https://bugs.llvm.org/show_bug.cgi?id=43624
Bug ID: 43624
Summary: strlen calls on non-const char[] not folded
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C
Assignee: unassignedclangb...@nondot.org
Reporter: ndesaulni...@google.com
CC: blitzrak...@gmail.com, dgre...@apple.com,
erik.pilking...@gmail.com, llvm-bugs@lists.llvm.org,
richard-l...@metafoo.co.uk, srhi...@google.com
#include <stdio.h>
#include <string.h>
void f(const char *s){
char foo [] = "hello\n";
printf("%lu\n", strlen(foo));
foo[0] = '\0';
printf("%lu\n", strlen(foo));
}
https://godbolt.org/z/T1m9UM
Looks like GCC nicely determines the strlen at compile time. Seems nice to
have.
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