https://llvm.org/bugs/show_bug.cgi?id=25983
Bug ID: 25983
Summary: DEBUG output in InstructionCombining.cpp causing seg
fault
Product: new-bugs
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Keywords: compile-fail
Severity: normal
Priority: P
Component: new bugs
Assignee: unassignedb...@nondot.org
Reporter: pauls...@linux.vnet.ibm.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Created attachment 15539
--> https://llvm.org/bugs/attachment.cgi?id=15539&action=edit
clang input
InstructionCombining is outputting a new instruction to dbgs(), without the new
instruction having been insterted into BB. The result is that an AssemblyWriter
is created with a null TheModule pointer.
A seg fault is caused by the supplied test case.
run:
clang -cc1 -triple s390x-ibm-linux-gnu -S -disable-free -main-file-name
ckd_alloc.c -mrelocation-model static -mthread-model posix -fmath-errno
-masm-verbose -mconstructor-aliases -fuse-init-array -target-cpu z13
-target-linker-version 2.25 -momit-leaf-frame-pointer -dwarf-column-info
-debugger-tuning=gdb -O3 -ferror-limit 19 -fmessage-length 0 -funroll-loops
-fobjc-runtime=gcc -fdiagnostics-show-option -vectorize-loops -vectorize-slp
-mllvm -debug -o ckd_alloc.s -x ir ckd_alloc.bc
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