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[gdb/build] Fix build with gcc 4.8.5

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When building with gcc 4.8.5, I run into:
...
user-regs.c:85:1: error: could not convert \
  ‘{0l, (& builtin_user_regs.gdb_user_regs::first)}’ from \
  ‘<brace-enclosed initializer list>’ to ‘gdb_user_regs’
 };
 ^
...

Fix this by removing the initialization and handling regs.last == nullptr in
append_user_reg.

Tested on x86_64-linux.
This commit is contained in:
Tom de Vries
2022-08-07 16:03:00 +02:00
parent c7cd10637c
commit 411c7e044f
1 changed files with 3 additions and 3 deletions
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6
gdb/user-regs.c
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@@ -74,15 +74,15 @@ append_user_reg (struct gdb_user_regs *regs, const char *name,
reg->xread = xread; reg->xread = xread;
reg->baton = baton; reg->baton = baton;
reg->next = NULL; reg->next = NULL;
if (regs->last == nullptr)
regs->last = &regs->first;
(*regs->last) = reg; (*regs->last) = reg;
regs->last = &(*regs->last)->next; regs->last = &(*regs->last)->next;
} }
/* An array of the builtin user registers. */ /* An array of the builtin user registers. */
static struct gdb_user_regs builtin_user_regs = { static struct gdb_user_regs builtin_user_regs;
NULL, &builtin_user_regs.first
};
void void
user_reg_add_builtin (const char *name, user_reg_read_ftype *xread, user_reg_add_builtin (const char *name, user_reg_read_ftype *xread,