[Bug c/20613] New: __attribute__((malloc)) causes segfault in GCC 3.4

lkosewsk at uwaterloo dot ca gcc-bugzilla@gcc.gnu.org
Thu Mar 24 02:55:00 GMT 2005

I have a very simple program here, namely:
#include <malloc.h>

void __attribute__((malloc)) intersect(int list)
    int* shite = (int *)malloc(sizeof(int));

int main()

Attempting to compile this using GCC 3.4 with `gcc bug.c` causes a segmentation

Output of `gcc -v --save-temps bug.c`:
Reading specs from /usr/lib/gcc/i486-linux/3.4.4/specs
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f77,pascal,objc,ada,treelang --prefix=/usr
--libexecdir=/usr/lib --with-gxx-include-dir=/usr/include/c++/3.4
--enable-shared --with-system-zlib --enable-nls --without-included-gettext
--program-suffix=-3.4 --enable-__cxa_atexit --enable-libstdcxx-allocator=mt
--enable-clocale=gnu --enable-libstdcxx-debug --enable-java-gc=boehm
--enable-java-awt=gtk --disable-werror i486-linux
Thread model: posix
gcc version 3.4.4 20050209 (prerelease) (Debian 3.4.3-9ubuntu3)
 /usr/lib/gcc/i486-linux/3.4.4/cc1 -E -quiet -v bug.c -mtune=i486 -o bug.i
ignoring nonexistent directory
#include "..." search starts here:
#include <...> search starts here:
End of search list.
 /usr/lib/gcc/i486-linux/3.4.4/cc1 -fpreprocessed bug.i -quiet -dumpbase bug.c
-mtune=i486 -auxbase bug -version -o bug.s
GNU C version 3.4.4 20050209 (prerelease) (Debian 3.4.3-9ubuntu3) (i486-linux)
	compiled by GNU C version 3.4.4 20050209 (prerelease) (Debian 3.4.3-9ubuntu3).
GGC heuristics: --param ggc-min-expand=64 --param ggc-min-heapsize=64543
bug.c: In function `main':
bug.c:10: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-3.4/README.Bugs>.

This interface for bug submissions is horrible (no offense).  If I can figure
out how to attach files to this bug, I will attach the .i file.

           Summary: __attribute__((malloc)) causes segfault in GCC 3.4
           Product: gcc
           Version: 3.4.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: lkosewsk at uwaterloo dot ca
                CC: gcc-bugs at gcc dot gnu dot org


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