Tcl Source Code: View Ticket

Ticket UUID:	66aa81c90ac680085da28a45aeb3861103634b07
Title:	MS-Windows+TCL9: if a load failes due to a missing secondary DLL, the error message says "No error".
Type:	Bug	Version:	9.0.0
Submitter:	oehhar	Created on:	2024-11-11 10:11:47
Subsystem:	17. Commands I-L	Assigned To:	nobody
Priority:	5 Medium	Severity:	Minor
Status:	Open	Last Modified:	2024-12-02 14:56:02
Resolution:	None	Closed By:	nobody
		Closed on:
Description:	Hi TCL team, I try to port tclwmf by MrAndrowish to TCL9. The resulting tclwmf.dll depends on jpeglib.dll. If this secondary dll is not in the path, the error message is: % package require tclwmf couldn't load library "C:/.../tclwmf0.1/tcl9tclwmf01.dll": No error The same with TCL 8.6.14 gives: % package require tclwmf couldn't load library "C:/.../tclwmf0.1/tclwmf01t.dll": this library or a dependent library could not be found in library path So, the error message is now "No error" what is less helpful. Thanks for all, Harald
User Comments:	dkf added on 2024-12-02 14:56:02: Looks like this SO question's answer might be relevant. I'm not sure if it will be perfect, but it at least stands a chance of giving some debugging info to users where there was previously none... (Damnable internal APIs!) jan.nijtmans added on 2024-11-28 13:46:56: In my case, it was Win64 compiled with gcc. tcl9memorymoduletest.dll depends on libgcc_s_seh-1.dll, which was not present. Something is going on oehhar added on 2024-11-28 13:24:28: Jan, thanks for looking into this. The issue arises only, if the library "test.dll" loaded by "load test.dll" is present, but "test.dll" requires another dll and this dll is not present. This is on Windows 64, compiled with MS-VS 2015 32 bit. THank you, Harald jan.nijtmans added on 2024-11-28 12:33:34: >tclsh90 % load ./tcl9memorymoduletest.dll couldn't load library "./tcl9memorymoduletest.dll": this library or a dependent library could not be found in library path Just stumbled on this. Comparing tclWinLoad.c from 9.0 with 8.6, I don't see any fundamental changes. ????