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The argument to an integer constant macro:
See also Use of <stdint.h> Small Integer Constant Macro.
| Class Name | Inappropriate Argument to Integer Constant Macro | ||||||
|---|---|---|---|---|---|---|---|
| Significance | reliability | ||||||
| Mnemonic | LANG.PREPROC.ICONST | ||||||
| Categories |
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| Availability | Available for C and C++. |
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| Enabling | Checks for this warning class are
disabled by default. To enable them, add the following WARNING_FILTER
rule to the project configuration file.
WARNING_FILTER += allow class="Inappropriate Argument to Integer Constant Macro" |
#include <stdint.h> uint32_t g1 = UINT32_C(1); /* ok */ uint32_t g2 = UINT32_C(-1); /* 'Inappropriate Argument to Integer Constant Macro' warning issued here * - macro name UNIT32_C indicates a 32-bit unsigned integer * - argument -1 is not representable as a 32-bit unsigned integer */ uint32_t g3 = UINT32_C(1u); /* 'Inappropriate Argument to Integer Constant Macro' warning issued here * - argument 1u has a literal suffix */ uint32_t g4 = UINT32_C(1.0); /* 'Inappropriate Argument to Integer Constant Macro' warning issued here * - argument is not an integer */ uint32_t g5 = UINT32_C(g1); /* 'Inappropriate Argument to Integer Constant Macro' warning issued here * - argument is not a literal */
The following configuration file parameters affect checks for this warning class.
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