43 rader
1.6 KiB
Diff
43 rader
1.6 KiB
Diff
|
Avoid GCC 4.6 segfaults
|
|||
|
|
|
|||
|
|
Buildroot's attempt to build a GCC 4.6.x cross-compilation toolchain might fail
|
|||
|
|
with something like
|
|||
|
|
|
|||
|
|
/some/path/buildroot-2013.02/output/toolchain/gcc-4.6.3/libgcc/../gcc/libgcc2.c: In function ‘__negdi2’:
|
|||
|
|
/some/path/buildroot-2013.02/output/toolchain/gcc-4.6.3/libgcc/../gcc/libgcc2.c:72:1: internal compiler error: Segmentation fault
|
|||
|
|
|
|||
|
|
This patch is revision 191605 for GCC 4.7.x
|
|||
|
|
(<https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=191605>). Applying it
|
|||
|
|
to 4.6.x seems to prevent this crash.
|
|||
|
|
|
|||
|
|
Save this file as
|
|||
|
|
buildroot-2013.02/toolchain/gcc/4.6.3/999-ira-int.patch
|
|||
|
|
to have buildroot apply this patch to GCC 4.6.x source before trying to build
|
|||
|
|
it.
|
|||
|
|
|
|||
|
|
See also <https://gcc.gnu.org/ml/gcc-help/2014-03/msg00049.html>
|
|||
|
|
|
|||
|
|
Index: buildroot-2013.02/toolchain/gcc/4.6.3/999-ira-int.patch
|
|||
|
|
===================================================================
|
|||
|
|
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
|||
|
|
+++ buildroot-2013.02/toolchain/gcc/4.6.3/999-ira-int.patch 2015-03-29 00:09:28.000000000 -0400
|
|||
|
|
@@ -0,0 +1,18 @@
|
|||
|
|
+--- gcc-4_7-branch/gcc/ira-int.h 2012/09/21 09:19:39 191604
|
|||
|
|
++++ gcc-4_7-branch/gcc/ira-int.h 2012/09/21 10:08:35 191605
|
|||
|
|
+@@ -1138,8 +1138,13 @@
|
|||
|
|
+ ira_allocno_object_iter_cond (ira_allocno_object_iterator *i, ira_allocno_t a,
|
|||
|
|
+ ira_object_t *o)
|
|||
|
|
+ {
|
|||
|
|
+- *o = ALLOCNO_OBJECT (a, i->n);
|
|||
|
|
+- return i->n++ < ALLOCNO_NUM_OBJECTS (a);
|
|||
|
|
++ int n = i->n++;
|
|||
|
|
++ if (n < ALLOCNO_NUM_OBJECTS (a))
|
|||
|
|
++ {
|
|||
|
|
++ *o = ALLOCNO_OBJECT (a, n);
|
|||
|
|
++ return true;
|
|||
|
|
++ }
|
|||
|
|
++ return false;
|
|||
|
|
+ }
|
|||
|
|
+
|
|||
|
|
+ /* Loop over all objects associated with allocno A. In each
|