URL:
<http://savannah.gnu.org/bugs/?54549>
Summary: Segfault caused by makefile in make version 4.2.1
Project: make
Submitted by: None
Submitted on: Tue 21 Aug 2018 10:19:50 PM UTC
Severity: 3 - Normal
Item Group: Bug
Status: None
Privacy: Public
Assigned to: None
Open/Closed: Open
Discussion Lock: Any
Component Version: 4.2.1
Operating System: None
Fixed Release: None
Triage Status: None
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Details:
The following makefile causes a segfault in version 4.2.1
it doesnt seem reproducible in 4.1, havent tried for any other versions.
foo: -lcat
# Removing second expansion prevents segfault
.SECONDEXPANSION:
foo: $$@.o;
# Having an empty command here prevents segfault unless,
# the environment is empty. `env -i make foo`
# MFLAGS=-w or MAKEFLAGS=-w `env MFLAGS=-w make foo`
# libcat.a target calls an extra command, `@true \n @touch $@`
# odd.
%.o:
@true
# Having an empty command prevents segfault.
-l%: lib%.a
@true
# Not creating libcat.a here prevents segfault,
libcat.a:
@touch $@
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