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| author | Jakub Jelinek <jakub@redhat.com> | 2020-03-28 10:30:31 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2020-03-28 10:30:31 +0100 |
| commit | c6a562de88c44a555e1688c212869b20b02151bc (patch) | |
| tree | 06652afc717200815146316b1636c0c737c37422 /gcc/c/c-decl.c | |
| parent | 679becf175c5d7f6b323cd3af0a09c6039b4123d (diff) | |
| download | gcc-c6a562de88c44a555e1688c212869b20b02151bc.zip gcc-c6a562de88c44a555e1688c212869b20b02151bc.tar.gz gcc-c6a562de88c44a555e1688c212869b20b02151bc.tar.bz2 | |
c: After issuing errors about array size, for error-recovery don't make the array VLA [PR93573]
After we report various errors about array size, we set for error-recovery
the size to be 1, but because size_int_const is false, it still means we
pretend the array is a VLA, can emit a second diagnostics in that case etc.
E.g.
$ ./cc1.unpatched -quiet a.c
a.c:1:5: error: size of array ‘f’ has non-integer type
1 | int f[100.0];
| ^
a.c:1:1: warning: variably modified ‘f’ at file scope
1 | int f[100.0];
| ^~~
$ ./cc1 -quiet a.c
a.c:1:5: error: size of array ‘f’ has non-integer type
1 | int f[100.0];
| ^
2020-03-28 Jakub Jelinek <jakub@redhat.com>
PR c/93573
* c-decl.c (grokdeclarator): After issuing errors, set size_int_const
to true after setting size to integer_one_node.
* gcc.dg/pr93573-1.c: New test.
* gcc.dg/pr93573-2.c: New test.
Diffstat (limited to 'gcc/c/c-decl.c')
| -rw-r--r-- | gcc/c/c-decl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/c/c-decl.c b/gcc/c/c-decl.c index 80fe318..b31d99f 100644 --- a/gcc/c/c-decl.c +++ b/gcc/c/c-decl.c @@ -6416,6 +6416,7 @@ grokdeclarator (const struct c_declarator *declarator, error_at (loc, "size of unnamed array has non-integer type"); size = integer_one_node; + size_int_const = true; } /* This can happen with enum forward declaration. */ else if (!COMPLETE_TYPE_P (TREE_TYPE (size))) @@ -6427,6 +6428,7 @@ grokdeclarator (const struct c_declarator *declarator, error_at (loc, "size of unnamed array has incomplete " "type"); size = integer_one_node; + size_int_const = true; } size = c_fully_fold (size, false, &size_maybe_const); @@ -6451,6 +6453,7 @@ grokdeclarator (const struct c_declarator *declarator, else error_at (loc, "size of unnamed array is negative"); size = integer_one_node; + size_int_const = true; } /* Handle a size folded to an integer constant but not an integer constant expression. */ |