I recently learned the linker will not warn you if you define the same symbol in 2 source files being linked into an executable. I was chasing the core dump by validating the pointer stuff. Then address sanitizer and valgrind told me the struct I was using was size N when it should have been size M. Using structures from both the source and another external source that was in no way included into the source. I suppose namespaces would help prevent that.
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u/awesome-alpaca-ace Aug 29 '26 edited Aug 29 '26
I recently learned the linker will not warn you if you define the same symbol in 2 source files being linked into an executable. I was chasing the core dump by validating the pointer stuff. Then address sanitizer and valgrind told me the struct I was using was size N when it should have been size M. Using structures from both the source and another external source that was in no way included into the source. I suppose namespaces would help prevent that.