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| CodeSonar® 9.0p0 Hot Tips | CONFIDENTIAL | CodeSecure Inc |
An identifier with external linkage is identical to one or more other identifiers.
See Identifier Classes for related warning classes.
| Class Name | Non-unique Identifiers: External Name | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Significance | style | |||||||||||||||
| Mnemonic | LANG.ID.NU.EXT | |||||||||||||||
| 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="Non-unique Identifiers: External Name" |
Suppose fileA.c and fileB.c are both in the analyzed software (but not necessarily in the same compilation unit).
Japanese (ja)
/* LANG.ID.NU.EXT.a.c */
#define externA 1
typedef int externB;
static void externC(void);
/* LANG.ID.NU.EXT.b.c */ extern int externA; /* 'Non-unique Identifiers: External Name' warning issued here */ extern int externB; /* 'Non-unique Identifiers: External Name' warning issued here */ extern int externC; /* 'Non-unique Identifiers: External Name' warning issued here */
The following configuration file parameters affect checks for this warning class.