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Fix build failure for 32-bit targets
When building master GDB, I ran into the following: binutils-gdb/gdb/bt-utils.c: In function 'int libbacktrace_print(void*, uintptr_t, const char*, int, const char*)': binutils-gdb/gdb/bt-utils.c:93:44: error: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'uintptr_t {aka unsigned int}' [-Werror=format=] snprintf (buf, sizeof (buf), "0x%lx ", pc); Fix this by using %PRIxPTR as opposed to %lx.
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@ -90,7 +90,7 @@ libbacktrace_print (void *data, uintptr_t pc, const char *filename,
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files. We are also careful to ensure we don't overflow this buffer. */
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char buf[20];
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snprintf (buf, sizeof (buf), "0x%lx ", pc);
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snprintf (buf, sizeof (buf), "0x%" PRIxPTR " ", pc);
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buf[sizeof (buf) - 1] = '\0';
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sig_write (buf);
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sig_write (function == nullptr ? "???" : function);
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