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| author | Michael Meissner <meissner@gcc.gnu.org> | 1993-01-25 03:40:07 +0000 |
|---|---|---|
| committer | Michael Meissner <meissner@gcc.gnu.org> | 1993-01-25 03:40:07 +0000 |
| commit | 82bde8543bc70f5cec5fe54150f4907d8445b8c9 (patch) | |
| tree | 590dc583870707060c0197b1ad2619268921b078 | |
| parent | 21cd4ffcadaa122bbd82c734f250b16c8946ce62 (diff) | |
| download | gcc-82bde8543bc70f5cec5fe54150f4907d8445b8c9.zip gcc-82bde8543bc70f5cec5fe54150f4907d8445b8c9.tar.gz gcc-82bde8543bc70f5cec5fe54150f4907d8445b8c9.tar.bz2 | |
Do not give a warning for a plain 0 used in a pointer context.
From-SVN: r3322
| -rw-r--r-- | gcc/c-typeck.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c index d1f49a7..98a3c9e 100644 --- a/gcc/c-typeck.c +++ b/gcc/c-typeck.c @@ -56,6 +56,8 @@ static void pedantic_lvalue_warning (); tree truthvalue_conversion (); void incomplete_type_error (); void readonly_warning (); +static tree internal_build_compound_expr (); + /* Do `exp = require_complete_type (exp);' to make sure exp does not have an incomplete type. (That includes void types.) */ @@ -3633,6 +3635,14 @@ tree build_compound_expr (list) tree list; { + internal_build_compound_expr (list, TRUE); +} + +static tree +internal_build_compound_expr (list, first_p) + tree list; + int first_p; +{ register tree rest; if (TREE_CHAIN (list) == 0) @@ -3646,7 +3656,7 @@ build_compound_expr (list) #endif /* Don't let (0, 0) be null pointer constant. */ - if (integer_zerop (TREE_VALUE (list))) + if (!first_p && integer_zerop (TREE_VALUE (list))) return non_lvalue (TREE_VALUE (list)); return TREE_VALUE (list); } @@ -3659,7 +3669,7 @@ build_compound_expr (list) = default_conversion (TREE_VALUE (TREE_CHAIN (list))); } - rest = build_compound_expr (TREE_CHAIN (list)); + rest = internal_build_compound_expr (TREE_CHAIN (list), FALSE); if (! TREE_SIDE_EFFECTS (TREE_VALUE (list))) return rest; |