https://llvm.org/bugs/show_bug.cgi?id=30631
Bug ID: 30631
Summary: Clang shows multiple unreachable code warnings when
one warning is sufficient
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: arpha...@gmail.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Typically, when clang is given the '-Wunreachable-code' option, it would show a
minimal number of warnings when it encounters unreachable statements.
However, clang shows multiple warnings for unreachable code that's mixed
together with statements like 'return'. For example, clang will show two
unreachable warnings when the code below is compiled with '-Wunreachable-code':
int foo() {
return 0;
}
int bar(int x) {
if (x == 0)
return x + 1;
else
return x;
foo(); // warning will be shown here
return 0;
foo(); // and another warning will be shown here
}
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