RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler Command-line Options
Note
For this reason, linker feedback is a safe optimization, but there might be a small
impact on code size.
• You have to do a full compile and link at least twice to get the maximum benefit
from linker feedback. However, a single compile and link using feedback from a
previous build is usually sufficient.
See also
• --split_sections on page 2-83
• Using linker feedback on page 2-25 in the Compiler User Guide.
2.1.51 --[no_]force_new_nothrow
This option controls the behavior of new expressions in C++.
The C++ standard states that only a no throw operator new, one that is declared with
throw, is permitted to return NULL on failure. Any other operator new is never permitted
to return NULL and the default operator new throws an exception on failure.
If you use --force_new_nothrow, the compiler treats expressions such as new
T(...args...), that use the global ::operator new or ::operator new[], as if they are new
(std::nothrow) T(...args...).
--force_new_nothrow also causes any class-specific operator new or any overloaded
global operator new to be treated as no throw.
Note
The option --force_new_nothrow is provided only as a migration aid for legacy source
code that does not conform to the C++ standard. Its use is not recommended.
Mode
This option is effective only if the source language is C++.
Default
The default is --no_force_new_nothrow.
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