------- Comment #1 from hjl dot tools at gmail dot com 2008-07-04 13:17 ------- Created an attachment (id=15852) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15852&action=view) A testcase with drap
[EMAIL PROTECTED] stack-10]$ /export/build/gnu/gcc-stack-internal/build-x86_64-linux/gcc/xgcc -B/export/build/gnu/gcc-stack-internal/build-x86_64-linux/gcc/ -m32 foo.c -g [EMAIL PROTECTED] stack-10]$ gdb a.out GNU gdb 6.8.50.20080605-cvs Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu"... (gdb) b foo Breakpoint 1 at 0x80483a8: file foo.c, line 7. (gdb) r Starting program: /export/home/hjl/bugs/gcc/stack-10/a.out Breakpoint 1, foo (dummy1=-5725018, dummy2=0, dummy3=-5724977, dummy4=-5724952, dummy5=-5724933, dummy6=-5724905, size=-5724890) at foo.c:7 7 { (gdb) next 8 volatile char * ptr=__builtin_alloca(size); (gdb) 11 xxx = 2; (gdb) 12 ptr [1]= 30; (gdb) 13 printf ("%d: %d\n", xxx, ptr [1]); (gdb) p xxx $1 = 0 (gdb) p ptr [1] $2 = 0 '\0' (gdb) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36728
