diff options
Diffstat (limited to 'm4/free.m4')
| -rw-r--r-- | m4/free.m4 | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/m4/free.m4 b/m4/free.m4 index c7a134bab8a..e9c9d8f35c6 100644 --- a/m4/free.m4 +++ b/m4/free.m4 @@ -1,5 +1,5 @@ # free.m4 -# serial 6 +# serial 7 dnl Copyright (C) 2003-2005, 2009-2026 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -18,6 +18,9 @@ AC_DEFUN([gl_FUNC_FREE], dnl So far, we know of three platforms that do this: dnl * glibc >= 2.33, thanks to the fix for this bug: dnl <https://sourceware.org/PR17924> + dnl * musl >= 1.2.3, thanks to these commits: + dnl <https://git.musl-libc.org/cgit/musl/commit/?id=9b77aaca86b53c367f23505c24dd3c02e240efad> + dnl <https://git.musl-libc.org/cgit/musl/commit/?id=2010df0d64570db4ce29cc7df0e31f81aa26ae4a> dnl * OpenBSD >= 4.5, thanks to this commit: dnl <https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libc/stdlib/malloc.c.diff?r1=1.100&r2=1.101&f=h> dnl * Solaris, because its malloc() implementation is based on brk(), @@ -26,11 +29,14 @@ AC_DEFUN([gl_FUNC_FREE], dnl documentation, or by code inspection of the free() implementation in libc. AC_CACHE_CHECK([whether free is known to preserve errno], [gl_cv_func_free_preserves_errno], - [AC_COMPILE_IFELSE( + [AC_REQUIRE([gl_MUSL_LIBC]) + AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include <stdlib.h> + #include <unistd.h> ]], [[#if 2 < __GLIBC__ + (33 <= __GLIBC_MINOR__) + #elif defined MUSL_LIBC && defined SEEK_DATA /* musl >= 1.2.3 */ #elif defined __OpenBSD__ #elif defined __sun #else |