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Suppress Clang -Wgnu-folding-constant warnings

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Suppress Clang -Wgnu-folding-constant warnings, like

tst-freopen.c:44:13: error: variable length array folded to constant array as an extension [-Werror,-Wgnu-folding-constant]
   44 |   char temp[strlen (test) + 1];
      |             ^~~~~~~~~~~~~~~~~

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Reviewed-by: Sam James <sam@gentoo.org>
This commit is contained in:
H.J. Lu 2024-12-20 04:51:03 +08:00
parent 601b3d5db2
commit daf47b66df
2 changed files with 8 additions and 0 deletions
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4
libio/tst-freopen.c
View file

@ -20,6 +20,7 @@
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <unistd.h> #include <unistd.h>
#include <libc-diag.h>
#include <support/check.h> #include <support/check.h>
#include <support/temp_file.h> #include <support/temp_file.h>
@ -41,7 +42,10 @@ static void
do_test_basic (void) do_test_basic (void)
{ {
const char * const test = "Let's test freopen.\n"; const char * const test = "Let's test freopen.\n";
DIAG_PUSH_NEEDS_COMMENT_CLANG;
DIAG_IGNORE_NEEDS_COMMENT_CLANG (3.4, "-Wgnu-folding-constant");
char temp[strlen (test) + 1]; char temp[strlen (test) + 1];
DIAG_POP_NEEDS_COMMENT_CLANG;
FILE *f = fdopen (fd, "w"); FILE *f = fdopen (fd, "w");
if (f == NULL) if (f == NULL)

4
libio/tst-mmap-setvbuf.c
View file

@ -20,13 +20,17 @@
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <unistd.h> #include <unistd.h>
#include <libc-diag.h>
int main (void) int main (void)
{ {
char name[] = "/tmp/tst-mmap-setvbuf.XXXXXX"; char name[] = "/tmp/tst-mmap-setvbuf.XXXXXX";
char buf[4096]; char buf[4096];
const char * const test = "Let's see if mmap stdio works with setvbuf.\n"; const char * const test = "Let's see if mmap stdio works with setvbuf.\n";
DIAG_PUSH_NEEDS_COMMENT_CLANG;
DIAG_IGNORE_NEEDS_COMMENT_CLANG (3.4, "-Wgnu-folding-constant");
char temp[strlen (test) + 1]; char temp[strlen (test) + 1];
DIAG_POP_NEEDS_COMMENT_CLANG;
int fd = mkstemp (name); int fd = mkstemp (name);
FILE *f; FILE *f;