[Bug bootstrap/86621] [9 regression] 'alloca' bound is unknown in tree-vect-slp.c:1437:16

[ro at CeBiTec dot Uni-Bielefeld.DE]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86621

--- Comment #11 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
> r262923 adds the missing logic to prevent the "unknown bound" kind of warning
> unless -Walloca-larger-than has been explicitly specified.  i386 bootstrap
> should be restored (passes for me)., as should (hopefully) all other ILP32
> targets.

The patch does indeed fix i386-pc-solaris2.11 and sparc-sun-solaris2.11
bootstrap.  Thanks for that!

Please post it to gcc-patches, though: all patches are supposed to go
there for reference.

However, the new patch introduced a couple of testsuite regressions:

+FAIL: g++.dg/Walloca1.C  -std=gnu++11  (test for warnings, line 7)
+FAIL: g++.dg/Walloca1.C  -std=gnu++14  (test for warnings, line 7)
+FAIL: g++.dg/Walloca1.C  -std=gnu++98  (test for warnings, line 7)

+FAIL: gcc.dg/Wvla-larger-than-3.c  (test for warnings, line 66)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 403)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 404)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 406)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 407)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 408)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 409)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 410)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 413)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 414)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 416)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 438)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 449)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 453)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 454)
+FAIL: gcc.dg/attr-alloc_size-3.c  (test for warnings, line 455)
+FAIL: gcc.dg/attr-alloc_size-3.c (test for excess errors)
+FAIL: gcc.dg/attr-alloc_size-3.c argument 2 (test for warnings, line 410)
+FAIL: gcc.dg/attr-alloc_size-3.c argument 2 (test for warnings, line 455)
+FAIL: gcc.dg/pr42611.c  (test for warnings, line 17)