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| author | Kaveh R. Ghazi <ghazi@caip.rutgers.edu> | 1999-10-28 10:53:12 +0000 |
|---|---|---|
| committer | Kaveh Ghazi <ghazi@gcc.gnu.org> | 1999-10-28 10:53:12 +0000 |
| commit | 301452153700ff8c81d28e58a9e10117655b6a00 (patch) | |
| tree | 9d365ca91c18b8d79fd064f558e97fee4360397f /gcc/c-common.c | |
| parent | 4404ce281deeb8bff4464e6987fc649510c8c639 (diff) | |
| download | gcc-301452153700ff8c81d28e58a9e10117655b6a00.zip gcc-301452153700ff8c81d28e58a9e10117655b6a00.tar.gz gcc-301452153700ff8c81d28e58a9e10117655b6a00.tar.bz2 | |
c-common.c (check_format_info): Avoid non-literal format string warnings when `first_arg_num' is zero.
* c-common.c (check_format_info): Avoid non-literal format string
warnings when `first_arg_num' is zero.
From-SVN: r30240
Diffstat (limited to 'gcc/c-common.c')
| -rw-r--r-- | gcc/c-common.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/gcc/c-common.c b/gcc/c-common.c index 3e9d962..8b2f69c 100644 --- a/gcc/c-common.c +++ b/gcc/c-common.c @@ -1491,7 +1491,11 @@ check_format_info (info, params) { /* The user may get multiple warnings if the supplied argument isn't even a string pointer. */ - warning ("format not a string literal, argument types not checked"); + /* Functions taking a va_list normally pass a non-literal format + string. These functions typically are declared with + first_arg_num == 0, so avoid warning in those cases. */ + if (info->first_arg_num != 0) + warning ("format not a string literal, argument types not checked"); return; } format_tree = TREE_OPERAND (format_tree, 0); @@ -1499,7 +1503,11 @@ check_format_info (info, params) { /* The user may get multiple warnings if the supplied argument isn't even a string pointer. */ - warning ("format not a string literal, argument types not checked"); + /* Functions taking a va_list normally pass a non-literal format + string. These functions typically are declared with + first_arg_num == 0, so avoid warning in those cases. */ + if (info->first_arg_num != 0) + warning ("format not a string literal, argument types not checked"); return; } format_chars = TREE_STRING_POINTER (format_tree); |