[EXT_EP-10144] Including cmath causes remark: zero used for undefined preprocessing identifier "__STDC_VERSION__" Created: 23/Nov/20 Updated: 27/May/21 Resolved: 28/Dec/20 |
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| Status: | Fixed |
| Project: | Embedded Software & Tools |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Bug | Priority: | Medium |
| Reporter: | TI User | Assignee: | TI User |
| Resolution: | Fixed | Votes: | 0 |
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Product: | Code Generation Tools |
| Internal ID: | CODEGEN-8389 |
| Found In Release: | C6000_8.3.0 MSP430_20.2.0.LTS ARM_18.12.0.LTS C2000_20.12.0.STS C7000_2.0.0.STS* ARM_20.2.0.LTS C2000_20.2.0.LTS C7000_1.4.0.LTS MSP430_20.12.0.STS MSP430_18.12.0.LTS C2000_18.12.0.LTS |
| Fix In Release: | ARM_20.2.5.LTS MSP430_21.6.0.LTS C2000_21.6.0.LTS C7000_2.0.0.STS* C7000_1.4.2.LTS MSP430_18.12.8.LTS C2000_20.2.5.LTS C2000_18.12.8.LTS ARM_18.12.8.LTS MSP430_20.2.5.LTS C6000_8.3.9 |
| Affected Platform/Device: | default |
| Workaround: | Change header file lines identified in warning to begin with check that __STDC_VERSION__ is defined prior to checking its value:
#if defined(_STDC_VERSION__) && __STDC_VERSION__ >= ... |
| Description |
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Given a simple C++ source file with lines similar to ... #include <cmath> int a; Build it with remarks enabled ... % armcl --issue_remarks file.cpp "C:\ti\compilers\ti-cgt-arm_18.12.4.LTS\include\math.h", line 96: remark: zero used for undefined preprocessing identifier "__STDC_VERSION__" "C:\ti\compilers\ti-cgt-arm_18.12.4.LTS\include\math.h", line 110: remark: zero used for undefined preprocessing identifier "__STDC_VERSION__" Those lines in math.h fail to anticipate that the code may be compiled as C++, and the predefined symbol _STDC_VERSION_ is not available. They need to rewritten similar to this line in tgmath.h ... #if (defined(_STDC_VERSION) && __STDC_VERSION_ >= 201112L)
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