https://llvm.org/bugs/show_bug.cgi?id=23078
Bug ID: 23078
Summary: fstream doesn't play well with named pipes
Product: libc++
Version: 3.5
Hardware: Macintosh
OS: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
Given a pipe created at the command line using 'mkfifo my_pipe' and given the
following snippet:
#include <fstream>
#include <iostream>
#include <string>
int main(int, char*[])
{
std::fstream pipe("my_pipe");
std::string message;
while(std::getline(pipe, message) && message != "EXIT")
{
std::cout << message << std::endl
}
return 0;
}
If I run the program and (from another command prompt) issue the command "echo
banana > my_pipe", nothing gets printed as it appears the call to getline never
returns. The same snippet and scenario with libstdc++ 4.7.2 works as expected.
That is getline returns, cout prints the message and we loop until message is
"EXIT".
MacOS X 10.10.2
clang -v:
Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
Target: x86_64-apple-darwin14.1.0
Thread model: posix
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