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Backport some fixes from libbacktrace upstream repo.

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This commit is contained in:
Bartosz Taudul 2020-05-30 14:23:29 +02:00
parent 71102e3c6d
commit ff27656533
2 changed files with 8 additions and 1 deletions
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3
libbacktrace/elf.cpp
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@ -2789,6 +2789,9 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor,
backtrace_release_view (state, &shdr_view, error_callback, data);
}
if (shnum == 0 || shstrndx == 0)
goto fail;
/* To translate PC to file/line when using DWARF, we need to find
the .debug_info and .debug_line sections. */

6
libbacktrace/posix.cpp
View File

@ -70,7 +70,11 @@ backtrace_open (const char *filename, backtrace_error_callback error_callback,
descriptor = open (filename, (int) (O_RDONLY | O_BINARY | O_CLOEXEC));
if (descriptor < 0)
{
if (does_not_exist != NULL && errno == ENOENT)
/* If DOES_NOT_EXIST is not NULL, then don't call ERROR_CALLBACK
if the file does not exist. We treat lacking permission to
open the file as the file not existing; this case arises when
running the libgo syscall package tests as root. */
if (does_not_exist != NULL && (errno == ENOENT || errno == EACCES))
*does_not_exist = 1;
else
error_callback (data, filename, errno);