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8.49. gcc

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Updated gcc packages that fix several bugs and add one enhancement are now available for Red Hat Enterprise Linux 6.
The gcc packages provide compilers for C, C++, Java, Fortran, Objective C, and Ada 95 GNU, as well as related support libraries.

Bug Fixes

BZ#906234
Due to the small local buffer for read tokens, GCC (GNU Compiler Collection) could trigger stack smashing protector when reading digraphs in a program. The buffer has been enlarged, and thus the digraph tokens can be read without harming the memory.
BZ#921758
Previously, GCC could terminate unexpectedly when compiling C++ code that contained a structure with the "va_list" member field. The initialization of such a structure has been fixed, and GCC no longer crashes on such code.
BZ#959564
Prior to this update, the libgcc utility could terminate unexpectedly when unwinding the stack for a function annotated with "__attribute__((ms_abi))". This bug has been fixed by ignoring unwind data for unknown column numbers and libgcc no longer crashes.
BZ#967003
Previously, GCC could terminate unexpectedly when processing debug statements. This bug has been fixed by removing the value bound to the variable in such debug statements, and GCC no longer crashes in the described scenario.

Enhancement

BZ#908025
GCC now supports strings with curly braces and vertical bar inside inline assembler code. That is, '{', '}', and '|' can now be prefixed with the '%' sign; in that case they are not handled as dialect delimiters, but are passed directly to the assembler instead.
Users of gcc are advised to upgrade to these updated packages, which fix these bugs and add this enhancement.
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