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libbacktrace: don't crash if ELF file has no sections

Patch from Roland McGrath.

Fixes #41
lib
Ian Lance Taylor 2 years ago
parent
commit
7206f5bd06
  1. 3
      elf.c

3
elf.c

@ -2781,6 +2781,9 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor, @@ -2781,6 +2781,9 @@ 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. */

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