SymFromAddr function

Retrieves symbol information for the specified address.

Syntax


BOOL WINAPI SymFromAddr(
  _In_      HANDLE       hProcess,
  _In_      DWORD64      Address,
  _Out_opt_ PDWORD64     Displacement,
  _Inout_   PSYMBOL_INFO Symbol
);

Parameters

hProcess [in]

A handle to a process. This handle must have been previously passed to the SymInitialize function.

Address [in]

The address for which a symbol should be located. The address does not have to be on a symbol boundary. If the address comes after the beginning of a symbol and before the end of the symbol, the symbol is found.

Displacement [out, optional]

The displacement from the beginning of the symbol, or zero.

Symbol [in, out]

A pointer to a SYMBOL_INFO structure that provides information about the symbol. The symbol name is variable in length; therefore this buffer must be large enough to hold the name stored at the end of the SYMBOL_INFO structure. Be sure to set the MaxNameLen member to the number of bytes reserved for the name.

Return value

If the function succeeds, the return value is TRUE.

If the function fails, the return value is FALSE. To retrieve extended error information, call GetLastError.

Remarks

All DbgHelp functions, such as this one, are single threaded. Therefore, calls from more than one thread to this function will likely result in unexpected behavior or memory corruption. To avoid this, you must synchronize all concurrent calls from more than one thread to this function.

To call the Unicode version of this function, define DBGHELP_TRANSLATE_TCHAR.

Examples

For an example, see Retrieving Symbol Information by Address.

Requirements

Redistributable

DbgHelp.dll 5.1 or later

Header

Dbghelp.h

Library

Dbghelp.lib

DLL

Dbghelp.dll

Unicode and ANSI names

SymFromAddrW (Unicode) and SymFromAddr (ANSI)

See also

DbgHelp Functions
SYMBOL_INFO

 

 

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