RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler Command-line Options
Example
void foo(void)
{
long long i; /* okay in non-strict C90 */
}
Compiling this code with --strict generates an error.
See also
• --c90 on page 2-13
• --c99 on page 2-13
• --cpp on page 2-14
• --gnu on page 2-44
• --strict_warnings
• Source language modes on page 1-3 in the Compiler User Guide.
2.1.113 --strict_warnings
This option enforces strict C or strict C++, depending on the choice of source language
used.
The --strict_warnings option behaves similarly to --strict, except that the compiler
issues warning messages in place of error messages when nonstandard features are
used.
Errors
When --strict_warnings is in force and a violation of the relevant ISO standard occurs,
the compiler normally issues a warning message.
The severity of diagnostic messages can be controlled in the usual way.
Note
In some cases, the compiler issues an error message instead of a warning when it detects
something that is strictly illegal, and terminates the compilation. For example:
#ifdef $Super$
extern void $Super$$__aeabi_idiv0(void); /* intercept __aeabi_idiv0 */
#endif
Compiling this code with --strict_warnings generates an error.
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