SymGetLineFromAddr function

Locates the source line for the specified address.

Syntax

BOOL IMAGEAPI SymGetLineFromAddr(
  HANDLE         hProcess,
  DWORD          dwAddr,
  PDWORD         pdwDisplacement,
  PIMAGEHLP_LINE Line
);

Parameters

hProcess

A handle to the process that was originally passed to the SymInitialize function.

dwAddr

TBD

pdwDisplacement

The displacement in bytes from the beginning of the line, or zero.

Line

TBD

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

The caller must allocate the Line buffer properly and fill in the required members of the IMAGEHLP_LINE64 structure before calling SymGetLineFromAddr64.

This function returns a pointer to a buffer that may be reused by another function. Therefore, be sure to copy the data returned to another buffer immediately.

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. SymGetLineFromAddrW64 is defined as follows in Dbghelp.h.

C++
BOOL
IMAGEAPI
SymGetLineFromAddrW64(
    _In_ HANDLE hProcess,
    _In_ DWORD64 dwAddr,
    _Out_ PDWORD pdwDisplacement,
    _Out_ PIMAGEHLP_LINEW64 Line
    );

#ifdef DBGHELP_TRANSLATE_TCHAR #define SymGetLineFromAddr64 SymGetLineFromAddrW64 #endif

This function supersedes the SymGetLineFromAddr function. For more information, see Updated Platform Support. SymGetLineFromAddr is defined as follows in Dbghelp.h.
C++
#if !defined(_IMAGEHLP_SOURCE_) && defined(_IMAGEHLP64)
#define SymGetLineFromAddr SymGetLineFromAddr64
#define SymGetLineFromAddrW SymGetLineFromAddrW64
#else
BOOL
IMAGEAPI
SymGetLineFromAddr(
    _In_ HANDLE hProcess,
    _In_ DWORD dwAddr,
    _Out_ PDWORD pdwDisplacement,
    _Out_ PIMAGEHLP_LINE Line
    );

BOOL IMAGEAPI SymGetLineFromAddrW( In HANDLE hProcess, In DWORD dwAddr, Out PDWORD pdwDisplacement, Out PIMAGEHLP_LINEW Line ); #endif

Examples

For an example, see Retrieving Symbol Information by Address.

Requirements

   
Target Platform Windows
Header dbghelp.h
Library Dbghelp.lib
DLL Dbghelp.dll

See Also

DbgHelp Functions

IMAGEHLP_LINE64

SymGetLineFromName64

SymInitialize