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Original bug report: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110956 Rainer Orth successfully tested the patch on Solaris with a full bootstrap. Some uncommon unwinding table encodings need to access the base pointer for address computations. We do not have that information in calls to __deregister_frame_info_bases, and previously simply used nullptr as base pointer. That is usually fine, but for some Solaris i386 shared libraries that results in wrong address computations. To fix this problem we now associate the unwinding object with the table pointer itself, which is always known, in addition to the PC range. When deregistering a frame, we first locate the object using the table pointer, and then use the base pointer stored within the object to compute the PC range. libgcc/ChangeLog: PR libgcc/110956 * unwind-dw2-fde.c: Associate object with address of unwinding table. |
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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.