https://llvm.org/bugs/show_bug.cgi?id=23487
Bug ID: 23487
Summary: Custom assert function is not registered as 'noreturn'
Product: clang
Version: 3.5
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Static Analyzer
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 14312
--> https://llvm.org/bugs/attachment.cgi?id=14312&action=edit
scan-build gcc -c clang-test-3.c finds a bug with this code.
I have a custom assert function that checks a value, prints some information,
and calls abort. (it does not call assert).
I believe this is due to a function using a variable argument list. If I mark
the variable argument function __attribute__((__noreturn__)) then the 'assert'
is correctly identified. If I mark the abort function (called by the variable
argument function) with __attribute__((__noreturn__)) then the 'assert' is not
identified, and clang finds a bug with NULL pointer dereference.
I expect: scan-build to find no NULL pointer dereference
I get: scan-build does not recognise the abort(), and finds a NULL pointer
dereference.
I am on Ubuntu clang-3.5
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