[Qemu-devel] [PATCH] libvixl: Fix wrong format strings

[Qemu-devel] [PATCH] libvixl: Fix wrong format strings

[Stefan Weil]

When the compiler is told to check the arguments of AppendToOutput,
it reports several errors of this kind:

error: format ‘%d’ expects argument of type ‘int’,
 but argument 3 has type ‘int64_t {aka long int}’ [-Werror=format]

Fix those bugs by using the correct format strings with PRId64, PRIx64.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
---

Hello Peter,

if you want to fix the format strings before upstream updates the code,
you can use this patch.

It fails with checkpatch.pl, but that's normal in this case.

Regards
Stefan

 disas/libvixl/a64/disasm-a64.cc |   20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/disas/libvixl/a64/disasm-a64.cc b/disas/libvixl/a64/disasm-a64.cc
index aa133a9..f81ce4b 100644
--- a/disas/libvixl/a64/disasm-a64.cc
+++ b/disas/libvixl/a64/disasm-a64.cc
@@ -1369,7 +1369,7 @@ int Disassembler::SubstituteImmediateField(Instruction* instr,
         VIXL_ASSERT(format[5] == 'L');
         AppendToOutput("#0x%" PRIx64, instr->ImmMoveWide());
         if (instr->ShiftMoveWide() > 0) {
-          AppendToOutput(", lsl #%d", 16 * instr->ShiftMoveWide());
+          AppendToOutput(", lsl #%" PRId64, 16 * instr->ShiftMoveWide());
         }
       }
       return 8;
@@ -1418,7 +1418,7 @@ int Disassembler::SubstituteImmediateField(Instruction* instr,
     }
     case 'F': {  // IFPSingle, IFPDouble or IFPFBits.
       if (format[3] == 'F') {  // IFPFbits.
-        AppendToOutput("#%d", 64 - instr->FPScale());
+        AppendToOutput("#%" PRId64, 64 - instr->FPScale());
         return 8;
       } else {
         AppendToOutput("#0x%" PRIx64 " (%.4f)", instr->ImmFP(),
@@ -1439,23 +1439,23 @@ int Disassembler::SubstituteImmediateField(Instruction* instr,
       return 5;
     }
     case 'P': {  // IP - Conditional compare.
-      AppendToOutput("#%d", instr->ImmCondCmp());
+      AppendToOutput("#%" PRId64, instr->ImmCondCmp());
       return 2;
     }
     case 'B': {  // Bitfields.
       return SubstituteBitfieldImmediateField(instr, format);
     }
     case 'E': {  // IExtract.
-      AppendToOutput("#%d", instr->ImmS());
+      AppendToOutput("#%" PRId64, instr->ImmS());
       return 8;
     }
     case 'S': {  // IS - Test and branch bit.
-      AppendToOutput("#%d", (instr->ImmTestBranchBit5() << 5) |
-                            instr->ImmTestBranchBit40());
+      AppendToOutput("#%" PRId64, (instr->ImmTestBranchBit5() << 5) |
+                                  instr->ImmTestBranchBit40());
       return 2;
     }
     case 'D': {  // IDebug - HLT and BRK instructions.
-      AppendToOutput("#0x%x", instr->ImmException());
+      AppendToOutput("#0x%" PRIx64, instr->ImmException());
       return 6;
     }
     default: {
@@ -1626,12 +1626,12 @@ int Disassembler::SubstituteExtendField(Instruction* instr,
       (((instr->ExtendMode() == UXTW) && (instr->SixtyFourBits() == 0)) ||
        (instr->ExtendMode() == UXTX))) {
     if (instr->ImmExtendShift() > 0) {
-      AppendToOutput(", lsl #%d", instr->ImmExtendShift());
+      AppendToOutput(", lsl #%" PRId64, instr->ImmExtendShift());
     }
   } else {
     AppendToOutput(", %s", extend_mode[instr->ExtendMode()]);
     if (instr->ImmExtendShift() > 0) {
-      AppendToOutput(" #%d", instr->ImmExtendShift());
+      AppendToOutput(" #%" PRId64, instr->ImmExtendShift());
     }
   }
   return 3;
@@ -1660,7 +1660,7 @@ int Disassembler::SubstituteLSRegOffsetField(Instruction* instr,
   if (!((ext == UXTX) && (shift == 0))) {
     AppendToOutput(", %s", extend_mode[ext]);
     if (shift != 0) {
-      AppendToOutput(" #%d", instr->SizeLS());
+      AppendToOutput(" #%" PRId64, instr->SizeLS());
     }
   }
   return 9;
-- 
1.7.10.4

Re: [Qemu-devel] [PATCH] libvixl: Fix wrong format strings

[Stefan Weil]

Am 18.06.2014 19:49, schrieb Stefan Weil:
> When the compiler is told to check the arguments of AppendToOutput,
> it reports several errors of this kind:
> 
> error: format ‘%d’ expects argument of type ‘int’,
>  but argument 3 has type ‘int64_t {aka long int}’ [-Werror=format]
> 
> Fix those bugs by using the correct format strings with PRId64, PRIx64.
> 
> Signed-off-by: Stefan Weil <sw@weilnetz.de>
> ---
> 
> Hello Peter,
> 
> if you want to fix the format strings before upstream updates the code,
> you can use this patch.
> 
> It fails with checkpatch.pl, but that's normal in this case.
> 
> Regards
> Stefan
> 

Ping?

Peter, I suggest that you apply this patch directly as it is a bug fix,
and I don't expect that anybody will send a pull request.

Stefan