Use CORE_ADDR_MAX in various "breaks" arrays

Code like this:

  CORE_ADDR breaks[2] = {-1, -1};

... gives a warning with -Wnarrowing.  This patch changes all
instances of this to use CORE_ADDR_MAX instead.

gdb/ChangeLog
2018-08-27  Tom Tromey  <tom@tromey.com>

	* rs6000-tdep.c (ppc_deal_with_atomic_sequence): Use
	CORE_ADDR_MAX.
	* mips-tdep.c (mips_deal_with_atomic_sequence)
	(micromips_deal_with_atomic_sequence): Use CORE_ADDR_MAX.
	* arch/arm-get-next-pcs.c (thumb_deal_with_atomic_sequence_raw)
	(arm_deal_with_atomic_sequence_raw): Use CORE_ADDR_MAX.
	* alpha-tdep.c (alpha_deal_with_atomic_sequence): Use
	CORE_ADDR_MAX.
	* aarch64-tdep.c (aarch64_software_single_step): Use
	CORE_ADDR_MAX.

6 files changed, 20 insertions, 7 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 52bfeb6..1d16861 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,18 @@
 2018-08-27  Tom Tromey  <tom@tromey.com>
 
+	* rs6000-tdep.c (ppc_deal_with_atomic_sequence): Use
+	CORE_ADDR_MAX.
+	* mips-tdep.c (mips_deal_with_atomic_sequence)
+	(micromips_deal_with_atomic_sequence): Use CORE_ADDR_MAX.
+	* arch/arm-get-next-pcs.c (thumb_deal_with_atomic_sequence_raw)
+	(arm_deal_with_atomic_sequence_raw): Use CORE_ADDR_MAX.
+	* alpha-tdep.c (alpha_deal_with_atomic_sequence): Use
+	CORE_ADDR_MAX.
+	* aarch64-tdep.c (aarch64_software_single_step): Use
+	CORE_ADDR_MAX.
+
+2018-08-27  Tom Tromey  <tom@tromey.com>
+
 	* linespec.c (complete_linespec_component): Add cast to "char".
 	* completer.c (completion_tracker::build_completion_result): Add
 	cast to "char".
diff --git a/gdb/aarch64-tdep.c b/gdb/aarch64-tdep.c
index 5c6eb98..62f680e 100644
--- a/gdb/aarch64-tdep.c
+++ b/gdb/aarch64-tdep.c
@@ -2472,7 +2472,7 @@ aarch64_software_single_step (struct regcache *regcache)
   const int insn_size = 4;
   const int atomic_sequence_length = 16; /* Instruction sequence length.  */
   CORE_ADDR pc = regcache_read_pc (regcache);
-  CORE_ADDR breaks[2] = { -1, -1 };
+  CORE_ADDR breaks[2] = { CORE_ADDR_MAX, CORE_ADDR_MAX };
   CORE_ADDR loc = pc;
   CORE_ADDR closing_insn = 0;
   uint32_t insn = read_memory_unsigned_integer (loc, insn_size,
diff --git a/gdb/alpha-tdep.c b/gdb/alpha-tdep.c
index 53943e1..e649bd2 100644
--- a/gdb/alpha-tdep.c
+++ b/gdb/alpha-tdep.c
@@ -767,7 +767,7 @@ static const int stq_c_opcode = 0x2f;
 static std::vector<CORE_ADDR>
 alpha_deal_with_atomic_sequence (struct gdbarch *gdbarch, CORE_ADDR pc)
 {
-  CORE_ADDR breaks[2] = {-1, -1};
+  CORE_ADDR breaks[2] = {CORE_ADDR_MAX, CORE_ADDR_MAX};
   CORE_ADDR loc = pc;
   CORE_ADDR closing_insn; /* Instruction that closes the atomic sequence.  */
   unsigned int insn = alpha_read_insn (gdbarch, loc);
diff --git a/gdb/arch/arm-get-next-pcs.c b/gdb/arch/arm-get-next-pcs.c
index 1e63267..3178bf3 100644
--- a/gdb/arch/arm-get-next-pcs.c
+++ b/gdb/arch/arm-get-next-pcs.c
@@ -49,7 +49,7 @@ static std::vector<CORE_ADDR>
 thumb_deal_with_atomic_sequence_raw (struct arm_get_next_pcs *self)
 {
   int byte_order_for_code = self->byte_order_for_code;
-  CORE_ADDR breaks[2] = {-1, -1};
+  CORE_ADDR breaks[2] = {CORE_ADDR_MAX, CORE_ADDR_MAX};
   CORE_ADDR pc = regcache_read_pc (self->regcache);
   CORE_ADDR loc = pc;
   unsigned short insn1, insn2;
@@ -187,7 +187,7 @@ static std::vector<CORE_ADDR>
 arm_deal_with_atomic_sequence_raw (struct arm_get_next_pcs *self)
 {
   int byte_order_for_code = self->byte_order_for_code;
-  CORE_ADDR breaks[2] = {-1, -1};
+  CORE_ADDR breaks[2] = {CORE_ADDR_MAX, CORE_ADDR_MAX};
   CORE_ADDR pc = regcache_read_pc (self->regcache);
   CORE_ADDR loc = pc;
   unsigned int insn;
diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index 37a12a9..5e0a606 100644
--- a/gdb/mips-tdep.c
+++ b/gdb/mips-tdep.c
@@ -3910,7 +3910,7 @@ mips_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr)
 static std::vector<CORE_ADDR>
 mips_deal_with_atomic_sequence (struct gdbarch *gdbarch, CORE_ADDR pc)
 {
-  CORE_ADDR breaks[2] = {-1, -1};
+  CORE_ADDR breaks[2] = {CORE_ADDR_MAX, CORE_ADDR_MAX};
   CORE_ADDR loc = pc;
   CORE_ADDR branch_bp; /* Breakpoint at branch instruction's destination.  */
   ULONGEST insn;
@@ -4013,7 +4013,7 @@ micromips_deal_with_atomic_sequence (struct gdbarch *gdbarch,
 {
   const int atomic_sequence_length = 16; /* Instruction sequence length.  */
   int last_breakpoint = 0; /* Defaults to 0 (no breakpoints placed).  */
-  CORE_ADDR breaks[2] = {-1, -1};
+  CORE_ADDR breaks[2] = {CORE_ADDR_MAX, CORE_ADDR_MAX};
   CORE_ADDR branch_bp = 0; /* Breakpoint at branch instruction's
 			      destination.  */
   CORE_ADDR loc = pc;
diff --git a/gdb/rs6000-tdep.c b/gdb/rs6000-tdep.c
index e78de49..5a3e65f 100644
--- a/gdb/rs6000-tdep.c
+++ b/gdb/rs6000-tdep.c
@@ -989,7 +989,7 @@ ppc_deal_with_atomic_sequence (struct regcache *regcache)
   struct gdbarch *gdbarch = regcache->arch ();
   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
   CORE_ADDR pc = regcache_read_pc (regcache);
-  CORE_ADDR breaks[2] = {-1, -1};
+  CORE_ADDR breaks[2] = {CORE_ADDR_MAX, CORE_ADDR_MAX};
   CORE_ADDR loc = pc;
   CORE_ADDR closing_insn; /* Instruction that closes the atomic sequence.  */
   int insn = read_memory_integer (loc, PPC_INSN_SIZE, byte_order);