[PATCH] intprops: document fix for GCC bug 68193

[Paul Eggert]

* lib/intprops-internal.h (_GL__GENERIC_BOGUS):
GCC bug 68193 is fixed in GCC 14.  This is just for documentation,
as _GL__GENERIC_BOGUS is not consulted in GCC 14.
---
 ChangeLog               | 7 +++++++
 lib/intprops-internal.h | 4 ++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index bf68bf6369..e2c736f854 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2024-04-30  Paul Eggert  <eggert@cs.ucla.edu>
+
+       intprops: document fix for GCC bug 68193
+       * lib/intprops-internal.h (_GL__GENERIC_BOGUS):
+       GCC bug 68193 is fixed in GCC 14.  This is just for documentation,
+       as _GL__GENERIC_BOGUS is not consulted in GCC 14.
+
 2024-04-30  Bruno Haible  <bruno@clisp.org>
 
        *printf: Don't invoke gl_PRINTF_DIRECTIVE_N when it's not needed.
diff --git a/lib/intprops-internal.h b/lib/intprops-internal.h
index b5ba8d7cbd..443024c665 100644
--- a/lib/intprops-internal.h
+++ b/lib/intprops-internal.h
@@ -185,10 +185,10 @@
 /* Nonzero if this compiler has GCC bug 68193 or Clang bug 25390.  See:
    https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68193
    https://llvm.org/bugs/show_bug.cgi?id=25390
-   For now, assume all versions of GCC-like compilers generate bogus
+   For now, assume GCC < 14 and all Clang versions generate bogus
    warnings for _Generic.  This matters only for compilers that
    lack relevant builtins.  */
-#if __GNUC__ || defined __clang__
+#if (__GNUC__ && __GNUC__ < 14) || defined __clang__
 # define _GL__GENERIC_BOGUS 1
 #else
 # define _GL__GENERIC_BOGUS 0
-- 
2.44.0