http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46902
Summary: [4.6 Regression] gcc.dg/plugin/plugindir*.c gives ICEs
on powerpc-apple-darwin9
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: domi...@lps.ens.fr
CC: d...@redhat.com, i...@airs.com, jos...@codesourcery.com,
ia...@gcc.gnu.org
Host: powerpc-apple-darwin9
Target: powerpc-apple-darwin9
Build: powerpc-apple-darwin9
Between revisions 166379 and 166752 on my logs the following failures in the
test suite appeared on powerpc-apple-darwin9 with both -m32 and -m64:
FAIL: gcc.dg/plugin/plugindir1.c (internal compiler error)
FAIL: gcc.dg/plugin/plugindir1.c (test for excess errors)
FAIL: gcc.dg/plugin/plugindir2.c (internal compiler error)
FAIL: gcc.dg/plugin/plugindir2.c (test for excess errors)
FAIL: gcc.dg/plugin/plugindir3.c (internal compiler error)
FAIL: gcc.dg/plugin/plugindir3.c (test for excess errors)
FAIL: gcc.dg/plugin/plugindir4.c (internal compiler error)
FAIL: gcc.dg/plugin/plugindir4.c (test for excess errors)
Reduced range from regress: revision 166543 works, revision 166589 fails, see:
http://gcc.gnu.org/ml/gcc-testresults/2010-11/msg00831.html
http://gcc.gnu.org/ml/gcc-testresults/2010-11/msg00875.html
Without better knowledge, revisions 166544, 166552, 16653, 166555, 166565, and
166570 could be candidates (no guarantee about an exhaustive list!-).
These failures are due to ICEs during the compilation
[karma] f90/bug% /opt/gcc/gcc4.6w/bin/gcc -c -fplugin=foo
/opt/gcc/gcc-4.6-work/gcc/testsuite/gcc.dg/plugin/plugindir1.c
[address=fffffffc pc=94afe928]
cc1: internal compiler error: Segmentation Fault
The backtrace is
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0xfffffffc
0x94afe928 in strlen ()
(gdb) bt
#0 0x94afe928 in strlen ()
#1 0x008b6414 in concat (first=0xffffffff <Address 0xffffffff out of bounds>)
at ../../gcc-4.6-work/libiberty/concat.c:76
#2 0x0051e660 in add_new_plugin (plugin_name=0xbfffdac2 "foo") at
../../gcc-4.6-work/gcc/plugin.c:157
#3 0x00515888 in handle_common_deferred_options () at
../../gcc-4.6-work/gcc/opts-global.c:385
#4 0x005e3844 in toplev_main (argc=3, argv=0xffffffff) at
../../gcc-4.6-work/gcc/toplev.c:1923
#5 0x00002560 in start ()
This PR seems different from pr43759.
