A recent MinGW runtime changed its definition of alloca from an
inline function to a macro. As result, there's a warning when
compiling Gnulib's malloca.c:
CC malloca.o
In file included from malloca.h:21,
from malloca.c:22:
./alloca.h:46: warning: "alloca" redefined
46 | # define alloca __builtin_alloca
|
In file included from ./alloca.h:44,
from malloca.h:21,
from malloca.c:22:
d:\usr\include\alloca.h:81: note: this is the location of the previous
definition
81 | #define alloca( __request ) __builtin_alloca( __request )
|
Proposed patch is below. Thanks.
--- alloca.h~0 2020-06-29 18:22:39.421875000 +0300
+++ alloca.h 2020-06-29 19:21:42.468750000 +0300
@@ -36,10 +36,16 @@
*/
#ifndef alloca
+/* Some version of mingw have an <alloca.h> that causes trouble when
+ included after 'alloca' gets defined as a macro. As a workaround,
+ include this <alloca.h> first and define 'alloca' as a macro
+ afterwards if needed. */
+# if (defined __GNUC__ && defined _WIN32 && ! defined __CYGWIN__) && 1
+# include_next <alloca.h>
+# endif
+#endif
+#ifndef alloca
# ifdef __GNUC__
- /* Some version of mingw have an <alloca.h> that causes trouble when
- included after 'alloca' gets defined as a macro. As a workaround,
include
- this <alloca.h> first and define 'alloca' as a macro afterwards. */
# if (defined _WIN32 && ! defined __CYGWIN__) && 1
# include_next <alloca.h>
# endif
