diff --git a/gnulib/import/m4/gnulib-common.m4 b/gnulib/import/m4/gnulib-common.m4
--- a/gnulib/import/m4/gnulib-common.m4
+++ b/gnulib/import/m4/gnulib-common.m4
@@ -182,7 +182,8 @@ AC_DEFUN([gl_COMMON_BODY], [
    _GL_ATTRIBUTE_DEALLOC_FREE declares that the function returns pointers that
    can be freed via 'free'; it can be used only after declaring 'free'.  */
 /* Applies to: functions.  Cannot be used on inline functions.  */
-#if _GL_GNUC_PREREQ (11, 0)
+/* Disable on Solaris to avoid GDB PR build/29791.  */
+#if _GL_GNUC_PREREQ (11, 0) && !(defined(__sun__) && defined(__svr4__))
 # define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i)))
 #else
 # define _GL_ATTRIBUTE_DEALLOC(f, i)