I tried this on Ubuntu 14.04 with address sanitizer enabled and it did not find
any problems. You might try putting log_trace/log_debug statements in the
string functions to trace the flow. Alternately, you can use gdb to set
breakpoints and step through the code until it crashes. Could be a library
difference or locale/Unicode settings for the OS.
Steve
From: Raphael Fuchs [mailto:[email protected]]
Sent: Friday, February 6, 2015 3:11 AM
To: Steve Gieseking
Cc: [email protected]
Subject: Re: [Tntnet-general] cxxtools: base64-test, binaryTest()
Hi Steve,
I am searching for a simmilar issue, where the following main crashes when
compiled with Solaris Studio, but not with GCC or clang:
int main(int, char**)
{
cxxtools::String s;
s = "lorem ipsum dolur 1234567890 1234567890 1234567890 1234567890";
return 0;
}
The version I am debugging, is very much stripped down, with only char and
string included, and the short string functionality removed from the string:
src/main.cpp
src/char.cpp
src/string.cpp
I am clueless on where the issues could come from since I could not get leads
from valgrind. I will try to check this with address-sanitizer as well. Do you
have any Ideas how this happens?
Cheers
Raphael
PS: this is the repo with the stripped down version
https://bitbucket.org/Farmion/cxxtools-suncc
2015-02-05 20:57 GMT+01:00 Steve Gieseking <[email protected]
<mailto:[email protected]> >:
In base64-test.cpp binaryTest() function, the first data.assign has a string
with 13 values but requests a copy of 16 values. In
http://www.cplusplus.com/reference/string/string/assign/ this is indicated at
the bottom of the page as having undefined behavior. This was flagged in a
compilation with Address Sanitizer in Linux as having a global buffer overrun
in libstdc++.
Steve
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