diff options
| author | Will Cohen <wcohen@redhat.com> | 2000-10-04 18:03:33 +0000 |
|---|---|---|
| committer | William Cohen <wcohen@gcc.gnu.org> | 2000-10-04 18:03:33 +0000 |
| commit | 4b606faf44b11ba1155388afca7abfd5e922b023 (patch) | |
| tree | 50adc28a80efb5aff96a5d508de8bc7cc9824c02 /gcc | |
| parent | 3a4fee6674b8b7a3ece873a3ac19fa2fea41bf8e (diff) | |
| download | gcc-4b606faf44b11ba1155388afca7abfd5e922b023.zip gcc-4b606faf44b11ba1155388afca7abfd5e922b023.tar.gz gcc-4b606faf44b11ba1155388afca7abfd5e922b023.tar.bz2 | |
Patched code to generate warning when trying to perform static
initialization of zero-length arrays.
From-SVN: r36714
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 19 | ||||
| -rw-r--r-- | gcc/c-typeck.c | 3 | ||||
| -rw-r--r-- | gcc/extend.texi | 4 |
3 files changed, 14 insertions, 12 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 405b691..eede1ca 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2000-10-04 Will Cohen <wcohen@redhat.com> + + * c-typeck.c (process_init_element): Added warning for zero-length + array. + + * extend.texi (Zero Length): State that static initializers for + zero-length arrays are not allowed. + Mon Oct 2 14:50:14 MET DST 2000 Jan Hubicka <jh@suse.cz> * rtlanal.c (single_set_1): Do not require USE and CLOBBERs @@ -1139,17 +1147,6 @@ Mon 18-Sep-2000 19:21:35 BST Neil Booth <NeilB@earthling.net> * config/sh/sh.md (sym_label2reg, symPLT_label2reg): Protect LABEL_REFs with a PIC-safe unspec. -2000-09-18 Will Cohen <wcohen@redhat.com> - - * extend.texi (Zero Length): State that static initializers for - zero-length arrays are not allowed. - - * c-typeck.c (process_init_element): Flag initializers for zero - length arrays. - - * tree.c (integer_all_onesp): Ignore TREE_INT_CST_HIGH if prec is - exactly HOST_BITS_PERWIDE_INT. - 2000-09-18 Joseph S. Myers <jsm28@cam.ac.uk> * c-common.c (check_format_info): Properly save the argument diff --git a/gcc/c-typeck.c b/gcc/c-typeck.c index da8ced2..9f2ec8d 100644 --- a/gcc/c-typeck.c +++ b/gcc/c-typeck.c @@ -6460,7 +6460,8 @@ process_init_element (value) } if (constructor_max_index != 0 - && tree_int_cst_lt (constructor_max_index, constructor_index)) + && (tree_int_cst_lt (constructor_max_index, constructor_index) + || integer_all_onesp (constructor_max_index))) { pedwarn_init ("excess elements in array initializer"); break; diff --git a/gcc/extend.texi b/gcc/extend.texi index 40e57b3..2c6b4d1 100644 --- a/gcc/extend.texi +++ b/gcc/extend.texi @@ -889,6 +889,10 @@ struct line @{ In standard C, you would have to give @code{contents} a length of 1, which means either you waste space or complicate the argument to @code{malloc}. +Static initialization of the zero-length array is not allowed. A +warning will be generated for each initializer attempting to initialize +the zero-length array. + @node Variable Length @section Arrays of Variable Length @cindex variable-length arrays |