gdb debugging oddity

Question

When using gdb for debugging some code,it sometimes repeats some code fragments several times while using next command, after this repeat, with the n command, it continues sequentially over program lines normally. What is the reason of this strange behaviour? Or anyone had this problem before? What could be the fix for this? I have GNU gdb (GDB) 7.2-ubuntu.

A log showing this behavior would be nice, cannot reproduce... — Fredrik Pihl
– Fredrik Pihl, Commented Jun 8, 2011 at 20:41
not clear what you want from me but most of the time this happens when I try to step into templates, and optimization could be another source... — Umut Tabak
– Umut Tabak, Commented Jun 8, 2011 at 20:45

Diego Sevilla · Accepted Answer · 2011-06-08 20:43:20Z

4

Program may have been compiled using optimizations. Try again with -O0 when compiling.

answered Jun 8, 2011 at 20:43

Diego Sevilla

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Umut Tabak Over a year ago

+1 is that the only reason, I mean to turn on optimisation flags

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