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new-op.c: Add comment about -fsanitize=address 

gdb/ChangeLog:
2016-10-25  Pedro Alves  <palves@redhat.com>

	* common/new-op.c: Add comment about -fsanitize=address.
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Pedro Alves 2016-10-25 13:32:26 +01:00
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@ -1,3 +1,7 @@
2016-10-25 Pedro Alves <palves@redhat.com>
* common/new-op.c: Add comment about -fsanitize=address.
2016-10-25 Pedro Alves <palves@redhat.com>
* common/common-defs.h (__STDC_CONSTANT_MACROS)

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@ -33,6 +33,12 @@
new-handler function instead (std::set_new_handler) because we want
to catch allocation errors from within global constructors too.
Skip overriding if building with -fsanitize=address though.
Address sanitizer wants to override operator new/delete too in
order to detect malloc+delete and new+free mismatches. Our
versions would mask out ASan's, with the result of losing that
useful mismatch detection.
Note that C++ implementations could either have their throw
versions call the nothrow versions (libstdc++), or the other way
around (clang/libc++). For that reason, we replace both throw and