llvm-project/clang/test/Analysis/conversion-tracking-notes.c
Aaron Ballman 0dd49a5628 Use functions with prototypes when appropriate; NFC
A significant number of our tests in C accidentally use functions
without prototypes. This patch converts the function signatures to have
a prototype for the situations where the test is not specific to K&R C
declarations. e.g.,

  void func();

becomes

  void func(void);

This is the eighth batch of tests being updated (there are a
significant number of other tests left to be updated).
2022-02-12 07:25:06 -05:00

27 lines
1.0 KiB
C

// RUN: %clang_analyze_cc1 %s \
// RUN: -Wno-conversion -Wno-tautological-constant-compare \
// RUN: -analyzer-checker=core,apiModeling,alpha.core.Conversion \
// RUN: -analyzer-output=text \
// RUN: -verify
unsigned char U8;
signed char S8;
void track_assign(void) {
unsigned long L = 1000; // expected-note {{'L' initialized to 1000}}
int I = -1; // expected-note {{'I' initialized to -1}}
U8 *= L; // expected-warning {{Loss of precision in implicit conversion}}
// expected-note@-1 {{Loss of precision in implicit conversion}}
L *= I; // expected-warning {{Loss of sign in implicit conversion}}
// expected-note@-1 {{Loss of sign in implicit conversion}}
}
void track_relational(unsigned U, signed S) {
if (S < -10) { // expected-note {{Taking true branch}}
// expected-note@-1 {{Assuming the condition is true}}
if (U < S) { // expected-warning {{Loss of sign in implicit conversion}}
// expected-note@-1 {{Loss of sign in implicit conversion}}
}
}
}