https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67236
Bug ID: 67236
Summary: Wrong Message of -Wvla for Standard ISO C90 However
Emitted with -std=c11
Product: gcc
Version: 6.0
Status: RESOLVED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: chengniansun at gmail dot com
CC: mpolacek at gcc dot gnu.org
Target Milestone: ---
Status: RESOLVED
CC: mpolacek at gcc dot gnu.org
Resolution: DUPLICATE
When I compile the code "int array[4.3];", in addition to the error, GCC also
emits a -Wvla warning saying that ISO C90 forbids this. However, I specify
-std=c11 in the command line, and IMHO this is at least an inconsistency
between errors and error messages.
$: cat t.c
int array[4.3];
$: gcc-trunk -c -Wvla -std=c11 -pedantic t.c
t.c:1:5: error: size of array ‘array’ has non-integer type
int array[4.3];
^
t.c:1:1: warning: variably modified ‘array’ at file scope
int array[4.3];
^
t.c:1:1: warning: ISO C90 forbids array ‘array’ whose size can’t be evaluated
[-Wvla]
$: gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/usr/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure
--enable-languages=c,c++,objc,obj-c++,fortran,lto --disable-werror
--with-gmp=/usr/local/gcc-trunk --with-mpfr=/usr/local/gcc-trunk
--with-mpc=/usr/local/gcc-trunk --with-cloog=/usr/local/gcc-trunk
--prefix=/usr/local/gcc-trunk
Thread model: posix
gcc version 6.0.0 20150815 (experimental) [trunk revision 226911] (GCC)
$:
--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
.
*** This bug has been marked as a duplicate of bug 67243 ***
