https://bugs.llvm.org/show_bug.cgi?id=44169
Bug ID: 44169
Summary: Wrong return type in std::strchr
Product: clang
Version: 9.0
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: unassignedclangb...@nondot.org
Reporter: b...@bertptrs.nl
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk
Created attachment 22876
--> https://bugs.llvm.org/attachment.cgi?id=22876&action=edit
Minimal example showcasing the bug
According to the standard, the return type of std::strchr should be of the same
constness as the input string. This means that if you provide a char*, you
should get a char*, and if you provide a const char*, you should get a const
char* back.
It seems that Clang 9 (using libstdc++ 6.0.27 as the standard library
implementation) returns a char* regardless of input constness.
Attached is a simple program that reproduces the issue. It compiles when using
GCC (version 9.2) but doesn't in Clang.
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