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Compiler Command-line Options
Usage
--strict enforces compliance with:
ISO C90 • ISO/IEC 9899:1990, the 1990 International Standard for C.
• ISO/IEC 9899 AM1, the 1995 Normative Addendum 1.
ISO C99 ISO/IEC 9899:1999, the 1999 International Standard for C.
ISO C++
ISO/IEC 14822:2003, the 2003 International Standard for C++.
Errors
When --strict is in force and a violation of the relevant ISO standard occurs, the
compiler issues an error message.
The severity of diagnostic messages can be controlled in the usual way.
Example
void foo(void)
{
long long i; /* okay in nonstrict C90 */
}
Compiling this code with --strict generates an error.
See also
• --c90 on page 2-22
• --c99 on page 2-22
• --cpp on page 2-30
• --gnu on page 2-67
• --strict_warnings
• Dollar signs in identifiers on page 3-13
• Source language modes on page 1-4 in the Compiler User Guide.
2.1.153 --strict_warnings
Diagnostics that are errors in --strict mode are downgraded to warnings, where
possible. It is sometimes not possible for the compiler to downgrade a strict error, for
example, where it cannot construct a legitimate program to recover.
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