libbacktrace: correctly gather Mach-O symbol table
For PR libbacktrace/97082. * macho.c (MACH_O_N_EXT): Don't define. (MACH_O_N_UNDF): Define. (macho_defined_symbol): Don't discard N_EXT symbols. Do discard N_UNDF symbols.
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1 changed files with 9 additions and 7 deletions
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@ -271,12 +271,14 @@ struct macho_nlist_64
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/* Value found in nlist n_type field. */
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#define MACH_O_N_EXT 0x01 /* Extern symbol */
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#define MACH_O_N_ABS 0x02 /* Absolute symbol */
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#define MACH_O_N_SECT 0x0e /* Defined in section */
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#define MACH_O_N_TYPE 0x0e /* Mask for type bits */
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#define MACH_O_N_STAB 0xe0 /* Stabs debugging symbol */
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#define MACH_O_N_TYPE 0x0e /* Mask for type bits */
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/* Values found after masking with MACH_O_N_TYPE. */
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#define MACH_O_N_UNDF 0x00 /* Undefined symbol */
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#define MACH_O_N_ABS 0x02 /* Absolute symbol */
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#define MACH_O_N_SECT 0x0e /* Defined in section from n_sect field */
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/* Information we keep for a Mach-O symbol. */
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@ -492,10 +494,10 @@ macho_defined_symbol (uint8_t type)
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{
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if ((type & MACH_O_N_STAB) != 0)
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return 0;
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if ((type & MACH_O_N_EXT) != 0)
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return 0;
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switch (type & MACH_O_N_TYPE)
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{
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case MACH_O_N_UNDF:
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return 0;
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case MACH_O_N_ABS:
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return 1;
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case MACH_O_N_SECT:
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