gcc/testsuite/gcc.dg/assign-warn-1.c

   1 /* Test diagnostics for bad implicit type conversions.  */
   2 /* Origin: Joseph Myers <jsm@polyomino.org.uk> */
   3 /* { dg-do compile } */
   4 /* { dg-options "-pedantic -ftrack-macro-expansion=0" } */
   5
   6 #define TESTARG(ID, TL, TR) void ID##F(TL); void ID##F2(TR x) { ID##F(x); } extern int dummy
   7 #define TESTARP(ID, TL, TR) struct { void (*x)(TL); } ID##Fp; void ID##F2(TR x) { ID##Fp.x(x); } extern int dummy
   8 #define TESTASS(ID, TL, TR) void ID##F(TR x) { TL y; y = x; } extern int dummy
   9 #define TESTINI(ID, TL, TR) void ID##F(TR x) { TL y = x; } extern int dummy
  10 #define TESTRET(ID, TL, TR) TR ID##V; TL ID##F(void) { return ID##V; } extern int dummy
  11
  12 typedef void (*fp)(void);
  13 typedef void (*nrfp)(void) __attribute__((noreturn));
  14
  15 TESTARG(fqa, nrfp, fp); /* { dg-warning "passing argument 1 of 'fqaF' makes '__attribute__..noreturn..' qualified function pointer from unqualified" } */
  16 TESTARP(fqb, nrfp, fp); /* { dg-warning "passing argument 1 of 'fqbFp.x' makes '__attribute__..noreturn..' qualified function pointer from unqualified" } */
  17 TESTASS(fqc, nrfp, fp); /* { dg-warning "assignment makes '__attribute__..noreturn..' qualified function pointer from unqualified" } */
  18 TESTINI(fqd, nrfp, fp); /* { dg-warning "initialization makes '__attribute__..noreturn..' qualified function pointer from unqualified" } */
  19 TESTRET(fqe, nrfp, fp); /* { dg-warning "return makes '__attribute__..noreturn..' qualified function pointer from unqualified" } */
  20
  21 TESTARG(ofqa, fp, nrfp);
  22 TESTARP(ofqb, fp, nrfp);
  23 TESTASS(ofqc, fp, nrfp);
  24 TESTINI(ofqd, fp, nrfp);
  25 TESTRET(ofqe, fp, nrfp);
  26
  27 TESTARG(qa, char *, const char *); /* { dg-warning "passing argument 1 of 'qaF' discards 'const' qualifier from pointer target type" } */
  28 TESTARP(qb, char *, const char *); /* { dg-warning "passing argument 1 of 'qbFp.x' discards 'const' qualifier from pointer target type" } */
  29 TESTASS(qc, char *, const char *); /* { dg-warning "assignment discards 'const' qualifier from pointer target type" } */
  30 TESTINI(qd, char *, const char *); /* { dg-warning "initialization discards 'const' qualifier from pointer target type" } */
  31 TESTRET(qe, char *, const char *); /* { dg-warning "return discards 'const' qualifier from pointer target type" } */
  32
  33 TESTARG(oqa, const char *, char *);
  34 TESTARP(oqb, const char *, char *);
  35 TESTASS(oqc, const char *, char *);
  36 TESTINI(oqd, const char *, char *);
  37 TESTRET(oqe, const char *, char *);
  38
  39 TESTARG(fda, fp, void *); /* { dg-warning "ISO C forbids passing argument 1 of 'fdaF' between function pointer and 'void \\*'" } */
  40 TESTARP(fdb, fp, void *); /* { dg-warning "ISO C forbids passing argument 1 of 'fdbFp.x' between function pointer and 'void \\*'" } */
  41 TESTASS(fdc, fp, void *); /* { dg-warning "ISO C forbids assignment between function pointer and 'void \\*'" } */
  42 TESTINI(fdd, fp, void *); /* { dg-warning "ISO C forbids initialization between function pointer and 'void \\*'" } */
  43 TESTRET(fde, fp, void *); /* { dg-warning "ISO C forbids return between function pointer and 'void \\*'" } */
  44
  45 TESTARG(dfa, void *, fp); /* { dg-warning "ISO C forbids passing argument 1 of 'dfaF' between function pointer and 'void \\*'" } */
  46 TESTARP(dfb, void *, fp); /* { dg-warning "ISO C forbids passing argument 1 of 'dfbFp.x' between function pointer and 'void \\*'" } */
  47 TESTASS(dfc, void *, fp); /* { dg-warning "ISO C forbids assignment between function pointer and 'void \\*'" } */
  48 TESTINI(dfd, void *, fp); /* { dg-warning "ISO C forbids initialization between function pointer and 'void \\*'" } */
  49 TESTRET(dfe, void *, fp); /* { dg-warning "ISO C forbids return between function pointer and 'void \\*'" } */
  50
  51 TESTARG(sua, int *, unsigned int *); /* { dg-warning "pointer targets in passing argument 1 of 'suaF' differ in signedness" } */
  52 TESTARP(sub, int *, unsigned int *); /* { dg-warning "pointer targets in passing argument 1 of 'subFp.x' differ in signedness" } */
