1DLERROR(3) Linux Programmer's Manual DLERROR(3)
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6 dlerror - obtain error diagnostic for functions in the dlopen API
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9 #include <dlfcn.h>
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11 char *dlerror(void);
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13 Link with -ldl.
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16 The dlerror() function returns a human-readable, null-terminated string
17 describing the most recent error that occurred from a call to one of
18 the functions in the dlopen API since the last call to dlerror(). The
19 returned string does not include a trailing newline.
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21 dlerror() returns NULL if no errors have occurred since initialization
22 or since it was last called.
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25 dlerror() is present in glibc 2.0 and later.
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28 For an explanation of the terms used in this section, see at‐
29 tributes(7).
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31 ┌────────────────────────────────────────────┬───────────────┬─────────┐
32 │Interface │ Attribute │ Value │
33 ├────────────────────────────────────────────┼───────────────┼─────────┤
34 │dlerror() │ Thread safety │ MT-Safe │
35 └────────────────────────────────────────────┴───────────────┴─────────┘
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38 POSIX.1-2001.
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41 The message returned by dlerror() may reside in a statically allocated
42 buffer that is overwritten by subsequent dlerror() calls.
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44 History
45 This function is part of the dlopen API, derived from SunOS.
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48 See dlopen(3).
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51 dladdr(3), dlinfo(3), dlopen(3), dlsym(3)
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54 This page is part of release 5.13 of the Linux man-pages project. A
55 description of the project, information about reporting bugs, and the
56 latest version of this page, can be found at
57 https://www.kernel.org/doc/man-pages/.
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61Linux 2021-03-22 DLERROR(3)