On Linux/x86_64,

a2bd06e89526a69925157d0cbecb521fb2a360e0 is the first bad commit
commit a2bd06e89526a69925157d0cbecb521fb2a360e0
Author: David Malcolm <[email protected]>
Date:   Wed May 6 09:57:07 2026 -0400

    analyzer: generating raw state for rewinding data flow

caused

FAIL: gcc.dg/analyzer/divide-by-zero-6.c  at line 15 (test for warnings, line 
14)
FAIL: gcc.dg/analyzer/divide-by-zero-6.c (test for excess errors)
FAIL: gcc.dg/analyzer/divide-by-zero-6.c  (test for warnings, line 14)

with GCC configured with

../../gcc/configure 
--prefix=/export/users3/haochenj/src/gcc-bisect/master/master/r17-360/usr 
--enable-clocale=gnu --with-system-zlib --with-demangler-in-ld 
--with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet --without-isl 
--enable-libmpx x86_64-linux --disable-bootstrap

To reproduce:

$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="analyzer.exp=gcc.dg/analyzer/divide-by-zero-6.c 
--target_board='unix{-m32}'"
$ cd {build_dir}/gcc && make check 
RUNTESTFLAGS="analyzer.exp=gcc.dg/analyzer/divide-by-zero-6.c 
--target_board='unix{-m32\ -march=cascadelake}'"

(Please directly reply to this email for question about this report.)
(If you met problems with cascadelake related, disabling AVX512F in command 
line might save that.)
(However, please make sure that there is no potential problems with AVX512.)

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