To be used in place of symt_find_nearest(). symt_find_symbol_at() ensures that the address passed is within the boundaries of the returned symbol (while find_nearest() doesn't).
This fixes erroneous backtraces in debugger like:
``` $ ./wine winedbg notepad WineDbg starting on pid 0104 RtlDefaultNpAcl () at Z:\home\eric\work\wine\dlls\ntdll\sec.c:1731 0x00000170054805 ntdll+0x54805 [Z:\home\eric\work\wine\dlls\ntdll\sec.c:1731]: ret 1731 } Wine-dbg>bt Backtrace: =>0 0x00000170054805 RtlDefaultNpAcl+0x2d5(pAcl=<internal error>) [Z:\home\eric\work\wine\dlls\ntdll\sec.c:1731] in ntdll (0x000001700701a4) 1 0x0000017002d6c4 __wine_pop_frame(pAcl=<internal error>) [Z:\home\eric\work\wine\include\wine\exception.h:273] in ntdll (0x000001700701a4) 2 0x0000017002d6c4 process_breakpoint+0x84() [Z:\home\eric\work\wine\dlls\ntdll\loader.c:3912] in ntdll (0x000001700701a4) 3 0x000001700354c9 LdrInitializeThunk+0x509(context=<register R13 not accessible in this frame>, unknown2=<internal error>, unknown3=<internal error>, unknown4=<internal error>) [Z:\home\eric\work\wine\dlls\ntdll\loader.c:4200] in ntdll (0x000001700701a4) ```
where RtlDefaultNpAcl() has nothing to do here (it's the symbol below RIP and we don't have a symbol with debug information for that address).
Signed-off-by: Eric Pouech eric.pouech@gmail.com
-- v2: dlls/dbghelp: introduce symt_find_symbol_at()