  53 TESTASS(suc, int *, unsigned int *); /* { dg-warning "pointer targets in assignment from 'unsigned int \\*' to 'int \\*' differ in signedness" } */
  54 TESTINI(sud, int *, unsigned int *); /* { dg-warning "pointer targets in initialization of 'int \\*' from 'unsigned int \\*' differ in signedness" } */
  55 TESTRET(sue, int *, unsigned int *); /* { dg-warning "pointer targets in returning 'unsigned int \\*' from a function with return type 'int \\*' differ in signedness" } */
  56
  57 TESTARG(usa, unsigned int *, int *); /* { dg-warning "pointer targets in passing argument 1 of 'usaF' differ in signedness" } */
  58 TESTARP(usb, unsigned int *, int *); /* { dg-warning "pointer targets in passing argument 1 of 'usbFp.x' differ in signedness" } */
  59 TESTASS(usc, unsigned int *, int *); /* { dg-warning "pointer targets in assignment from 'int \\*' to 'unsigned int \\*' differ in signedness" } */
  60 TESTINI(usd, unsigned int *, int *); /* { dg-warning "pointer targets in initialization of 'unsigned int \\*' from 'int \\*' differ in signedness" } */
  61 TESTRET(use, unsigned int *, int *); /* { dg-warning "pointer targets in returning 'int \\*' from a function with return type 'unsigned int \\*' differ in signedness" } */
  62
  63 TESTARG(cua, char *, unsigned char *); /* { dg-warning "pointer targets in passing argument 1 of 'cuaF' differ in signedness" } */
  64 TESTARP(cub, char *, unsigned char *); /* { dg-warning "pointer targets in passing argument 1 of 'cubFp.x' differ in signedness" } */
  65 TESTASS(cuc, char *, unsigned char *); /* { dg-warning "pointer targets in assignment from 'unsigned char \\*' to 'char \\*' differ in signedness" } */
  66 TESTINI(cud, char *, unsigned char *); /* { dg-warning "pointer targets in initialization of 'char \\*' from 'unsigned char \\*' differ in signedness" } */
  67 TESTRET(cue, char *, unsigned char *); /* { dg-warning "pointer targets in returning 'unsigned char \\*' from a function with return type 'char \\*' differ in signedness" } */
  68
  69 TESTARG(uca, unsigned char *, char *); /* { dg-warning "pointer targets in passing argument 1 of 'ucaF' differ in signedness" } */
  70 TESTARP(ucb, unsigned char *, char *); /* { dg-warning "pointer targets in passing argument 1 of 'ucbFp.x' differ in signedness" } */
  71 TESTASS(ucc, unsigned char *, char *); /* { dg-warning "pointer targets in assignment from 'char \\*' to 'unsigned char \\*' differ in signedness" } */
  72 TESTINI(ucd, unsigned char *, char *); /* { dg-warning "pointer targets in initialization of 'unsigned char \\*' from 'char \\*' differ in signedness" } */
  73 TESTRET(uce, unsigned char *, char *); /* { dg-warning "pointer targets in returning 'char \\*' from a function with return type 'unsigned char \\*' differ in signedness" } */
  74
  75 TESTARG(csa, char *, signed char *); /* { dg-warning "pointer targets in passing argument 1 of 'csaF' differ in signedness" } */
  76 TESTARP(csb, char *, signed char *); /* { dg-warning "pointer targets in passing argument 1 of 'csbFp.x' differ in signedness" } */
  77 TESTASS(csc, char *, signed char *); /* { dg-warning "pointer targets in assignment from 'signed char \\*' to 'char \\*' differ in signedness" } */
  78 TESTINI(csd, char *, signed char *); /* { dg-warning "pointer targets in initialization of 'char \\*' from 'signed char \\*' differ in signedness" } */
  79 TESTRET(cse, char *, signed char *); /* { dg-warning "pointer targets in returning 'signed char \\*' from a function with return type 'char \\*' differ in signedness" } */
  80
  81 TESTARG(sca, signed char *, char *); /* { dg-warning "pointer targets in passing argument 1 of 'scaF' differ in signedness" } */
  82 TESTARP(scb, signed char *, char *); /* { dg-warning "pointer targets in passing argument 1 of 'scbFp.x' differ in signedness" } */
  83 TESTASS(scc, signed char *, char *); /* { dg-warning "pointer targets in assignment from 'char \\*' to 'signed char \\*' differ in signedness" } */
  84 TESTINI(scd, signed char *, char *); /* { dg-warning "pointer targets in initialization of 'signed char \\*' from 'char \\*' differ in signedness" } */
