This is the mail archive of the
gcc-patches@gcc.gnu.org
mailing list for the GCC project.
[committed] remove spurious assignment to avoid ICE (PR 92493)
- From: Martin Sebor <msebor at redhat dot com>
- To: gcc-patches <gcc-patches at gcc dot gnu dot org>
- Date: Mon, 18 Nov 2019 15:18:50 -0700
- Subject: [committed] remove spurious assignment to avoid ICE (PR 92493)
I checked in the attached change in r278423 to avoid the ICE
reported in the PR and introduced in a recent commit of mine.
The change was bootstrapped and regtested on x86_64-linux.
Martin
PR middle-end/92493 - ICE in get_origin_and_offset at gimple-ssa-sprintf.c
gcc/ChangeLog:
PR tree-optimization/92493
* gimple-ssa-sprintf.c (get_origin_and_offset): Remove spurious
assignment.
gcc/testsuite/ChangeLog:
PR tree-optimization/92493
* gcc.dg/pr92493.c: New test.
Index: gcc/gimple-ssa-sprintf.c
===================================================================
--- gcc/gimple-ssa-sprintf.c (revision 278418)
+++ gcc/gimple-ssa-sprintf.c (working copy)
@@ -2346,7 +2346,6 @@ get_origin_and_offset (tree x, HOST_WIDE_INT *fldo
{
*fldoff += index;
*off -= index;
- fldoff = NULL;
}
}
Index: gcc/testsuite/gcc.dg/pr92493.c
===================================================================
--- gcc/testsuite/gcc.dg/pr92493.c (nonexistent)
+++ gcc/testsuite/gcc.dg/pr92493.c (working copy)
@@ -0,0 +1,29 @@
+/* PR middle-end/92493 - ICE in get_origin_and_offset at gimple-ssa-sprintf.c
+ { dg-do compile }
+ { dg-options "-O3 -Wall" } */
+
+struct A
+{
+ int i;
+ char a[2];
+} *p;
+
+struct B
+{
+ short j;
+ struct A a;
+} b;
+
+void warn (int j)
+{
+ struct A *q = &b.a;
+ p = q + j;
+ __builtin_snprintf (p->a, 8, "%s", p->a); // { dg-warning "\\\[-Wrestrict" }
+}
+
+void nowarn (char *d, int j)
+{
+ struct A *q = &b.a;
+ p = q + j;
+ __builtin_snprintf (d, 8, "%s", p->a);
+}