On Nov 27 11:32, Jiří Engelthaler wrote: > Hi, > I have a problem with GCC 7.3.0 (problem is in all versions) and > precompiled headers. > I have the sample file http://ge.tt/7fRLk1t2 which causes Segmentation > fault in cc1. > The test passes normally on Linux. I searched why and found that the result > here > https://github.com/gcc-mirror/gcc/blob/gcc-7_3_0-release/gcc/ggc-common.c#L626 > is 1 in Linux and -1 in CygWin. > > In Linux the method called is > https://github.com/gcc-mirror/gcc/blob/gcc-7_3_0-release/gcc/config/host-linux.c#L182 > > In Cygwin the method called is > https://github.com/gcc-mirror/gcc/blob/gcc-7_3_0-release/gcc/ggc-common.c#L708 > - mmap return address is not equal to base address.
This version assumes that the kernel honors the START operand of mmap even without MAP_FIXED if START through START+SIZE are not currently mapped with something. Sigh. Corinna -- Corinna Vinschen Cygwin Maintainer
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