This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug c/13691] malloc returns eroneous pointer
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 15 Jan 2004 00:17:02 -0000
- Subject: [Bug c/13691] malloc returns eroneous pointer
- References: <20040114235551.13691.janbor@fys.uio.no>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-01-15 00:17 -------
You cannot do this:
A = (double **)malloc(16000*sizeof(double *));
B = (double **)malloc(32000*sizeof(double *));
A[3] = 1.234; // works fine
B[3] = 1.234; // gives p0_23074: p4_error: interrupt SIGSEGV: 11
That will not compile anyways. But if you change it to:
A[3][3] = 1.234;
this will compile but it will not work as you have not allocated what A[3] points to, go read a book
about C memory and pointers, no I do not know of one.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13691