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Fix C level backtrace info on macOS clang 16

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macOS clang 16 generates DWARF5, which have Mach-O section names that
are limited to 16 characters, which causes sections with long names to
be truncated and not match above.

See: https://wiki.dwarfstd.org/Best_Practices.md#Mach-2d-O
This commit is contained in:
Peter Zhu 2024-11-27 10:24:47 -05:00
parent 3354324c6e
commit 0af2eafc59
Notes: git 2024-11-27 17:12:52 +00:00
1 changed files with 11 additions and 1 deletions
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12
addr2line.c
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@ -2426,7 +2426,17 @@ found_mach_header:
for (int j=0; j < DWARF_SECTION_COUNT; j++) { for (int j=0; j < DWARF_SECTION_COUNT; j++) {
struct dwarf_section *s = obj_dwarf_section_at(obj, j); struct dwarf_section *s = obj_dwarf_section_at(obj, j);
if (strcmp(sect->sectname, debug_section_names[j]) != 0) if (strcmp(sect->sectname, debug_section_names[j]) != 0
#ifdef __APPLE__
/* macOS clang 16 generates DWARF5, which have Mach-O
* section names that are limited to 16 characters,
* which causes sections with long names to be truncated
* and not match above.
* See: https://wiki.dwarfstd.org/Best_Practices.md#Mach-2d-O
*/
&& strncmp(sect->sectname, debug_section_names[j], 16) != 0
#endif
)
continue; continue;
s->ptr = file + sect->offset; s->ptr = file + sect->offset;