http://llvm.org/bugs/show_bug.cgi?id=16679
Bug ID: 16679
Summary: Report unrecognized arguments before reporting
argument incompatibility
Product: new-bugs
Version: trunk
Hardware: PC
OS: MacOS X
Status: NEW
Severity: normal
Priority: P
Component: new bugs
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
What steps will reproduce the problem?
1. touch ~/Desktop/empty.cpp
2. $HOME/llvm/build/Release+Asserts/bin/clang++ -fsanitize=undefined
-fnosanitize=vptr -fno-rtti ~/Desktop/empty.cpp
What is the expected output? What do you see instead?
Expected:
clang: warning: argument unused during compilation: '-fnosanitize=vptr'
clang: error: invalid argument '-fsanitize=vptr' not allowed with '-fno-rtti'
What I got:
Only the error. As a result, I didn't realize I had left out a hyphen in the
no-sanitize argument, and thought something was broken.
What version of the product are you using? On what operating system?
LLVM r186884 on Mac OS X 10.8.x
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