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2019-12-01build: Disable Visual Studio warning "conditional expression is constant"Jay Satiro
- Disable warning C4127 "conditional expression is constant" globally in curl_setup.h for when building with Microsoft's compiler. This mainly affects building with the Visual Studio project files found in the projects dir. Prior to this change the cmake and winbuild build systems already disabled 4127 globally for when building with Microsoft's compiler. Also, 4127 was already disabled for all build systems in the limited circumstance of the WHILE_FALSE macro which disabled the warning specifically for while(0). This commit removes the WHILE_FALSE macro and all other cruft in favor of disabling globally in curl_setup. Background: We have various macros that cause 0 or 1 to be evaluated, which would cause warning C4127 in Visual Studio. For example this causes it: #define Curl_resolver_asynch() 1 Full behavior is not clearly defined and inconsistent across versions. However it is documented that since VS 2015 Update 3 Microsoft has addressed this somewhat but not entirely, not warning on while(true) for example. Prior to this change some C4127 warnings occurred when I built with Visual Studio using the generated projects in the projects dir. Closes https://github.com/curl/curl/pull/4658
2019-11-28curl_setup_once: consistently use WHILE_FALSE in macrosDaniel Gustafsson
The WHILE_FALSE construction is used to avoid compiler warnings in macro constructions. This fixes a few instances where it was not used in order to keep the code consistent. Closes #4649 Reviewed-by: Daniel Stenberg <daniel@haxx.se>
2019-11-28checksrc: fix regexp for ASSIGNWITHINCONDITIONDaniel Gustafsson
The regexp looking for assignments within conditions was too greedy and matched a too long string in the case of multiple conditionals on the same line. This is basically only a problem in single line macros, and the code which exemplified this was essentially: do { if((x) != NULL) { x = NULL; } } while(0) ..where the final parenthesis of while(0) matched the regexp, and the legal assignment in the block triggered the warning. Fix by making the regexp less greedy by matching for the tell-tale signs of the if statement ending. Also remove the one occurrence where the warning was disabled due to a construction like the above, where the warning didn't apply when fixed. Closes #4647 Reviewed-by: Daniel Stenberg <daniel@haxx.se>
2019-11-17lib: Move lib/ssh.h -> lib/vssh/ssh.hJay Satiro
Follow-up to 5b2d703 which moved ssh source files to vssh. Closes https://github.com/curl/curl/pull/4609
2019-10-01lib: silence conversion warningsMarcel Raad
Closes https://github.com/curl/curl/pull/4444
2019-09-23libssh: part of conditional expression is always true: !resultDaniel Stenberg
PVS-Studio warning Fixed #4402
2019-09-23libssh: part of conditional expression is always trueDaniel Stenberg
PVS-Studio warning Fixes #4402
2019-09-23libssh: The expression is excessive or contains a misprintDaniel Stenberg
PVS-Studio warning Fixes #4402
2019-09-20libssh2: part of conditional expression is always true: !resultDaniel Stenberg
Fixes warning detected by PVS-Studio Fixes #4374
2019-08-17ssh: add a generic Curl_ssh_version function for SSH backendsDaniel Stenberg
Closes #4235
2019-08-17vssh: move ssh init/cleanup functions into backend codeDaniel Stenberg
2019-08-17vssh: create directory for SSH backend codeDaniel Stenberg