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Change gcc_target_options to return std::string

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This patch was inspired by a recent review that recommended using
std::string in a new implementation of the gcc_target_options gdbarch
function.  It changes this function to return std::string rather than
an ordinary xmalloc'd string.

I believe this caught a latent memory leak in compile.c:get_args.

Tested on x86-64 Fedora 29.

gdb/ChangeLog
2019-10-15  Tom Tromey  <tromey@adacore.com>

	* gdbarch.h, gdbarch.c: Rebuild.
	* gdbarch.sh (gcc_target_options): Change return type to
	std::string.
	* compile/compile.c (get_args): Update.
	* nios2-tdep.c (nios2_gcc_target_options): Return std::string.
	* arm-linux-tdep.c (arm_linux_gcc_target_options): Return
	std::string.
	* aarch64-linux-tdep.c (aarch64_linux_gcc_target_options): Return
	std::string.
	* arch-utils.c (default_gcc_target_options): Return std::string.
	* arch-utils.h (default_gcc_target_options): Return std::string.
	* s390-tdep.c (s390_gcc_target_options): Return std::string.

Change-Id: I51f61703426a323089e646da8f22320a2cafbc1f
This commit is contained in:
Tom Tromey
2019-10-15 10:57:40 -06:00
parent 81e6b8eb20
commit 953cff5630
11 changed files with 35 additions and 19 deletions
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7
gdb/arch-utils.c
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@@ -903,11 +903,12 @@ default_infcall_munmap (CORE_ADDR addr, CORE_ADDR size)
/* -mcmodel=large is used so that no GOT (Global Offset Table) is needed to be
created in inferior memory by GDB (normally it is set by ld.so). */
char *
std::string
default_gcc_target_options (struct gdbarch *gdbarch)
{
return xstrprintf ("-m%d%s", gdbarch_ptr_bit (gdbarch),
gdbarch_ptr_bit (gdbarch) == 64 ? " -mcmodel=large" : "");
return string_printf ("-m%d%s", gdbarch_ptr_bit (gdbarch),
(gdbarch_ptr_bit (gdbarch) == 64
? " -mcmodel=large" : ""));
}
/* gdbarch gnu_triplet_regexp method. */