdio/*printf: Fix negative width handling for %U, %lU, %llU. * lib/vasnprintf.c (VASNPRINTF): In the code for %U, %lU, %llU, test for the FLAG_LEFT bit in the flags variable. diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4 index d632819864..c0181abdc5 100644 --- a/m4/gnulib-common.m4 +++ b/m4/gnulib-common.m4 @@ -381,7 +381,10 @@ AC_DEFUN([gl_COMMON_BODY], [ #ifndef _GL_ATTRIBUTE_NODISCARD # if defined __clang__ && defined __cplusplus /* With clang up to 15.0.6 (at least), in C++ mode, [[__nodiscard__]] produces - a warning. */ + a warning. + The 1000 below means a yet unknown threshold. When clang++ version X + starts supporting [[__nodiscard__]] without warning about it, you can + replace the 1000 with X. */ # if __clang_major__ >= 1000 # define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]] # endif |