On 7/20/2013 3:30 PM, Daniel Brown wrote:
Hi,So I have some code I am trying to port to Cygwin but I am getting the error: fatal error in forked process - failed to create new win32 semaphore, Win32 error 87 when calling fork() in a C program when openmp code has been used beforehand. I've got the following test code which reduces the problem down to as little code as I could: #include <stdio.h> #include <omp.h> #include <sys/types.h> int main(void) { pid_t childPID; #pragma omp parallel { printf("I'm an openmp thread...\n"); } childPID =3D fork(); if(childPID >=3D 0) { if(childPID =3D=3D 0) { printf("Child fork\n"); } else { printf("Parent fork\n"); } } else { printf("Fork failed"); return 1; } return 0; } To build I just use "gcc -fopenmp para.c" and the output I get is... I'm an openmp thread... I'm an openmp thread... I'm an openmp thread... I'm an openmp thread... Parent fork 0 [main] a 18640 D:\usr\code\c\a.exe: *** fatal error in forked process - failed to create new win32 semaphore, Win32 error 87 I have tried doing a rebaseall as I had similar error in the past but it didn't fix it. I have also tried a clean install on a separate Windows 2008 R2 machine which didn't work either. The version of GCC is 4.7.3 and I am on Windows 8 Professional 64-bit, Cygwin 1.7.20(0.266/5/3).
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