Hi,
I worked at narrowing down the segfault problem I am getting with both
GNU Make 3.82 and 3.82.90. This is the smallest makefile I came up with:
.SECONDEXPANSION:
gen_default_Test_f := \
file1 \
file2
gen_default_Test_bar := bar_foo
gen_%.f: $${gen_$$*_f}
@echo "f $@"
gen_%: \
$$(if $$(gen_$$*_f),gen_%.f) \
$$(if $$(gen_$$*_bar),$$(gen_$$*_bar).ext)
@echo "$@"
The backtrace in gdb with version 3.82 is:
Program received signal SIGABRT, Aborted.
0xffffe410 in __kernel_vsyscall ()
(gdb) bt
#0 0xffffe410 in __kernel_vsyscall ()
#1 0x00949df0 in raise () from /lib/libc.so.6
#2 0x0094b701 in abort () from /lib/libc.so.6
#3 0x0098228b in __libc_message () from /lib/libc.so.6
#4 0x0098a5a5 in _int_free () from /lib/libc.so.6
#5 0x0098a9e9 in free () from /lib/libc.so.6
#6 0x08052a36 in pattern_search (file=0x807c518, archive=10891252,
depth=1, recursions=0) at implicit.c:976
#7 0x08053f63 in try_implicit_rule (file=0x807c518, depth=1) at
implicit.c:47
#8 0x0806117b in update_file (file=0x807c518, depth=0) at remake.c:493
#9 0x08061b54 in update_goal_chain (goals=0x807e548) at remake.c:157
#10 0x0805979c in main (argc=8, argv=0xffffd164, envp=0xffffd188) at
main.c:2282
I compiled GNU Make with both 32-bit and 64-bit compile on RedHat 5.5
and they both have this problem. In 3.81, there is no segfault.
Could anyone shed light on this? I am a big fan of conditional
prerequisites done with SECONDEXPANSION. I hope they will still work.
Thanks,
Martin
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