diff options
Diffstat (limited to 'stdio-common')
| -rw-r--r-- | stdio-common/bug21.c | 9 | ||||
| -rw-r--r-- | stdio-common/scanf14.c | 21 |
2 files changed, 30 insertions, 0 deletions
diff --git a/stdio-common/bug21.c b/stdio-common/bug21.c index d22b9c1a97..ca27272ba1 100644 --- a/stdio-common/bug21.c +++ b/stdio-common/bug21.c @@ -1,4 +1,5 @@ #include <stdio.h> +#include <libc-internal.h> static int do_test (void) @@ -6,7 +7,15 @@ do_test (void) static const char buf[] = " "; char *str; + /* GCC in C99 mode treats %a as the C99 format expecting float *, + but glibc with _GNU_SOURCE treats %as as the GNU allocation + extension, so resulting in "warning: format '%a' expects argument + of type 'float *', but argument 3 has type 'char **'". This + applies to the other %as, %aS and %a[] formats below as well. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); int r = sscanf (buf, "%as", &str); + DIAG_POP_NEEDS_COMMENT; printf ("%d %p\n", r, str); return r != -1 || str != NULL; diff --git a/stdio-common/scanf14.c b/stdio-common/scanf14.c index 6ca5c7c567..cffccb0b19 100644 --- a/stdio-common/scanf14.c +++ b/stdio-common/scanf14.c @@ -2,6 +2,7 @@ #include <stdlib.h> #include <string.h> #include <wchar.h> +#include <libc-internal.h> #define FAIL() \ do { \ @@ -23,6 +24,13 @@ main (void) FAIL (); else if (f != 0.25 || memcmp (c, "s x", 3) != 0) FAIL (); + /* GCC in C99 mode treats %a as the C99 format expecting float *, + but glibc with _GNU_SOURCE treats %as as the GNU allocation + extension, so resulting in "warning: format '%a' expects argument + of type 'float *', but argument 3 has type 'char **'". This + applies to the other %as, %aS and %a[] formats below as well. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); if (sscanf (" 1.25s x", "%as%2c", &sp, c) != 2) FAIL (); else @@ -32,10 +40,14 @@ main (void) memset (sp, 'x', sizeof "1.25s"); free (sp); } + DIAG_POP_NEEDS_COMMENT; if (sscanf (" 2.25s x", "%las%2c", &d, c) != 2) FAIL (); else if (d != 2.25 || memcmp (c, " x", 2) != 0) FAIL (); + /* See explanation above. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); if (sscanf (" 3.25S x", "%4aS%3c", &lsp, c) != 2) FAIL (); else @@ -54,6 +66,7 @@ main (void) memset (sp, 'x', sizeof "4.25"); free (sp); } + DIAG_POP_NEEDS_COMMENT; if (sscanf ("5.25[0-9.] x", "%la[0-9.]%2c", &d, c) != 2) FAIL (); else if (d != 5.25 || memcmp (c, " x", 2) != 0) @@ -82,6 +95,9 @@ main (void) FAIL (); if (fseek (fp, 0, SEEK_SET) != 0) FAIL (); + /* See explanation above. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); if (fscanf (fp, "%as%2c", &sp, c) != 2) FAIL (); else @@ -91,11 +107,15 @@ main (void) memset (sp, 'x', sizeof "1.25s"); free (sp); } + DIAG_POP_NEEDS_COMMENT; if (freopen (fname, "r", stdin) == NULL) FAIL (); else { + /* See explanation above. */ + DIAG_PUSH_NEEDS_COMMENT; + DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wformat"); if (scanf ("%as%2c", &sp, c) != 2) FAIL (); else @@ -105,6 +125,7 @@ main (void) memset (sp, 'x', sizeof "1.25s"); free (sp); } + DIAG_POP_NEEDS_COMMENT; } fclose (fp); |