Dear Harald, dear all,
On 10.03.21 22:26, Harald Anlauf wrote:
[...] I found another testcase which lead to trouble during error
recovery due to a NULL pointer dereference.
I was a bit surprised that the crash only occurs in trans*.c;
however, the error 'non-constant initialization expression'
is only issued by gfc_conv_constant, called via gfc_get_symbol_decl.
Thus, when the error is shown we are already deep in trans*.c land.
Here's the updated changelog for the updated
patch (attached). I also renamed the first testcase so that they
fit better to the existing scheme.
Again regtested on x86_64-pc-linux-gnu. Now OK for mainline / 10?
LGTM for mainline and after a bit of waiting for GCC10.
Thanks,
Tobias
PR fortran/99205 - Out of memory with undefined character length
A character variable appearing as a data statement object cannot
be automatic, thus it shall have constant length.
gcc/fortran/ChangeLog:
PR fortran/99205
* data.c (gfc_assign_data_value): Reject non-constant character
length for lvalue.
* trans-array.c (gfc_conv_array_initializer): Restrict loop to
elements which are defined to avoid NULL pointer dereference.
gcc/testsuite/ChangeLog:
PR fortran/99205
* gfortran.dg/data_char_4.f90: New test.
* gfortran.dg/data_char_5.f90: New test.
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