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AN3350 Datasheet(PDF) 144 Page - STMicroelectronics |
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AN3350 Datasheet(HTML) 144 Page - STMicroelectronics |
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144 / 185 page  Pragmas for diagnostic messages AN3350 144/185 Doc ID 018512 Rev 2 Syntax #pragma warn_any_ptr_int_conv on | off | reset Remarks This pragma is useful to identify potential 64-bit pointer portability issues. An example is shown in Example 89. Example 89 Example of warn_any_ptr_int_conv #pragma warn_ptr_int_conv on short i, *ip void func() { i = (short)ip; /* WARNING: short type is not large enough to hold pointer. */ } #pragma warn_any_ptr_int_conv on void bar() { i = (int)ip; /* WARNING: pointer to integral conversion. */ ip = (short *)i; /* WARNING: integral to pointer conversion. */ } Remarks By default, this pragma is off. 19.12 warn_emptydecl Controls the recognition of declarations without variables. Syntax #pragma warn_emptydecl on | off | reset Remarks If you enable this pragma, the compiler displays a warning message when it encounters a declaration with no variables. Example 90 Examples of empty declarations in C and C++ #pragma warn_emptydecl on int ; /* WARNING: empty variable declaration. */ int i; /* OK */ long j;; /* WARNING */ long j; /* OK */ |
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