ef5057c89e
I've been tracking down a bug in a Fortran program on a newlib target and it boils down to fallback_access doing something bad. The unconditional calls to close cause havoc when open doesn't get called due to the short-circuiting in the if-statement above because the fd is uninitialised. In my environment GCC ends up calling close on file descriptor 0, thus trying to close stdin. This patch tightens up the calling so that close is called only when the corresponding open call succeeded. With this my runtime failure disappears. Bootstrapped and tested on aarch64-none-linux-gnu. Though that doesn't exercise this call I hope it's an obviously correct change. * io/unix.c (fallback_access): Avoid calling close on uninitialized file descriptor. From-SVN: r264305 |
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This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.