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| author | Manuel López-Ibáñez <manu@gcc.gnu.org> | 2008-08-27 23:54:36 +0000 |
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| committer | Manuel López-Ibáñez <manu@gcc.gnu.org> | 2008-08-27 23:54:36 +0000 |
| commit | e9527cfd9665e3cb0887682ccb0d17d040732799 (patch) | |
| tree | a771c38af9403eafeab5a23860be3f703a4512d1 /gcc/c-decl.c | |
| parent | 4ccd12e5aae640a352129fd387657da8e4d0f95b (diff) | |
| download | gcc-e9527cfd9665e3cb0887682ccb0d17d040732799.zip gcc-e9527cfd9665e3cb0887682ccb0d17d040732799.tar.gz gcc-e9527cfd9665e3cb0887682ccb0d17d040732799.tar.bz2 | |
re PR c/31673 ("`for' loop initial declaration used outside C99 mode" is confusing)
2008-08-27 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
PR c/31673
* c-decl.c (check_for_loop_decls): Improve error message. Give
hint.
testsuite/
* gcc.dg/c90-fordecl-1.c: Update.
From-SVN: r139681
Diffstat (limited to 'gcc/c-decl.c')
| -rw-r--r-- | gcc/c-decl.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/c-decl.c b/gcc/c-decl.c index 056cb38..ee04d9a 100644 --- a/gcc/c-decl.c +++ b/gcc/c-decl.c @@ -6796,13 +6796,19 @@ check_for_loop_decls (void) tree one_decl = NULL_TREE; int n_decls = 0; - if (!flag_isoc99) { + static bool hint = true; /* If we get here, declarations have been used in a for loop without the C99 for loop scope. This doesn't make much sense, so don't allow it. */ - error ("%<for%> loop initial declaration used outside C99 mode"); + error ("%<for%> loop initial declarations are only allowed in C99 mode"); + if (hint) + { + inform (input_location, + "use option -std=c99 or -std=gnu99 to compile your code"); + hint = false; + } return NULL_TREE; } /* C99 subclause 6.8.5 paragraph 3: |