Details
Description
The test 0.printf.cpp exits with a SIGSEGV on FreeBSD due to what's most likely a bug in the __rw::__rw_memattr() function. This was a problem in stdcxx 4.2.0 and still is a problem on the head of trunk today. The stack trace is below:
$ LD_LIBRARY_PATH=../lib gdb ./0.printf
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(gdb) run
Starting program: /build/sebor/stdcxx-gcc-3.4.6-15d/tests/0.printf
warning: Unable to get location for thread creation breakpoint: generic error
[New LWP 100149]
"%": percent sign
"%c": character formatting
extension: "%{c}": escaped character
extension: "%{#c}": quoted escaped character
"%lc": wide character
extension: "%{lc}": escaped wide character
extension: "%{#lc}": quoted escaped wide character
"%s": character string
[New Thread 0x8093000 (LWP 100149)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x8093000 (LWP 100149)]
0x282b0340 in memchr () from /lib/libc.so.6
(gdb) where
#0 0x282b0340 in memchr () from /lib/libc.so.6
#1 0x2810b00a in __rw::__rw_memattr (addr=0x20, nbytes=4294967295, attr=-1)
at /.amd/albatross/san/devco/sebor/stdcxx/src/memattr.cpp:223
#2 0x080755ad in _rw_fmtstr (spec=@0xbfbfe5b0, buf=@0xbfbfeb10,
str=0x20 <Error reading address 0x20: Bad address>, len=4294967295)
at /.amd/albatross/san/devco/sebor/stdcxx/tests/src/printf.cpp:2331
#3 0x08071786 in _rw_vasnprintf_c99 (pspec=0xbfbfe5b0, paramno=0,
buf=@0xbfbfeb10, pva=0xbfbfeaf8)
at /.amd/albatross/san/devco/sebor/stdcxx/tests/src/printf.cpp:594
#4 0x0807232e in _rw_pvasnprintf (buf=@0xbfbfeb10, fmt=0x807e2ac "%s",
pva=0xbfbfeaf8)
at /.amd/albatross/san/devco/sebor/stdcxx/tests/src/printf.cpp:898
#5 0x080726e7 in rw_vasnprintf (pbuf=0xbfbfeb64, pbufsize=0xbfbfeb60,
fmt=0x807e2ac "%s", varg=0xbfbfeb74 " ")
at /.amd/albatross/san/devco/sebor/stdcxx/tests/src/printf.cpp:1011
#6 0x08078025 in rw_sprintfa (fmt=0x807e2ac "%s")
at /.amd/albatross/san/devco/sebor/stdcxx/tests/src/printf.cpp:3272
#7 0x0804d97e in test_string ()
at /.amd/albatross/san/devco/sebor/stdcxx/tests/self/0.printf.cpp:419
#8 0x0807061f in main ()
at /.amd/albatross/san/devco/sebor/stdcxx/tests/self/0.printf.cpp:3287
Attachments
Issue Links
- is related to
-
STDCXX-931 [gcc/Darwin] 0.printf test aborts with bus error
-
- Open
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