http://llvm.org/bugs/show_bug.cgi?id=9510
Summary: Warning for ctype.h misuse
Product: clang
Version: trunk
Platform: PC
OS/Version: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Static Analyzer
AssignedTo: [email protected]
ReportedBy: [email protected]
CC: [email protected]
One of the most often misused APIs in C is ctype.h. A lot of programmers don't
understand the value range of the functions and the following code fragments
are seen over and over again:
char c;
isalpha(c);
isalpha((int)c); // Attempt to pacify the compiler warning on some systems
Correct usage is:
isalpha((unsigned char)c)
if EOF can be ruled out. Above is valid only if a check for ASCII was done
before (e.g. with isascii).
--
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.
_______________________________________________
LLVMbugs mailing list
[email protected]
http://lists.cs.uiuc.edu/mailman/listinfo/llvmbugs