  85 TESTRET(sce, signed char *, char *); /* { dg-warning "pointer targets in returning 'char \\*' from a function with return type 'signed char \\*' differ in signedness" } */
  86
  87 TESTARG(cia, char *, int *); /* { dg-warning "passing argument 1 of 'ciaF' from incompatible pointer type" } */
  88 TESTARP(cib, char *, int *); /* { dg-warning "passing argument 1 of 'cibFp.x' from incompatible pointer type" } */
  89 TESTASS(cic, char *, int *); /* { dg-warning "assignment to 'char \\*' from incompatible pointer type 'int \\*'" } */
  90 TESTINI(cid, char *, int *); /* { dg-warning "initialization of 'char \\*' from incompatible pointer type 'int \\*'" } */
  91 TESTRET(cie, char *, int *); /* { dg-warning "returning 'int \\*' from a function with incompatible return type 'char \\*'" } */
  92
  93 TESTARG(ica, int *, char *); /* { dg-warning "passing argument 1 of 'icaF' from incompatible pointer type" } */
  94 TESTARP(icb, int *, char *); /* { dg-warning "passing argument 1 of 'icbFp.x' from incompatible pointer type" } */
  95 TESTASS(icc, int *, char *); /* { dg-warning "assignment to 'int \\*' from incompatible pointer type 'char \\*'" } */
  96 TESTINI(icd, int *, char *); /* { dg-warning "initialization of 'int \\*' from incompatible pointer type 'char \\*'" } */
  97 TESTRET(ice, int *, char *); /* { dg-warning "returning 'char \\*' from a function with incompatible return type 'int \\*'" } */
  98
  99 TESTARG(ciia, char *, int); /* { dg-warning "passing argument 1 of 'ciiaF' makes pointer from integer without a cast" } */
 100 TESTARP(ciib, char *, int); /* { dg-warning "passing argument 1 of 'ciibFp.x' makes pointer from integer without a cast" } */
 101 TESTASS(ciic, char *, int); /* { dg-warning "assignment to 'char \\*' from 'int' makes pointer from integer without a cast" } */
 102 TESTINI(ciid, char *, int); /* { dg-warning "initialization of 'char \\*' from 'int' makes pointer from integer without a cast" } */
 103 TESTRET(ciie, char *, int); /* { dg-warning "returning 'int' from a function with return type 'char \\*' makes pointer from integer without a cast" } */
 104
 105 TESTARG(iica, int, char *); /* { dg-warning "passing argument 1 of 'iicaF' makes integer from pointer without a cast" } */
 106 TESTARP(iicb, int, char *); /* { dg-warning "passing argument 1 of 'iicbFp.x' makes integer from pointer without a cast" } */
 107 TESTASS(iicc, int, char *); /* { dg-warning "assignment to 'int' from 'char \\*' makes integer from pointer without a cast" } */
 108 TESTINI(iicd, int, char *); /* { dg-warning "initialization of 'int' from 'char \\*' makes integer from pointer without a cast" } */
 109 TESTRET(iice, int, char *); /* { dg-warning "returning 'char \\*' from a function with return type 'int' makes integer from pointer without a cast" } */
 110
 111 struct s { int a; };
 112
 113 TESTARG(stria, struct s, int); /* { dg-error "incompatible type for argument 1 of 'striaF'" } */
 114 TESTARP(strib, struct s, int); /* { dg-error "incompatible type for argument 1 of 'stribFp.x'" } */
 115 TESTASS(stric, struct s, int); /* { dg-error "incompatible types when assigning to type 'struct s' from type 'int'" } */
 116 TESTINI(strid, struct s, int); /* { dg-error "invalid initializer" } */
 117 TESTRET(strie, struct s, int); /* { dg-error "incompatible types when returning type 'int' but 'struct s' was expected" } */
 118
 119 TESTARG(istra, int, struct s); /* { dg-error "incompatible type for argument 1 of 'istraF'" } */
 120
 121 TESTARP(istrb, int, struct s); /* { dg-error "incompatible type for argument 1 of 'istrbFp.x'" } */
 122
 123 TESTASS(istrc, int, struct s); /* { dg-error "incompatible types when assigning to type 'int' from type 'struct s'" } */
 124 TESTINI(istrd, int, struct s); /* { dg-error "incompatible types when initializing type 'int' using type 'struct s'" } */
 125 TESTRET(istre, int, struct s); /* { dg-error "incompatible types when returning type 'struct s' but 'int' was expected" } */
 126
 127 /* Match all extra informative notes.  */
 128 /* { dg-message "note: expected '\[^\n'\]*' but argument is of type '\[^\n'\]*'" "note: expected" { target *-*-* } 0 } */