------- Comment #6 from sparky at pld-linux dot org 2008-09-29 21:36 ------- I was trying to isolate the code which triggers this bug, but seems like the code must be very complex to do so. Nevertheless I found exactly how the resulting assembler code is broken. Note: files gsignal.s and gsignal.s-non-inline are switched.
In file .s file with inlining, at line 15045 there's the conditional jump corresponding to `if (!accumulator)' from original code, but the actual comparison of the value and zero is nowhere near to be found. 15041 mr 7,31 15042 bl [EMAIL PROTECTED] 15043 .LBB1531: 15044 .LBB1532: 15045 .loc 1 2282 0 15046 beq- 3,.L1255 <--- missing: cmpwi 3,9,0 15047 .LVL1697: 15048 .LBE1532: 15049 .loc 1 2285 0 15050 lwz 9,116(1) It looks like gcc thinks the comparison at line 14364 is enough. The code does not do anything with cr3 along the path, but several external functions are called, which AFAIR are allowed to change the value of cr3. 14360 .loc 1 2333 0 14361 lwz 9,28(22) 14362 .LVL1636: 14363 .loc 1 2334 0 14364 cmpwi 3,9,0 14365 .loc 1 2333 0 14366 stw 9,116(1) 14367 .LVL1637: 14368 .loc 1 2334 0 14369 beq- 3,.L1414 I was playing with newer glib2, so I'm not really sure about this file, but in my case adding appropriate cmpwi 3,<reg>,0 instruction was enough to fix the code. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37154
